United States · Santa Clara Completed: Apr 22, 2026 22:22 UTCMobile 375 × 812
Desktop 1440 × 900
Score: 73 / 100
Based on 8 categories, 0 sections
Decent speed, but optimizing further could improve engagement.
Several missing protections leave your users and data exposed.
Several issues make your site difficult for assistive technology users.
Well-optimized for search — your content is discoverable.
Solid infrastructure — fast server responses across the board.
Mostly compliant — a few items need attention.
Missing metadata means poor previews on social media and search.
Reasonable footprint with room for optimization.
The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.
Weights reflect general web best practices. Individual needs may differ.
Content-Security-Policy header is missing
Security gaps expose your site and users to attacks, eroding trust.
HSTS header is missing
Security gaps expose your site and users to attacks, eroding trust.
No Content-Security-Policy header found
Security gaps expose your site and users to attacks, eroding trust.
1 link(s) with no accessible text
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
No <main> landmark found
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
High impact, low effort — start here.
High impact, requires investment.
Small gains, minimal effort.
Nothing in this quadrant — good news.
Low impact, high effort — do last.
Nothing in this quadrant — good news.
[](https://beavercheck.com/results/edb8e0c5-596c-49da-a80e-4ce359ece91f)<a href="https://beavercheck.com/results/edb8e0c5-596c-49da-a80e-4ce359ece91f"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Ftcpdf.org" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Ftcpdf.orgThis badge auto-updates with your latest scan result.
Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. The 3 security gaps leave your users exposed — modern browsers increasingly warn visitors about insecure sites. Addressing the critical issues below would have the most immediate impact on your user trust.
9 barrier(s) likely increasing bounce by ~30%.
Page takes 5.5s to load
+12% bounceUsers abandon at ~3s — you're 3.0s over the 2.5s threshold
Fix: Optimize render-blocking resources, preload the hero image, and compress images
Page feels frozen for 930ms
+5% bounceClicks on the primary CTA are ignored while JavaScript runs
Fix: Break up long tasks; defer non-critical JavaScript to post-hydration
No HSTS header
+1% bounceReturning visitors are briefly exposed to downgrade attacks on first request
Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains
No Content-Security-Policy header
+1% bounceHigher XSS blast radius — one compromised script can exfiltrate the checkout form
Fix: Ship a reporting-only CSP first, then enforce once violations are clean
No Open Graph tags
+2% bounceLinks shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop
Fix: Add og:title, og:description, og:image, og:url to the page head
No structured data
+2% bounceNo rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices
Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)
Content is hard to read
+2% bounceGraduate-level reading difficulty — limits the addressable audience for product or blog pages
Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60
No skip-to-content link
+1% bounceKeyboard and screen-reader users must tab through the entire header on every page
Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element
1 broken link(s) on the page
+2% bounceClicks land on 404s — trust drops and the session often ends
Fix: Fix or remove the broken destinations surfaced on the Content tab
Preliminary CRO audit — each barrier links to the tab with detailed analysis.
€405 investment → €3,408/month returns + EUR 120,500,000 risk avoided
€405
4h · 5 findings
€3,408 /mo
~€40,895 / year
EUR 120,500,000
if kept compliant
€135 — in quick wins — start here for the fastest payback
Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.
4.5 developer hours at €90/hr
Based on Germany rates (€90/hr)
Start here for the best return on investment
€10,041,667 / month at risk
~€120,500,005 / year if left unfixed
€120,500,000
+8 more
€0.41 /mo
5523.3 MB/mo × 0.074 EUR/GB
Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.
Unique monthly visitors from your analytics
Purchases, signups, or key actions
Optional — for revenue estimation
more engaged visitors from reduced bounce
Fix 5 critical issues to capture this value
Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.
Your site's LCP: → estimated after fixes.
These are estimates based on industry research — actual results vary
Your data stays in your browser — nothing is sent to our servers
Thanks for your feedback!
We'll use a cached audit if available, or offer to scan.
Industry-standard audits powered by Google Lighthouse.
Key metrics that affect user experience.
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
4.53 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.53 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
930 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.009
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.53 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
9.84 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Performance issues directly impact user engagement and conversion rates.
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.
Source: Google web.dev / Lighthouse
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
Performance issues directly impact user engagement and conversion rates.
A long cache lifetime can speed up repeat visits to your page. Learn more about caching.
Performance issues directly impact user engagement and conversion rates.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| tcpdf.org/fonts/fa-solid-900.woff2 | 0.0 ms | 110.7 KiB |
| tcpdf.org/fonts/fa-brands-400.woff2 | 0.0 ms | 99.0 KiB |
| tcpdf.org/css/combined.css | 0.0 ms | 21.5 KiB |
| /pagead/managed/js/adsense/m202604170101/show_ads_impl_fy... | 1209600.0 s | 177.5 KiB |
| tcpdf.org/js/combined.js | 0.0 ms | 10.6 KiB |
| cse.google.com/cse.js?cx=partner-pub-2627887748647914%3a4304874910 | 0.0 ms | 3.5 KiB |
| tcpdf.org/img/tcpdf_main_logo_150x30.png | 0.0 ms | 2.6 KiB |
| www.google.com/cse/static/style/look/v6/default.css | 3000.0 s | 1.2 KiB |
| /qoGBmLK-lHvVMjwHEzv8uytTsZ3i0TMQa7UEgGl7HFc1K4T3em7xxaGZ... | 86400.0 s | 789 B |
| pagead2.googlesyndication.com/pagead/osd.js?fcd=true | 3600.0 s | 76 B |
Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.
Performance issues directly impact user engagement and conversion rates.
A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.
Performance issues directly impact user engagement and conversion rates.
Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
Performance issues directly impact user engagement and conversion rates.
Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| tcpdf.org/css/combined.css | 21.5 KiB | 600 ms |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.
Performance issues directly impact user engagement and conversion rates.
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.
Performance issues directly impact user engagement and conversion rates.
Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.css | 9.7 KiB | 2.8 KiB |
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| tcpdf.org/css/combined.css | 21.4 KiB | 20.5 KiB |
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.
Source: Google web.dev / Lighthouse
| URL | Transfer Size | Est Savings |
|---|---|---|
| /pagead/managed/js/adsense/m202604170101/show_ads_impl_fy... | 177.5 KiB | 105.6 KiB |
| /cse/static/element/b33cba5881f68fbf/cse_element__en.js?u... | 98.5 KiB | 48.8 KiB |
| /i/ca-pub-2627887748647914?href=https%3A%2F%2Ftcpdf.org&e... | 68.7 KiB | 33.5 KiB |
| cse.google.com/adsense/search/async-ads.js | 43.3 KiB | 33.4 KiB |
| /pagead/js/adsbygoogle.js?client=ca-pub-2627887748647914 | 54.2 KiB | 20.0 KiB |
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.
Performance issues directly impact user engagement and conversion rates.
| URL | Total CPU Time | Script Evaluation | Script Parse |
|---|---|---|---|
| /pagead/managed/js/adsense/m202604170101/show_ads_impl_fy... | 1.5 s | 703 ms | 72 ms |
| /i/ca-pub-2627887748647914?href=https%3A%2F%2Ftcpdf.org&e... | 393 ms | 351 ms | 34 ms |
| tcpdf.org/ | 382 ms | 8.8 ms | 1.3 ms |
| Unattributable | 343 ms | 14 ms | 0.0 ms |
| /pagead/js/adsbygoogle.js?client=ca-pub-2627887748647914 | 327 ms | 168 ms | 19 ms |
| /cse/static/element/b33cba5881f68fbf/cse_element__en.js?u... | 260 ms | 141 ms | 53 ms |
| /f/AGSKWxU5oXf8ZjeW5IhlenaaaYnewQbvIDsQQmUs9JeprsaC-zjqul... | 227 ms | 159 ms | 7.6 ms |
| /f/AGSKWxXSRFNZ9PtmKUGkiFyvkILY0Bm_QTESFTS730AOgx4d_2lS17... | 111 ms | 88 ms | 2.1 ms |
| /_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads... | 87 ms | 12 ms | 0.0 ms |
| ep2.adtrafficquality.google/sodar/sodar2.js | 74 ms | 66 ms | 2.7 ms |
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 1.8 s |
| Style & Layout | 1.1 s |
| Other | 700 ms |
| Script Parsing & Compilation | 211 ms |
| Rendering | 135 ms |
| Parse HTML & CSS | 113 ms |
More information about the performance of your application. These numbers don't directly affect the Performance score.
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Open Source PHP class for generating PDF documents div#layout > div#main > div.header > h2 |
tc-lib-pdf is the new generation of TCPDF for modern PHP. Generate production P… div#layout > div#main > div.content > p |
tc-lib-pdf div#main > div.content > p > strong |
TCPDF started in 2002 and became one of the most widely adopted PDF engines in … div#layout > div#main > div.content > p |
tc-lib-pdf div#main > div.content > p > code |
Install: div#main > div.content > ul > li |
GitHub: https://github.com/tecnickcom/tc-lib-pdf div#main > div.content > ul > li |
https://github.com/tecnickcom/tc-lib-pdf div.content > ul > li > a |
API docs: /docs/srcdoc/tc-lib-pdf div#main > div.content > ul > li |
/docs/srcdoc/tc-lib-pdf div.content > ul > li > a |
Examples: /examples/ div#main > div.content > ul > li |
/examples/ div.content > ul > li > a |
Packagist: https://packagist.org/packages/tecnickcom/tc-lib-pdf div#main > div.content > ul > li |
https://packagist.org/packages/tecnickcom/tc-lib-pdf div.content > ul > li > a |
tc-lib-pdf is a deterministic, pure-PHP PDF toolkit with no external rendering … div#layout > div#main > div.content > p |
tc-lib-pdf div#main > div.content > p > code |
Modern baseline: PHP 8.1+, Composer-first, modular dependencies. div#main > div.content > ul > li |
Modern baseline: div.content > ul > li > strong |
Production features: advanced typography, graphics, security, standards, and fo… div#main > div.content > ul > li |
Production features: div.content > ul > li > strong |
Predictable output: deterministic generation suitable for invoices, reports, la… div#main > div.content > ul > li |
Predictable output: div.content > ul > li > strong |
Flexible adoption: use the full stack or install only the tc-lib packages your … div#main > div.content > ul > li |
Flexible adoption: div.content > ul > li > strong |
The legacy TCPDF repository is deprecated: div#layout > div#main > div.content > p |
Legacy library: https://github.com/tecnickcom/TCPDF div#main > div.content > ul > li |
https://github.com/tecnickcom/TCPDF div.content > ul > li > a |
New library: https://github.com/tecnickcom/tc-lib-pdf div#main > div.content > ul > li |
https://github.com/tecnickcom/tc-lib-pdf ul > li > strong > a |
Recommendation: div#main > div.content > p > strong |
Starting a new project: use tc-lib-pdf. div#main > div.content > ul > li |
tc-lib-pdf div.content > ul > li > strong |
Running legacy TCPDF in production: keep it stable short-term and plan phased m… div#main > div.content > ul > li |
Migration matters because tc-lib-pdf is where active evolution continues. div#layout > div#main > div.content > p |
PHP 8.1+ div#main > div.content > ul > li |
Composer div#main > div.content > ul > li |
Optional extensions: gd, zlib div#main > div.content > ul > li |
gd div.content > ul > li > code |
zlib div.content > ul > li > code |
'/../vendor/tecnickcom/tc-lib-pdf-font/target/fonts' code.language-php > span > span > span |
'helvetica' code.language-php > span > span > span |
12 code.language-php > span > span > span |
Invoices, receipts, and financial statements div#main > div.content > ul > li |
Shipping labels and barcode-driven logistics documents div#main > div.content > ul > li |
Compliance and archival PDFs (including PDF/A workflows) div#main > div.content > ul > li |
Branded reports with custom fonts, SVG, and advanced layout controls div#main > div.content > ul > li |
Interactive documents with forms, annotations, and signatures div#main > div.content > ul > li |
Full UTF-8 Unicode and right-to-left language support div#main > div.content > ul > li |
TrueTypeUnicode, OpenTypeUnicode v1, TrueType, OpenType v1, Type1, and CID-0 fo… div#main > div.content > ul > li |
Font subsetting for smaller files div#main > div.content > ul > li |
TeX-style language-aware hyphenation, optional zero-width breakpoints, and trac… div#main > div.content > ul > li |
Text rendering modes: fill, stroke, and clipping div#main > div.content > ul > li |
Automatic line breaks, page breaks, and justified text div#main > div.content > ul > li |
Standard and custom page sizes, margins, and measurement units div#main > div.content > ul > li |
HTML and CSS rendering div#main > div.content > ul > li |
SVG rendering div#main > div.content > ul > li |
Multi-column layouts and no-write page regions div#main > div.content > ul > li |
Headers, footers, reusable page content, bookmarks, named destinations, and tab… div#main > div.content > ul > li |
Automatic page numbering, page groups, page box control, and page reordering div#main > div.content > ul > li |
Native JPEG, PNG, and SVG support div#main > div.content > ul > li |
Extended image support through optional GD formats div#main > div.content > ul > li |
Geometric drawing and 2D transformations div#main > div.content > ul > li |
Linear/radial and mesh gradients, crop marks, and registration bars div#main > div.content > ul > li |
ICC profiles, grayscale/RGB/CMYK/spot colors, transparency, and overprint contr… div#main > div.content > ul > li |
Password and certificate-based encryption (RC4 and AES up to 256-bit) div#main > div.content > ul > li |
Digital signatures: detached CMS (PKCS#7) signatures with configurable appearan… div#main > div.content > ul > li |
RFC 3161 TSA timestamps embedded in CMS signatures with configurable digest, po… div#main > div.content > ul > li |
LTV (Long-Term Validation) embedding in the same PDF revision: /DSS, /VRI, /OCS… div#main > div.content > ul > li |
/DSS div.content > ul > li > code |
/VRI div.content > ul > li > code |
/OCSPs div.content > ul > li > code |
/CRLs div.content > ul > li > code |
/Certs div.content > ul > li > code |
Rich annotations: links, notes, attachments, markup, widgets, and media div#main > div.content > ul > li |
JavaScript embedding div#main > div.content > ul > li |
PDF/A (1/2/3 with a/b/u conformance levels) and PDF/X support div#main > div.content > ul > li |
1D and 2D barcodes through tc-lib-barcode div#main > div.content > ul > li |
tc-lib-barcode div.content > ul > li > code |
Interactive AcroForm fields div#main > div.content > ul > li |
XObject templates and layers with visibility controls div#main > div.content > ul > li |
Multiple output targets: browser display, download, file save, and MIME attachm… div#main > div.content > ul > li |
Factur-X / ZUGFeRD workflows via embedded XML in PDF/A-3 div#main > div.content > ul > li |
tc-lib-pdf is built on a set of focused, independently versioned packages. Each… div#layout > div#main > div.content > p |
tc-lib-pdf div#main > div.content > p > code |
tc-lib-pdf : Top-level PDF generation library; composes the full package stack. div#main > div.content > ul > li |
tc-lib-pdf div.content > ul > li > strong |
tc-lib-barcode : Generates 1D and 2D barcodes (QR, Data Matrix, Code 128, and … div#main > div.content > ul > li |
tc-lib-barcode ul > li > strong > a |
tc-lib-color : Color conversion and management across RGB, CMYK, HSL, and spot… div#main > div.content > ul > li |
tc-lib-color ul > li > strong > a |
tc-lib-file : File and data-URI helpers used internally for asset loading. div#main > div.content > ul > li |
tc-lib-file ul > li > strong > a |
tc-lib-unicode : Unicode string processing: bidirectional text, normalization,… div#main > div.content > ul > li |
tc-lib-unicode ul > li > strong > a |
tc-lib-unicode-data : Raw Unicode character data tables used by tc-lib-unicode. div#main > div.content > ul > li |
tc-lib-unicode-data ul > li > strong > a |
tc-lib-pdf-encrypt : PDF encryption: RC4 and AES (up to 256-bit), permissions,… div#main > div.content > ul > li |
tc-lib-pdf-encrypt ul > li > strong > a |
tc-lib-pdf-filter : PDF stream filters: FlateDecode, ASCII85, LZW, and others. div#main > div.content > ul > li |
tc-lib-pdf-filter ul > li > strong > a |
tc-lib-pdf-font : Font loading, subsetting, and embedding for all supported fo… div#main > div.content > ul > li |
tc-lib-pdf-font ul > li > strong > a |
tc-lib-pdf-graph : Vector graphics primitives: paths, transformations, gradien… div#main > div.content > ul > li |
tc-lib-pdf-graph ul > li > strong > a |
tc-lib-pdf-image : Image loading and embedding: JPEG, PNG, SVG, and GD-backed … div#main > div.content > ul > li |
tc-lib-pdf-image ul > li > strong > a |
tc-lib-pdf-page : Page geometry, margins, boxes, and page-level attributes. div#main > div.content > ul > li |
tc-lib-pdf-page ul > li > strong > a |
tc-lib-pdf-parser : Reads and parses existing PDF files for import or manipula… div#main > div.content > ul > li |
tc-lib-pdf-parser ul > li > strong > a |
Keep legacy TCPDF stable in production while planning migration. div#main > div.content > ol > li |
Start new features on tc-lib-pdf. div#main > div.content > ol > li |
tc-lib-pdf div.content > ol > li > code |
Move legacy document flows incrementally: one template, one module, or one serv… div#main > div.content > ol > li |
Validate outputs with your existing PDF regression checks. div#main > div.content > ol > li |
Read the documentation div#main > div.content > ul > li |
documentation div.content > ul > li > a |
Explore examples div#main > div.content > ul > li |
examples div.content > ul > li > a |
/examples/007_example_signature_basic/ div.content > ul > li > a |
/examples/008_example_signature_timestamp/ div.content > ul > li > a |
/examples/009_example_signature_ltv/ div.content > ul > li > a |
Browse project packages on /projects/ div#main > div.content > ul > li |
/projects/ div.content > ul > li > a |
View source and contribute on GitHub div#main > div.content > ul > li |
GitHub div.content > ul > li > a |
If this project helps your work, please consider supporting development via Pay… div#layout > div#main > div.content > p |
PayPal div#main > div.content > p > a |
© 2004-2026 – Nicola Asuni - Tecnick.com - All rights reserved. body > div#layout > div.footerbar > span.copyright |
Nicola Asuni div#layout > div.footerbar > span.copyright > a |
Tecnick.com div#layout > div.footerbar > span.copyright > a |
about - disclaimer - privacy div#layout > div.footerbar > span.copyright > a |
Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
/projects/ div.content > ul > li > a |
GitHub div.content > ul > li > a |
PayPal div#main > div.content > p > a |
These are opportunities to improve the legibility of your content.
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
body > div#layout > a#menuLink body > div#layout > a#menuLink |
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
These items highlight common accessibility best practices.
Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.
Performance issues directly impact user engagement and conversion rates.
| URL | Displayed size | Actual size | Expected size | |
|---|---|---|---|---|
TCPDF div#layout > div#menu > a.pure-menu-heading > img | tcpdf.org/img/tcpdf_main_logo_150x30.png | 150 x 30 | 150 x 30 | 225 x 45 |
These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.
Industry-standard audits powered by Google Lighthouse. — Desktop
Key metrics that affect user experience. — Desktop
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.98 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.10 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
16 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.006
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.98 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
2.16 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Performance issues directly impact user engagement and conversion rates.
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.
Source: Google web.dev / Lighthouse
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
Performance issues directly impact user engagement and conversion rates.
Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.
Performance issues directly impact user engagement and conversion rates.
A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.
Performance issues directly impact user engagement and conversion rates.
Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
Performance issues directly impact user engagement and conversion rates.
A long cache lifetime can speed up repeat visits to your page. Learn more about caching.
Performance issues directly impact user engagement and conversion rates.
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
Start Here div#layout > div#main > div.content > h2#start-here | /simgad/7569173843847414255/14763004658117789537?w=600&h=... | 54.8 KiB | 24.2 KiB |
Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| tcpdf.org/css/combined.css | 21.5 KiB | 80 ms |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.
Source: Google web.dev / Lighthouse
| URL | Transfer Size | Est Savings |
|---|---|---|
| /pagead/managed/js/adsense/m202604170101/show_ads_impl_fy... | 177.5 KiB | 114.8 KiB |
| /cse/static/element/dc329f57de078f5d/cse_element__en.js?u... | 102.7 KiB | 52.5 KiB |
| /i/ca-pub-2627887748647914?href=https%3A%2F%2Ftcpdf.org&e... | 68.7 KiB | 33.4 KiB |
| cse.google.com/adsense/search/async-ads.js | 43.3 KiB | 33.4 KiB |
| /pagead/js/adsbygoogle.js?client=ca-pub-2627887748647914 | 54.3 KiB | 20.4 KiB |
Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.google.com/cse/static/element/dc329f57de078f5d/default_v6+en.css | 12.0 KiB | 3.3 KiB |
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| tcpdf.org/css/combined.css | 21.4 KiB | 20.5 KiB |
| www.google.com/cse/static/element/dc329f57de078f5d/default_v6+en.css | 11.9 KiB | 11.5 KiB |
More information about the performance of your application. These numbers don't directly affect the Performance score.
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Open Source PHP class for generating PDF documents div#layout > div#main > div.header > h2 |
tc-lib-pdf is the new generation of TCPDF for modern PHP. Generate production P… div#layout > div#main > div.content > p |
tc-lib-pdf div#main > div.content > p > strong |
TCPDF started in 2002 and became one of the most widely adopted PDF engines in … div#layout > div#main > div.content > p |
tc-lib-pdf div#main > div.content > p > code |
Install: div#main > div.content > ul > li |
GitHub: https://github.com/tecnickcom/tc-lib-pdf div#main > div.content > ul > li |
https://github.com/tecnickcom/tc-lib-pdf div.content > ul > li > a |
API docs: /docs/srcdoc/tc-lib-pdf div#main > div.content > ul > li |
/docs/srcdoc/tc-lib-pdf div.content > ul > li > a |
Examples: /examples/ div#main > div.content > ul > li |
/examples/ div.content > ul > li > a |
Packagist: https://packagist.org/packages/tecnickcom/tc-lib-pdf div#main > div.content > ul > li |
https://packagist.org/packages/tecnickcom/tc-lib-pdf div.content > ul > li > a |
tc-lib-pdf is a deterministic, pure-PHP PDF toolkit with no external rendering … div#layout > div#main > div.content > p |
tc-lib-pdf div#main > div.content > p > code |
Modern baseline: PHP 8.1+, Composer-first, modular dependencies. div#main > div.content > ul > li |
Modern baseline: div.content > ul > li > strong |
Production features: advanced typography, graphics, security, standards, and fo… div#main > div.content > ul > li |
Production features: div.content > ul > li > strong |
Predictable output: deterministic generation suitable for invoices, reports, la… div#main > div.content > ul > li |
Predictable output: div.content > ul > li > strong |
Flexible adoption: use the full stack or install only the tc-lib packages your … div#main > div.content > ul > li |
Flexible adoption: div.content > ul > li > strong |
The legacy TCPDF repository is deprecated: div#layout > div#main > div.content > p |
Legacy library: https://github.com/tecnickcom/TCPDF div#main > div.content > ul > li |
https://github.com/tecnickcom/TCPDF div.content > ul > li > a |
New library: https://github.com/tecnickcom/tc-lib-pdf div#main > div.content > ul > li |
https://github.com/tecnickcom/tc-lib-pdf ul > li > strong > a |
Recommendation: div#main > div.content > p > strong |
Starting a new project: use tc-lib-pdf. div#main > div.content > ul > li |
tc-lib-pdf div.content > ul > li > strong |
Running legacy TCPDF in production: keep it stable short-term and plan phased m… div#main > div.content > ul > li |
Migration matters because tc-lib-pdf is where active evolution continues. div#layout > div#main > div.content > p |
PHP 8.1+ div#main > div.content > ul > li |
Composer div#main > div.content > ul > li |
Optional extensions: gd, zlib div#main > div.content > ul > li |
gd div.content > ul > li > code |
zlib div.content > ul > li > code |
Invoices, receipts, and financial statements div#main > div.content > ul > li |
Shipping labels and barcode-driven logistics documents div#main > div.content > ul > li |
Compliance and archival PDFs (including PDF/A workflows) div#main > div.content > ul > li |
Branded reports with custom fonts, SVG, and advanced layout controls div#main > div.content > ul > li |
Interactive documents with forms, annotations, and signatures div#main > div.content > ul > li |
Full UTF-8 Unicode and right-to-left language support div#main > div.content > ul > li |
TrueTypeUnicode, OpenTypeUnicode v1, TrueType, OpenType v1, Type1, and CID-0 fo… div#main > div.content > ul > li |
Font subsetting for smaller files div#main > div.content > ul > li |
TeX-style language-aware hyphenation, optional zero-width breakpoints, and trac… div#main > div.content > ul > li |
Text rendering modes: fill, stroke, and clipping div#main > div.content > ul > li |
Automatic line breaks, page breaks, and justified text div#main > div.content > ul > li |
Standard and custom page sizes, margins, and measurement units div#main > div.content > ul > li |
HTML and CSS rendering div#main > div.content > ul > li |
SVG rendering div#main > div.content > ul > li |
Multi-column layouts and no-write page regions div#main > div.content > ul > li |
Headers, footers, reusable page content, bookmarks, named destinations, and tab… div#main > div.content > ul > li |
Automatic page numbering, page groups, page box control, and page reordering div#main > div.content > ul > li |
Native JPEG, PNG, and SVG support div#main > div.content > ul > li |
Extended image support through optional GD formats div#main > div.content > ul > li |
Geometric drawing and 2D transformations div#main > div.content > ul > li |
Linear/radial and mesh gradients, crop marks, and registration bars div#main > div.content > ul > li |
ICC profiles, grayscale/RGB/CMYK/spot colors, transparency, and overprint contr… div#main > div.content > ul > li |
Password and certificate-based encryption (RC4 and AES up to 256-bit) div#main > div.content > ul > li |
Digital signatures: detached CMS (PKCS#7) signatures with configurable appearan… div#main > div.content > ul > li |
RFC 3161 TSA timestamps embedded in CMS signatures with configurable digest, po… div#main > div.content > ul > li |
LTV (Long-Term Validation) embedding in the same PDF revision: /DSS, /VRI, /OCS… div#main > div.content > ul > li |
/DSS div.content > ul > li > code |
/VRI div.content > ul > li > code |
/OCSPs div.content > ul > li > code |
/CRLs div.content > ul > li > code |
/Certs div.content > ul > li > code |
Rich annotations: links, notes, attachments, markup, widgets, and media div#main > div.content > ul > li |
JavaScript embedding div#main > div.content > ul > li |
PDF/A (1/2/3 with a/b/u conformance levels) and PDF/X support div#main > div.content > ul > li |
1D and 2D barcodes through tc-lib-barcode div#main > div.content > ul > li |
tc-lib-barcode div.content > ul > li > code |
Interactive AcroForm fields div#main > div.content > ul > li |
XObject templates and layers with visibility controls div#main > div.content > ul > li |
Multiple output targets: browser display, download, file save, and MIME attachm… div#main > div.content > ul > li |
Factur-X / ZUGFeRD workflows via embedded XML in PDF/A-3 div#main > div.content > ul > li |
tc-lib-pdf is built on a set of focused, independently versioned packages. Each… div#layout > div#main > div.content > p |
tc-lib-pdf div#main > div.content > p > code |
tc-lib-pdf : Top-level PDF generation library; composes the full package stack. div#main > div.content > ul > li |
tc-lib-pdf div.content > ul > li > strong |
tc-lib-barcode : Generates 1D and 2D barcodes (QR, Data Matrix, Code 128, and … div#main > div.content > ul > li |
tc-lib-barcode ul > li > strong > a |
tc-lib-color : Color conversion and management across RGB, CMYK, HSL, and spot… div#main > div.content > ul > li |
tc-lib-color ul > li > strong > a |
tc-lib-file : File and data-URI helpers used internally for asset loading. div#main > div.content > ul > li |
tc-lib-file ul > li > strong > a |
tc-lib-unicode : Unicode string processing: bidirectional text, normalization,… div#main > div.content > ul > li |
tc-lib-unicode ul > li > strong > a |
tc-lib-unicode-data : Raw Unicode character data tables used by tc-lib-unicode. div#main > div.content > ul > li |
tc-lib-unicode-data ul > li > strong > a |
tc-lib-pdf-encrypt : PDF encryption: RC4 and AES (up to 256-bit), permissions,… div#main > div.content > ul > li |
tc-lib-pdf-encrypt ul > li > strong > a |
tc-lib-pdf-filter : PDF stream filters: FlateDecode, ASCII85, LZW, and others. div#main > div.content > ul > li |
tc-lib-pdf-filter ul > li > strong > a |
tc-lib-pdf-font : Font loading, subsetting, and embedding for all supported fo… div#main > div.content > ul > li |
tc-lib-pdf-font ul > li > strong > a |
tc-lib-pdf-graph : Vector graphics primitives: paths, transformations, gradien… div#main > div.content > ul > li |
tc-lib-pdf-graph ul > li > strong > a |
tc-lib-pdf-image : Image loading and embedding: JPEG, PNG, SVG, and GD-backed … div#main > div.content > ul > li |
tc-lib-pdf-image ul > li > strong > a |
tc-lib-pdf-page : Page geometry, margins, boxes, and page-level attributes. div#main > div.content > ul > li |
tc-lib-pdf-page ul > li > strong > a |
tc-lib-pdf-parser : Reads and parses existing PDF files for import or manipula… div#main > div.content > ul > li |
tc-lib-pdf-parser ul > li > strong > a |
Keep legacy TCPDF stable in production while planning migration. div#main > div.content > ol > li |
Start new features on tc-lib-pdf. div#main > div.content > ol > li |
tc-lib-pdf div.content > ol > li > code |
Move legacy document flows incrementally: one template, one module, or one serv… div#main > div.content > ol > li |
Validate outputs with your existing PDF regression checks. div#main > div.content > ol > li |
Read the documentation div#main > div.content > ul > li |
documentation div.content > ul > li > a |
Explore examples div#main > div.content > ul > li |
examples div.content > ul > li > a |
Try signature examples: /examples/007_example_signature_basic/, /examples/008_e… div#main > div.content > ul > li |
/examples/007_example_signature_basic/ div.content > ul > li > a |
/examples/008_example_signature_timestamp/ div.content > ul > li > a |
/examples/009_example_signature_ltv/ div.content > ul > li > a |
Browse project packages on /projects/ div#main > div.content > ul > li |
/projects/ div.content > ul > li > a |
View source and contribute on GitHub div#main > div.content > ul > li |
GitHub div.content > ul > li > a |
If this project helps your work, please consider supporting development via Pay… div#layout > div#main > div.content > p |
PayPal div#main > div.content > p > a |
© 2004-2026 – Nicola Asuni - Tecnick.com - All rights reserved. body > div#layout > div.footerbar > span.copyright |
Nicola Asuni div#layout > div.footerbar > span.copyright > a |
Tecnick.com div#layout > div.footerbar > span.copyright > a |
about - disclaimer - privacy div#layout > div.footerbar > span.copyright > a |
Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
/projects/ div.content > ul > li > a |
GitHub div.content > ul > li > a |
PayPal div#main > div.content > p > a |
These are opportunities to improve the legibility of your content.
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
These items highlight common accessibility best practices.
These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.
Send Feedback