What is a Favicon Checker?
A favicon checker is a free tool that audits your website's favicon implementation — scanning every icon declaration your page publishes and validating file formats, sizes, HTML tags, and server responses. Instead of manually testing across browsers and devices, it gives you a full compatibility report instantly so you can fix issues before visitors notice them.
Your favicon is a small asset with big impact. A recognizable icon builds brand recognition in browser tabs and bookmarks, improves how your listing appears in Google search results, and ensures your logo displays correctly on iOS home screens, Android launchers, and PWA install prompts. A blurry icon or low-resolution file damages perceived quality — and this free favicon checker tells you exactly what to fix.
Features of This Favicon Checker
Check your favicon setup across all major platforms — from browser tab icons to PWA install prompts — with one URL scan.
Automatic Favicon Detection
Scans your page and detects all favicon files — ICO, PNG, and SVG favicons — alongside every icon link tag and manifest entry declared in your HTML. No manual inspection required.
Browser Compatibility Report
Generates a compatibility report covering desktop browsers including Chrome, mobile devices, iOS, and Android — so you know which icon sizes are covered and which leave a gap across major platforms.
Size and Format Validation
Verifies that declared dimensions match actual file dimensions and confirms valid MIME types. Incorrect size declarations cause blurry icon rendering — this check catches that before it reaches users.
HTML Tag Analysis
Audits every link tag in your page head to detect missing, duplicate, or incorrectly declared rel icon entries. Confirms the web app manifest is linked and reachable from the root.
Manifest and Apple Touch Checks
Inspects the web app manifest for 192×192 and 512×512 icon coverage and maskable icon declarations. Also checks for the Apple touch icon at 180x180 required for iOS home screen display.
Fix Instructions and Code Snippets
Every detected issue includes a recommended fix and a copy-ready HTML snippet. Light and dark mode favicon support, PNG and SVG format guidance, and manifest entry examples are all included.
How the Favicon Checker Works
Enter a URL or upload an icon file — the favicon tester does the rest.
Enter Your Site URL or Upload a File
Paste your website's homepage URL or upload an icon file directly. The tool fetches your page, reads every favicon-related link tag and manifest declaration, and queues each referenced file for validation.
Tool Scans Favicon Files and Tags
The favicon checker crawls candidate favicon files — favicon.ico, PNG icons, SVG favicons, and manifest-linked assets — validating file formats, dimensions, MIME types, and HTTP response codes to confirm every asset is reachable and correctly declared.
Review Your Compatibility Report
A structured report shows which icon sizes are present, which are missing (32x32, 180x180, and others), and where HTML tags are incorrect or absent. Each finding includes a compatibility grade across browser, iOS, and Android contexts.
Apply Fixes and Verify
Use the copy-ready HTML snippets to fix missing declarations, add the correct tag for each icon size, and ensure your server returns valid MIME types. Re-run the favicon tester to verify everything is correctly implemented.
Why Sites Still Ship Broken Favicons
Most favicon problems are invisible during development — and only surface when a visitor notices a missing or blurry icon in their browser tab or home screen.
Single favicon.ico at Root Only
A favicon.ico at the root handles older desktop browsers but leaves Apple touch, Android PWA, and search engines like Google without the correct icon sizes for home screen and SERP listing display.
SVG Without a Raster Fallback
SVG favicons are ideal for dark mode and scaling, but some browsers and native contexts still expect PNG. Shipping SVG only without a PNG fallback leaves coverage gaps on older or simplified consumers.
Manifest Icons Missing Key Sizes
Many web app manifests ship without a 192×192 or 512×512 icon — or without a maskable icon declaration. This breaks PWA install prompts and causes incorrect cropping on Android launchers.
Declared Sizes Don't Match Files
If the size attribute in a link tag doesn't match the actual image dimension, devices render a blurry icon or fall back to a generic placeholder. The favicon tester catches this mismatch immediately.
Frequently Asked Questions
Do favicons affect SEO?
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Favicons don't directly change search rankings, but they improve brand recognition and visual quality in Google search results. A correctly sized and recognizable favicon in the SERP listing improves perceived credibility and can increase click-through rates — an indirect SEO benefit that's worth getting right.
What favicon formats should I use?
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Use favicon.ico for legacy browser support, PNG for raster icons at standard sizes (16×16, 32×32, 180×180, 192×192), and SVG for modern scalable icons that adapt to light and dark mode. Providing PNG and SVG together gives you the broadest coverage across all major platforms and contexts.
Why is my favicon not showing on mobile?
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The most common causes are a missing Apple touch icon at 180x180 for iOS, an incorrect or absent web app manifest for Android, a file blocked by robots.txt, or aggressive browser caching serving an old icon. Run the favicon checker against your site URL to identify the exact issue and get a specific fix.
Does this favicon validator inspect the web app manifest?
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Yes. If your page declares a manifest link tag, the favicon validator fetches and audits the icon entries it contains — including whether a maskable icon is declared, whether the 192×192 and 512×512 sizes are present, and whether the manifest file itself is reachable and returns a valid response code.