Favicon ToolsVerifyBuild

Agent first app icons & favicon setup.

Production stays clean and on-brand; staging and localhost tabs get a badge, and the address bar names where you are, so you never mistake staging for the real thing.

On production
https://octo.tools
octo.tools
SquareTheme-aware
  1. 1Base image
  2. 2Options
  3. 3Download

Set base image

Ideally at least 512×512 pixels for crisp results.

Create Favicon

Pull existing from URL

Click or drag image here

PNG, JPG, or SVG up to 10MB (auto-compressed to 3MB)

Upload an image above to see installation instructions, preview all sizes, and verify your website.

Build a new favicon

No logo yet? Pick an emoji, brand logo, or icon below and we'll turn it into a full kit right here, with no need to leave the page.

Click an icon to set it as your base image, and we'll generate the full kit instantly. Want a logo, brand mark, or fine control? Open the full builder.

Verify website coverage

Scan any live URL to see which icons are present, which are missing, and where caching is serving a stale favicon.

Verify a site →

Enter a domain to run a live scan on the verify page.

Example: example.com4 / 6 found
favicon.ico Found
favicon-32x32.png Found
apple-touch-icon.png Found
manifest.json Found
android-icon-192x192.png Missing
theme-aware (light/dark) Missing

Sample data. Run a real scan on the verify page.