Free browser image tools — no signup. Sign up for 3 free cloud conversions.
Skip to content

PNG to ICO Converter

Convert PNG to ICO online for free. Builds a multi-size Windows favicon with 16×16, 32×32 and 48×48 icons in one file. Make your favicon now.

Drop files here or click to upload

PNG · up to 20.0 MB per file

Files are private and deleted after conversion

How to use PNG to ICO Converter

  1. 01

    Upload your PNG

    Best results come from a square PNG with transparency, 48×48 pixels or larger — up to 20 MB anonymous, 50 MB free account, or 200 MB paid.

  2. 02

    Automatic square canvas fit

    Non-square images are centered on a transparent square canvas so the icon shapes come out consistent, even if your source PNG is a rectangle.

  3. 03

    Multi-size .ico generation

    16×16, 32×32 and 48×48 versions are rendered from the canvas and packed into a single .ico — the fixed set browsers and Windows expect for favicons.

  4. 04

    Download your favicon-ready ICO

    Grab the .ico via a signed download link — ready to drop into your site. It is auto-deleted within 24 hours, and the uploaded PNG within 6–24 hours.

Why choose our PNG to ICO Converter

Favicon-ready across browsers and OS

The 16×16, 32×32 and 48×48 sizes packed into one .ico match exactly what Chrome, Firefox, Safari, Edge and Windows shortcuts request.

Sharp at every requested size

Each size is rendered separately from your canvas-fit source instead of crudely scaling one bitmap, so small sizes stay legible.

Your artwork stays private

Uploads use HTTPS, converted .ico files are auto-deleted within 24 hours, and uploaded PNGs are removed within 6–24 hours.

Free to build your favicon

Anonymous visitors get 1 free server conversion up to 20 MB; a free account adds 3 conversions every 30 days at 50 MB with batches of 5.

No signup to make your first favicon

Build and download your first .ico instantly — create an account only when you need more conversions or batches.

Settings guide

Multi-size output (16/32/48, fixed)
No options to set. Your PNG is fit onto a square transparent canvas, then 16×16, 32×32 and 48×48 versions are generated and packed into a single .ico — the standard set Windows and browsers use for favicons.

About the formats

PNG

PNG is a lossless raster image format created in the mid-1990s as a patent-free replacement for GIF. It is the standard choice for screenshots, logos, UI graphics, and any image that needs transparency.

PNG preserves every pixel exactly and supports a full 8-bit alpha channel, so text and sharp edges stay crisp. The downside is size: photographs saved as PNG are far larger than the same image as JPG or WebP. Support is universal in browsers and editors, making it a safe default for graphics — just avoid it for large photo collections.

ICO

ICO is the Windows icon format, best known today as the container behind website favicons. A single .ico file can hold the same image at several sizes — commonly 16, 32, and 48 pixels — so the system can pick the right one.

For favicons, ICO still has the broadest compatibility: browsers request /favicon.ico by default, and even very old clients understand it. The format tops out at 256 x 256 pixels and is not meant for photos or general images. Modern sites often add PNG or SVG icons alongside, but shipping a classic ICO remains the safe baseline.

Troubleshooting

My favicon looks blurry
Start from a square source image at least 48×48 pixels — larger is better. Small or non-square sources get scaled and padded, which softens the result. Simple, bold shapes survive the 16×16 size best.
The icon has empty margins around it
Non-square PNGs are fit onto a square transparent canvas, leaving transparent padding on two sides. Crop your source image to a square before converting to fill the icon completely.
The icon background isn't transparent
The converter preserves transparency, but only if the source PNG actually has an alpha channel. Open the PNG in an editor, remove the background so it shows a checkerboard, re-export, and convert again.

FAQ

What sizes does the ICO contain?
The output is a multi-size .ico containing 16×16, 32×32 and 48×48 versions of your image — the sizes Windows and browsers expect for favicons. The sizes are fixed.
What makes a good favicon source image?
Start from a square PNG with transparency, ideally 48×48 pixels or larger. Non-square images are fit onto a square transparent canvas, which can leave empty margins.
Is my image kept private?
Yes. Uploads use HTTPS, converted outputs are auto-deleted within 24 hours, and uploaded inputs are removed within 6–24 hours.
What are the limits for this tool?
Anonymous: 20 MB and 1 free server conversion. Free account: 50 MB, 3 conversions per 30 days, batches of 5. Paid: 200 MB and batches of 100.
Can I choose different icon sizes than 16/32/48?
Not currently — the .ico always contains this fixed set of three sizes, since it covers the range Windows and browsers actually request for favicons and shortcuts.
Can I convert multiple PNGs into ICO files at once?
Yes. Free accounts can batch up to 5 files at a time; paid accounts up to 100.
Will the favicon work in every browser and on Windows?
Yes. The multi-size .ico this tool builds follows the standard favicon format that Chrome, Firefox, Safari, Edge and Windows shortcuts all recognize.

Related tools