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PNG to ICO

To convert a PNG to ICO, drop your PNG into Logo2Favicon and it encodes a true multi-resolution favicon.ico containing 16x16, 32x32, and 48x48 images in one file - not a renamed PNG. The conversion runs in your browser, so nothing is uploaded.

What this conversion is

A PNG-to-ICO conversion re-encodes your PNG into the ICO container format. ICO is a Windows/web icon format that can hold several resolutions in a single file, which is exactly why favicon.ico is the universal browser fallback. The tool packs 16, 32, and 48 into one .ico.

Why and when you need it

  • Browsers auto-request /favicon.ico from the site root, and older clients and some tools prefer ICO.
  • ICO stores multiple sizes in one file, so the browser picks the crispest match without extra requests.
  • Renaming a .png to .ico does not work - the byte structure is different and clients may reject it.

How to do it with Logo2Favicon

  1. Open the generator. Open the Logo2Favicon generator on the homepage.
  2. Drop your PNG. Upload a square PNG at 256x256px or larger so the 16/32/48 frames stay sharp.
  3. Generate the ICO. The tool encodes a real multi-resolution favicon.ico (plus the rest of the set) in your browser.
  4. Download favicon.ico. Download the bundle and place favicon.ico at your site root; browsers find it automatically.

Format gotchas

  • A renamed .png is not a valid .ico - it must be re-encoded, which is what this conversion does.
  • Keep ICO contents to 16/32/48; larger sizes belong in PNG icons and the manifest, not the ICO.
  • Transparency is preserved in the ICO, but very fine detail still vanishes at 16x16 - simplify the mark.
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Start: png to ico

Drop your file into the generator and download the complete, correctly named set in seconds - generated privately in your browser, with nothing uploaded and no sign-up.

Open the generator

Frequently asked questions

How do I convert a PNG to an ICO file?
Drop your PNG into Logo2Favicon and it encodes a real multi-resolution favicon.ico containing 16, 32, and 48px images. The conversion runs in your browser and you download the .ico directly.
Can I just rename PNG to .ico?
No. ICO is a different container format. Renaming changes the extension but not the bytes, so browsers and tools may reject it. A converter re-encodes the image properly.
What sizes should be inside a favicon.ico?
16x16, 32x32, and 48x48. ICO is multi-resolution, so packing those three covers tabs, taskbars, and shortcuts from one file.
Where do I put the .ico file?
At your site root as favicon.ico. Browsers automatically request /favicon.ico even without a link tag, so the root location is the reliable fallback.

Other conversions

  • PNG to favicon - Turn a single PNG into favicon.ico plus every modern icon size, instantly and privately.
  • SVG to favicon - Rasterize a crisp vector logo into favicon.ico and every PNG/Apple/PWA size.
  • JPG to favicon - Strip a JPG's solid background and export a clean favicon.ico and full icon set.
  • Logo to favicon - One logo becomes the entire production-ready favicon and app-icon set in seconds.
  • SVG to ICO - Rasterize a vector into a real multi-resolution favicon.ico, crisp at every size.

Prefer a platform-specific walkthrough? See favicon by platform, or read the complete favicon guide.