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https://imageshack.us

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
74
GRADE
C
FIX
3
REVIEW
2
PASS
8
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
93
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
65
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.12 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.41 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

4 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.12 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.

1.50 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
8 PASS 2 REVIEW 3 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (851.1 KiB of 851.5 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
6 scripts, 377 KB unused
FIX
6 scripts, 377 KB unused
Warning::
https://imageshack.com/v2_js/prod/app.min.js?v=9.4...: 229 KB unused (85%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MK2...: 73 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/bundle/sdk.js/: 54 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://imageshack.com/v2_js/vendor/jquery-2.0.3.m...: 21 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 377 KB
377 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://imageshack.com/v2_js/prod/app.min.js?v=9.4.72271 KB229 KB (85%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MK2HJHP112 KB73 KB (66%)✓3rd
https://connect.facebook.net/en_US/bundle/sdk.js/78 KB54 KB (69%)✓3rd
https://imageshack.com/v2_js/vendor/jquery-2.0.3.min.js34 KB21 KB (64%)✓3rd
https://connect.facebook.net/en_US/sdk.js5 KB—✓3rd
https://ssl.google-analytics.com/ga.js17 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Page Weight Inventory
19 resources · 852 KB · 377 KB savings available
REVIEW
19 resources · 852 KB · 377 KB savings available
Info::
Within 1MB page-weight target
Got: 852 KB
Info::
~377 KB of savings available
Warning::
18 third-party resources (100% of weight)
Info::
1 resources over 200KB
19 resources · 851.5 KiB · 18 third-party Within 1MB page-weight target
JavaScript 61% · 516.5 KiB
Image 23% · 196.3 KiB
CSS 10% · 86.5 KiB
Font 5% · 42.0 KiB
Document 1% · 10.2 KiB

~377.4 KiB of savings available

Remove unused JavaScript: 377.4 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
852 KB transferred, 19 requests
PASS
852 KB transferred, 19 requests
Info::
Page weighs 2.3 MB (852 KB transferred)
Warning::
JavaScript is 517 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 517 KB
Info::
19 HTTP requests
Info::
Estimated 0.17 g CO2 per page load
852 KB / 2.4 MB budget
852 KB transferred
19 requests
0.17 g CO2 per page load
JavaScript 516.5 KiB 61%
Images 194.7 KiB 23%
CSS 86.5 KiB 10%
Fonts 42.0 KiB 5%
HTML 9.8 KiB 1%
Other 2.1 KiB 0%
0 2.4 MB 4.9 MB
Under budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A
Image Optimization
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 195 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
207ms total JS execution
PASS
207ms total JS execution
Info::
https://imageshack.com/v2_js/prod/app.min.js?v=9.4...: 117ms CPU time
Info::
https://imageshack.com/: 90ms CPU time
Warning::
Third-party scripts: 207ms (100% of total)

Main Thread Breakdown

Script Evaluation 34% Script Parsing & Compilation 22% Other 22% Style & Layout 18% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://imageshack.com/v2_js/prod/app.min.js?v=9.4.72117ms47ms59ms3rd
https://imageshack.com/90ms4ms1ms3rd
A+
Font Loading
1 fonts (42 KB)
PASS
1 fonts (42 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

42 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 1.1 s LCP 1.4 shttps://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.0 KiB — 21 ms — font-display: swap
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 21 ms
Start 265 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
19 requests over 541ms
INFO
0 ms 500 ms 1.0 s FCP 1.1 s LCP 1.4 shttps://imageshack.us// https://imageshack.us/ — 301 — 449 B — 16 ms — http/1.1https://imageshack.com/imageshack.com/ https://imageshack.com/ — 200 — 3.2 KiB — 28 ms — http/1.1https://fonts.googleapis.com/css?family=Merriweather:400,700|Open+Sans:400,300,600fonts.googleapis.com/css?family=Mer... https://fonts.googleapis.com/css?family=Merriweather:400,700|Open+Sans:400,300,600 — 200 — 2.4 KiB — 126 ms — h2https://imageshack.com/v2_css/prod/app.min.css?v=9.4.72imageshack.com/v2_css/prod/app.min.... https://imageshack.com/v2_css/prod/app.min.css?v=9.4.72 — 200 — 82.2 KiB — 27 ms — http/1.1https://imageshack.com/v2_css/prod/app-webkit.min.css?v=9.4.72imageshack.com/v2_css/prod/app-webk... https://imageshack.com/v2_css/prod/app-webkit.min.css?v=9.4.72 — 200 — 1.1 KiB — 10 ms — http/1.1https://imageshack.com/v2_js/vendor/jquery-2.0.3.min.jsimageshack.com/v2_js/vendor/jquery-... https://imageshack.com/v2_js/vendor/jquery-2.0.3.min.js — 200 — 33.7 KiB — 23 ms — http/1.1https://imageshack.com/v2_js/prod/app.min.js?v=9.4.72imageshack.com/v2_js/prod/app.min.j... https://imageshack.com/v2_js/prod/app.min.js?v=9.4.72 — 200 — 270.9 KiB — 56 ms — http/1.1https://connect.facebook.net/en_US/sdk.jsconnect.facebook.net/en_US/sdk.js https://connect.facebook.net/en_US/sdk.js — 200 — 5.1 KiB — 16 ms — h3https://www.googletagmanager.com/gtm.js?id=GTM-MK2HJHPwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-MK2HJHP — 200 — 111.7 KiB — 116 ms — h2https://ssl.google-analytics.com/ga.jsssl.google-analytics.com/ga.js https://ssl.google-analytics.com/ga.js — 200 — 17.4 KiB — 47 ms — h2https://www.facebook.com/plugins/like.php?href=https%3A%2F%2Fwww.facebook.com%2Fpages%2FImageShack%2F125060927538976&send=false&layout=button_count&width=100&show_faces=false&action=like&colorscheme=light&font&height=21www.facebook.com/plugins/like.php?h... https://www.facebook.com/plugins/like.php?href=https%3A%2F%2Fwww.facebook.com%2Fpages%2FImageShack%2F125060927538976&send=false&layout=button_count&width=100&show_faces=false&action=like&colorscheme=light&font&height=21 — 200 — 6.6 KiB — 54 ms — h3https://imageshack.com/v2_images/sprite.png?v=12imageshack.com/v2_images/sprite.png... https://imageshack.com/v2_images/sprite.png?v=12 — 200 — 31.6 KiB — 14 ms — http/1.1https://imageshack.com/v2_images/home-hero2.jpgimageshack.com/v2_images/home-hero2... https://imageshack.com/v2_images/home-hero2.jpg — 200 — 162.6 KiB — 28 ms — http/1.1https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 200 — 42.0 KiB — 21 ms — h3https://static.xx.fbcdn.net/rsrc.php/v5/yA/l/0,cross/aSF1HWkDHx7.cssstatic.xx.fbcdn.net/rsrc.php/v5/yA/... https://static.xx.fbcdn.net/rsrc.php/v5/yA/l/0,cross/aSF1HWkDHx7.css — 200 — 375 B — 22 ms — h3https://static.xx.fbcdn.net/rsrc.php/v5/yb/l/0,cross/yPnE3me-9-0.cssstatic.xx.fbcdn.net/rsrc.php/v5/yb/... https://static.xx.fbcdn.net/rsrc.php/v5/yb/l/0,cross/yPnE3me-9-0.css — 200 — 480 B — 25 ms — h3https://ssl.google-analytics.com/r/__utm.gif?utmwv=5.7.2&utms=1&utmn=1270538392&utmhn=imageshack.com&utmcs=UTF-8&utmsr=800x600&utmvp=1350x940&utmsc=24-bit&utmul=en-us&utmje=0&utmfl=-&utmdt=ImageShack%20-%20Best%20place%20for%20all%20of%20your%20image%20hosting%20and%20image%20sharing%20needs&utmhid=639093073&utmr=-&utmp=%2F&utmht=1776800174660&utmac=UA-39773598-1&utmcc=__utma%3D83568654.46163584.1776800175.1776800175.1776800175.1%3B%2B__utmz%3D83568654.1776800175.1.1.utmcsr%3D(direct)%7Cutmccn%3D(direct)%7Cutmcmd%3D(none)%3B&utmjid=369676823&utmredir=1&utmu=qAAAAAAAAAAAAAAAAAAAAAAE~ssl.google-analytics.com/r/__utm.gi... https://ssl.google-analytics.com/r/__utm.gif?utmwv=5.7.2&utms=1&utmn=1270538392&utmhn=imageshack.com&utmcs=UTF-8&utmsr=800x600&utmvp=1350x940&utmsc=24-bit&utmul=en-us&utmje=0&utmfl=-&utmdt=ImageShack%20-%20Best%20place%20for%20all%20of%20your%20image%20hosting%20and%20image%20sharing%20needs&utmhid=639093073&utmr=-&utmp=%2F&utmht=1776800174660&utmac=UA-39773598-1&utmcc=__utma%3D83568654.46163584.1776800175.1776800175.1776800175.1%3B%2B__utmz%3D83568654.1776800175.1.1.utmcsr%3D(direct)%7Cutmccn%3D(direct)%7Cutmcmd%3D(none)%3B&utmjid=369676823&utmredir=1&utmu=qAAAAAAAAAAAAAAAAAAAAAAE~ — 200 — 440 B — 25 ms — h2https://connect.facebook.net/en_US/bundle/sdk.js/connect.facebook.net/en_US/bundle/s... https://connect.facebook.net/en_US/bundle/sdk.js/ — 200 — 77.8 KiB — 12 ms — h3https://imageshack.com/favicon.icoimageshack.com/favicon.ico https://imageshack.com/favicon.ico — 200 — 1.6 KiB — 7 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 207ms · 274KB · $3/mo
imageshack.com
Other
Optional
Execution 117ms
Transfer 271 KB
Unused 85%
Monthly Cost $2/mo
imageshack.com
Other
Optional
Execution 90ms
Transfer 3 KB
Monthly Cost $1/mo

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

85% of imageshack.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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