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Image format · .ico

ICO: what it’s for

ICO is the Windows icon container: multiple sizes of the same mark in one file, used for favicons and desktop icons. Design in PNG or SVG, export to ICO as the last step — our PNG to ICO path does exactly that.

Strengths

  • Holds 16px through 256px sizes in a single file
  • The favicon standard browsers request automatically
  • Convert from PNG locally in one step
  • Lossless at every embedded size

Honest limits

  • Not an editing format — always derive ICO from a PNG master
  • Limited color handling in the smallest legacy sizes
  • The web is moving to SVG/PNG favicons; ICO is the fallback
  • Multi-size authoring by hand is fiddly — generate, don't draw

Free ICO tools

Every tool runs in your browser — files never leave your device. Badges say exactly what each tool does with ICO.

ICO FAQs

How do I make a favicon from my logo?

Export a square PNG of your logo, then convert PNG to ICO — the result drops straight into your site root as favicon.ico.

Do I still need ICO in 2026?

As a fallback, yes — include it alongside an SVG favicon and every browser is covered, old and new.

Can I get my PNG back from an ICO?

Yes — ICO to PNG extracts the icon back to a normal image at its embedded sizes.

Is ICO conversion private?

Completely. Conversion runs in your browser; files never upload.