Six sizes, one file
Each size is rendered from the vector, so the 16 px version is a real downscale, not a blurry crop of a large image.
Free browser tool
Convert SVG to ICO with every favicon size inside.
Drop a logo or icon SVG, fit the canvas to a square, and download one .ico that contains 16, 32, 48, 64, 128 and 256 px versions. Browsers pick the size they need.
No file handy? Have a PNG or JPG? Convert it to SVG first
Runs in your browser. Nothing is uploaded and no credits are used.
Details
How it works
Square first
Favicons are square. Use Fit to 1:1 in the Canvas panel; the artwork is centred with transparent padding.
Keep it simple
Thin lines and small text vanish at 16 px. Hide fine details, thicken strokes or use the mark only before exporting.
Limits
What this tool cannot do
- The ICO stores PNG images; very old browsers that need BMP entries are not supported.
- Transparency is preserved; JPG-style backgrounds are baked in if you choose one.
FAQ
Frequently asked questions
What sizes should a favicon.ico contain?
16 and 32 px for browser tabs, 48 for Windows shortcuts, 64 to 256 for high-density displays and pinned sites. This tool writes all six.
Should I use ICO or SVG for a favicon?
Modern browsers accept SVG favicons, but Safari and many older clients still want ICO. Ship both: the SVG for sharpness and the ICO as the fallback.
My icon looks muddy at 16 px. What can I do?
Simplify: hide small parts, remove thin outlines, and increase contrast. Export again; each size is rendered fresh from the vector.