InfyTool
Free icons

PNG to ICO converter

One image in, a real multi-size favicon.ico out — 16, 32, 48 px and more in a single file, built on your device.

One square-ish PNG, SVG or JPG — 256 px or larger gives the sharpest ICO

No size limit · files are processed on your device and never uploaded · how it works

Advanced settings (optional)
Sizes inside the ICO
Include

16+32+48 is the classic favicon.ico set. Add 256 for Windows app icons; more sizes mean a bigger file.

Runs in your browser. Files are never uploaded — you can go offline after the page loads.

How to use the PNG to ICO

  1. Drop one square-ish image — PNG, SVG, JPG or WebP; 256 px or larger is ideal.
  2. Tick the sizes the ICO should contain (16+32+48 is the classic favicon set).
  3. Download favicon.ico — one file with every size inside.

Easy to use

Drop files, pick options, download. Whole folders at once, no signup, no daily limit.

Best quality

The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.

Private & secure

Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.

What a proper ICO is

A real .ico is a container of several images: the browser tab uses 16 px, Windows shortcuts 32 or 48, app tiles up to 256. Sites that convert your PNG into a single-size ICO make icons that look blurry somewhere. This tool renders each selected size from your source with high-quality scaling and packs them into one standards-correct file.

The rest of the favicon story

Modern browsers prefer an SVG favicon with the ICO as fallback — the favicon generator produces the whole set (SVG, ICO, Apple and Android icons plus the HTML). This page is the quick tool for when the ICO alone is what's asked for. Sizes reference: the favicon size guide.

Frequently asked questions

Why does an ICO contain several sizes?

Browsers and Windows pick the best-fitting image from inside the file: 16 px for tabs, 32/48 for shortcuts and taskbars. One ICO with 16+32+48 covers the classic uses; add 256 for Windows app icons.

Do I still need favicon.ico in 2026?

One, yes — crawlers and older software request /favicon.ico by path without reading your HTML. Pair it with an SVG favicon for modern browsers; the favicon generator makes the full set.

What input works best?

A square image, 256 px or larger — SVG is ideal because every size renders sharp. Non-square input is centred with transparent padding.

Favicon GeneratorComplete favicon & app icon package SVG to PNGCrisp PNGs at any size, batch QR Code GeneratorLinks, Wi-Fi access, contact cards

Your files never leave your device

Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.

  • No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
  • No limits. No file-size cap, no queue, no watermark, no account.
  • Runs on your CPU. Batches use several cores in parallel; nothing is throttled.

More free tools

Need icons or SVGs to start from?

InfyTool is built by the same team as these free libraries.

InfyIconFree SVG and PNG icons you can open directly in these tools. InfySVGFree SVG designs and illustrations, ready to optimise or convert. InfyPNGFree transparent PNG graphics for mockups and social posts.