Lighthouse Mobile
· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.Detailed Report
Audit breakdown by category with detailed findings.
Performance
Insights
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
Performance issues directly impact user engagement and conversion rates.
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.
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.
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 | |
|---|---|---|---|
eReader div.hero_viewport_center > div.landing_animation_wrapper > div.hero_image_no_autoplay > img#last_animated_device | /img/landing_mobile_4.png?v=5e7599e46bd4c2089d37a3e114f7e... | 41.5 KiB | 13.1 KiB |
Android div.hero_viewport_center > div.landing_animation_wrapper > div.hero_image_no_autoplay > img.js_animated_device | /img/landing_mobile_2.png?v=6c40440adf166a2f23e2bd690113e... | 25.4 KiB | 8.0 KiB |
iPhone div.hero_viewport_center > div.landing_animation_wrapper > div.hero_image_no_autoplay > img.js_animated_device | /img/landing_mobile_0.png?v=43b2fbfda039bbfb0c257824278bb... | 22.2 KiB | 7.0 KiB |
Desktop div.hero_viewport_center > div.landing_animation_wrapper > div.hero_image_no_autoplay > img#second_to_last_animated_device | /img/landing_mobile_3.png?v=bf0159603cbc965accd184a337d7e... | 19.7 KiB | 6.2 KiB |
iPad div.hero_viewport_center > div.landing_animation_wrapper > div.hero_image_no_autoplay > img.js_animated_device | /img/landing_mobile_1.png?v=b3e955c41da1fc5767695a5a55835... | 17.4 KiB | 5.5 KiB |
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
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 |
|---|---|---|
| use.typekit.net/any5kzc.js | 6.9 KiB | 151 ms |
| /js/vendor.min.js?v=92c177972ce291dec04ec903f691c3925c982... | 108.7 KiB | 1.9 s |
| /js/main.min.js?v=a949851f0a8ee625a7893857b94481360a89b15... | 68.6 KiB | 1.1 s |
| /css/main.min.css?v=0448d2b3a16473ecb2c6ab8786348384fd9a8... | 56.7 KiB | 2.0 s |
| /css/landing.min.css?v=10f25f976b937ee395e6b38cd972bd6d2a... | 5.3 KiB | 150 ms |
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Performance issues directly impact user engagement and conversion rates.
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
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.
Diagnostics
Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /js/main.min.js?v=a949851f0a8ee625a7893857b94481360a89b15... | 68.3 KiB | 49.0 KiB |
| /js/landing.min.js?v=f6bbaa85bda0e2a6ab47a3609523561d2d19... | 33.4 KiB | 22.1 KiB |
| /js/vendor.min.js?v=92c177972ce291dec04ec903f691c3925c982... | 108.4 KiB | 12.0 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 |
|---|---|---|
| /css/main.min.css?v=0448d2b3a16473ecb2c6ab8786348384fd9a8... | 56.3 KiB | 53.8 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 361.8 KiB | 176.7 KiB |
| /js/vendor.min.js?v=92c177972ce291dec04ec903f691c3925c982... | 108.4 KiB | 83.8 KiB |
| www.googletagmanager.com/gtag/js?id=G-YY0306L5MG | 159.8 KiB | 68.1 KiB |
| /js/main.min.js?v=a949851f0a8ee625a7893857b94481360a89b15... | 68.3 KiB | 21.2 KiB |
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 | 1.4 s |
| Other | 506 ms |
| Script Parsing & Compilation | 286 ms |
| Style & Layout | 256 ms |
| Parse HTML & CSS | 63 ms |
| Rendering | 25 ms |
| Garbage Collection | 24 ms |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
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 |
|---|---|---|---|
| www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 1.0 s | 855 ms | 114 ms |
| Unattributable | 365 ms | 15 ms | 0.0 ms |
| /js/vendor.min.js?v=92c177972ce291dec04ec903f691c3925c982... | 343 ms | 119 ms | 44 ms |
| www.googletagmanager.com/gtag/js?id=G-YY0306L5MG | 334 ms | 268 ms | 60 ms |
| instapaper.com/ | 263 ms | 20 ms | 2.7 ms |
| use.typekit.net/any5kzc.js | 61 ms | 43 ms | 2.6 ms |
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
Read Anywhere main.main > section > div.landing_constrained > img | /img/landing_read_anywhere.png?v=858e349b49587cd54ae0b482... |
Save Anything main.main > section > div.landing_constrained > img | /img/landing_save_anything.png?v=3ca73e242e1aa194612923d0... |
Create Notes main.main > section > div.landing_constrained > img | /img/landing_notes.png?v=ce19d10bcf9beb48f15ffa86a7f175f0... |
More information about the performance of your application. These numbers don't directly affect the Performance score.
Accessibility
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.
Internationalization and localization
If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html.js html.js |
These are opportunities to improve the interpretation of your content by users in different locales.
Contrast
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 |
|---|
iPhone section > div.landing_constrained > p > a |
iPad section > div.landing_constrained > p > a |
Android section > div.landing_constrained > p > a |
Kindle section > div.landing_constrained > p > a |
Kobo section > div.landing_constrained > p > a |
These are opportunities to improve the legibility of your content.
Names and labels
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 |
|---|
div#control_bar > div.container-fluid > aside.logo > a div#control_bar > div.container-fluid > aside.logo > a |
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.
Best practices
Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.
Informational: a Permissions-Policy directive showing feature -> allowed origins.
Source: MDN Permissions-Policy
| Failing Elements |
|---|
head > meta head > meta |
These items highlight common accessibility best practices.
Best Practices
General
Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Access to font at 'https://d2kfnvwohu0503.cloudfront.net/fonts/LyonDisplay-Regular-Web.woff' from origin 'https://instapaper.com' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header has a value 'https://www.instapaper.com' that is not equal to the supplied origin. | |
Failed to load resource: net::ERR_FAILED |
SEO
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.
Crawling and Indexing
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
div#control_bar > div.container-fluid > nav.auth_nav > a.speed_endstate_ui |
div#sign_in_modal_group > form.modal_form > div.form_line_forgot_password > a.open_modal div#sign_in_modal_group > form.modal_form > div.form_line_forgot_password > a.open_modal |
To appear in search results, crawlers need access to your app.