Create a multi-size ICO with common favicon dimensions directly in your browser.
The primary converter above already creates a real multi-resolution ICO. This optional workspace reuses the same selected source file while adding fit/crop/stretch behavior, padding, per-size previews, an exact frame audit, and a copyable deployment checklist.
Choose the source image in the primary converter first; processing stays in this browser.
Create from artwork, inspect tiny sizes, generate platform assets, then audit the local package and manifest declarations before deployment.
These tools do not fetch your live site, verify HTTP headers, confirm browser cache refresh, test service workers, or certify installability across every platform.
Use the tool first, then apply these checks to verify the inputs, interpret the result, and hand it off without displacing the primary workflow.
A logo that looks clean at 512 pixels can become muddy at 16 or 24 pixels. Build the icon, then inspect each embedded size at its actual pixel dimensions. Simplify fine lines or excessive detail in the source artwork when the smallest preview loses recognizable shape or contrast.
Square icons are the safest source, but real logos are often wide or tall. Fit mode preserves the whole image with surrounding space, crop mode fills the square and may remove edges, and stretch mode changes proportions. Record the chosen behavior so another person can reproduce the same favicon later.
Transparent padding can look correct on a light editor canvas yet disappear against a dark browser tab or Windows theme. Preview the generated sizes over more than one background and check the alpha edge for unwanted halos before replacing an existing favicon or application icon.
A valid ICO container does not prove the website is serving it from the expected URL or that caches have refreshed. After deployment, request the favicon directly, inspect the page link tags, and test a fresh browser profile before concluding that an old icon is a conversion problem.
WebToolArc