Onlinetoolix
Favicon Checker Tool

favicon checker tool

Analyze, test, preview, and generate pixel-perfect favicon packages

Best Practices

Check live domain's favicon

Enter any website's address to scan, extract, and check standard formats, then preview its layout in simulated browsers, search engines, and homepages.

https://
Quick tests:

Fetched Assets: github.com

Standard Root Icon Auto-Fallback
Standard Favicon

favicon.ico

https://github.com/favicon.ico

Open
Google Favicon API (128x128) High Resolution
Google API Favicon

S2 Service (sz=128)

https://www.google.com/s2/favicons?domain=github.com&sz=128

Open
DuckDuckGo Vector Engine Service API
DuckDuckGo Favicon

ip3 Service

https://icons.duckduckgo.com/ip3/github.com.ico

Open

Color Space & Contrast

Verifying visual contrast on alternate browser layouts.

On Light Backdrop
Light preview
Standard
On Dark Backdrop
Dark preview
Standard
Dominant Theme Color:
#4F46E5

Real-world Mockups Preview

Chrome Browser Tab
Tab icon GitHub: Let's build
https://github.com
Google Mobile Search Result
Search icon
GitHub
https://github.com

GitHub: Let's build from here · GitHub

GitHub is where over 100 million developers shape the future of software, hosting source code, automating workflows, and collaborating on projects...

iOS Shortcut Preview
Mail
Cal
iOS Web clip icon
GitHub
Setup
Android Shortcut Preview
Phone
Android launcher icon
GitHub
Chrome
Cam
FAVICON REFERENCE MANUAL

Best Practices for Web Deployment

Favicons are mostly viewed at miniature scales (16x16 to 32x32 pixels). Standardizing lightweight transparent PNG assets ensures visual clarity and cross-compatibility with legacy browser standards.

Focus on Simplicity

Eliminate secondary lines, thin vector shapes, or text structures. Opt for clean high-contrast visual silhouettes.

Optimize Contrast

Always test your logo symbol against true white, grey, and true black frames to prevent elements from vanishing in native dark-mode tabs.

Scroll to Top