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Creative Tools · In-Browser

PNG to ICO — multi-size .ico converter online

Convert PNG / JPG / SVG images to a .ico icon file online: one ico containing 16×16 / 32×32 / 48×48 resolutions, optional 256×256, transparency kept and crisp in the taskbar. Works on desktop, tablet & mobile — converted locally, nothing uploaded.

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PNG / JPG / SVG · Multi-size .ico output · No upload
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Works on desktop, tablet & mobileNo upload — stays on your deviceNo watermarkLocal processing
Quick answer

ICO is the container format used by Windows icons and website favicon.ico. One .ico file can hold multiple resolutions, and the system picks the right one per context (tab 16, taskbar 32/48, large icons 256). This tool center-crops your PNG / JPG / SVG to a square and encodes a multi-resolution .ico (16/32/48, optional 256) locally in your browser — alpha transparency preserved, with a proper mask so small sizes have no black fringes. Great for favicon.ico, desktop shortcut icons and app icons. Your image is never uploaded.

When

When you need it

Website favicon.ico

Legacy browsers and crawlers look for /favicon.ico by default — safest to have one.

Desktop shortcut icons

Windows shortcuts and folders need real .ico — renaming a PNG does not work.

App / tool icons

Give your own programs a multi-resolution .ico that stays sharp at any scale.

Trade-off

About PNG to ICO

Pros
  • One ico holds 16/32/48 resolutions, optional 256 hi-res
  • Transparency kept, masked to avoid black fringes at small sizes
  • Encoded locally in the browser — no upload
Notes
  • Renaming a PNG to .ico is not a real ico (fails in some contexts)
  • Non-square images are center-cropped to a square
  • For a full site icon set (PNGs + apple-touch + manifest) use the Favicon Generator
Related

Related tools

Favicon Generator
Full pack: ico + PNGs + HTML code
SVG to PNG
Rasterize vectors first
Resize Image
Crop / resize to a square first
FAQ

PNG to ICO FAQ

No. ICO has its own structure (an icon directory plus multiple bitmaps); a renamed "fake ico" breaks in taskbars, shortcuts and other contexts. A real encoder is required.

Tick it if the icon will be used as a Windows app icon on large-icon views or high-DPI screens; for a web favicon you can leave it off for a smaller file.

Yes. Pixels are stored as 32-bit with alpha plus a transparency mask, so there are no black fringes even at small sizes.

No — the .ico encoding runs locally in your browser; your image never touches a server.