ICO to PNG Converter: Free, Private, No Upload

Convert ICO files to PNG in your browser. Lossless output, batch up to 20 files at once, no upload, no account, no watermark. Your files never leave your device.

ICO to PNG
Batch up to 20 files
No upload, no account
Metadata stripped

1Add up to 20 images
2Pick from 18 formats
3Download or copy the code

Processed on your device. Your images are never uploaded, and metadata is stripped. How we keep it private

How do I convert ICO to PNG for free?

Drop your ICO files into the tool above, choose PNG as output, and download the result. Everything runs in your browser, so nothing is uploaded and there is no limit or watermark. It works on Windows, Mac, Linux, ChromeOS, iOS and Android — anywhere you have a modern browser.

Price: Free, no credits and no daily cap
Account required: No
File uploaded to server: No, processed locally in your browser
Batch limit: Up to 20 files at once
Input format: ICO
Output format: PNG
Best for: PNG workflows, lossless quality, editing, printing
Works on: Chrome, Edge, Firefox, Safari, iOS and Android browsers
Privacy: No upload, no tracking, metadata stripped
Output quality: Lossless, exact pixels

How to convert ICO to PNG

1
Drop your ICO files
Drag up to 20 ICO files onto the page or click to choose them. Everything runs in your browser.
2
PNG is preselected
Output is already set to PNG. Adjust quality, resize or batch if you want.
3
Download
Save each PNG, or download all of them together as a ZIP.

ICO to PNG: what changes and when it makes sense

ICO is an Windows icon format. It is best known for packing several sizes (16, 32, 48, 256 pixels) into a single file. The main drawbacks are a maximum size of 256 by 256 pixels and little use outside icons.

PNG is a Portable Network Graphics format. It is best known for exact pixel reproduction, crisp text and edges, and full alpha transparency. The main drawbacks are large files for photographs and no lossy mode for trading quality against size.

ICO vs PNG at a glance

Property	ICO	PNG
Type	Container format	Raster image
Compression	A container holding one or more bitmaps, each stored as BMP or PNG data	Lossless (DEFLATE), with an optional 8-bit palette mode
Transparency	Full alpha channel with soft edges	Full alpha channel with soft edges
Animation	No	No
Colour depth	Up to 32-bit colour with an 8-bit alpha channel	8 or 16 bits per channel, or 8-bit indexed colour
Support	Supported by Windows and by browsers as a favicon, but most image viewers and editors do not open it directly	Opens in every browser and image editor
History	Introduced by Microsoft with Windows 1.0 in 1985. The modern 32-bit alpha version became standard with Windows XP (2001). Windows Vista (2007) added PNG compression inside ICO for icons larger than 48x48.	Created in 1995 as a free, patent-unencumbered replacement for GIF after Unisys began charging royalties for LZW compression. Became a W3C Recommendation in 2003. The signature bytes are 89 50 4E 47 0D 0A 1A 0A — "PNG" with newlines designed to catch file corruption.

What actually changes in this conversion

Both ICO and PNG are lossless, so the pixels come through unchanged.
Transparency is preserved, including soft edges.
EXIF, GPS and camera data are stripped on every conversion. That is good for privacy, but you lose capture dates.

About ICO: history and technical details

Introduced by Microsoft with Windows 1.0 in 1985. The modern 32-bit alpha version became standard with Windows XP (2001). Windows Vista (2007) added PNG compression inside ICO for icons larger than 48x48.

Technical: Container holds 1-65535 images. Each entry has a 16-byte directory: width, height, colour count, planes, bit count, data size, data offset. Images are BMP (DIB) or PNG. Max dimension 256x256. Typical Windows icons use 16, 32, 48, 64, 128, 256.

Real-world size: A 6-size favicon.ico is typically 15-40 KB. A single 256x256 PNG favicon is 8-15 KB. Modern best practice uses separate files for 16, 32, 180 (Apple), 192, 512 (PWA).

Popular tools: IcoFX, GIMP, Adobe Photoshop (with plugin), ImageMagick, Favicon Generator, RealFaviconGenerator.

Alternatives: PNG (single size, widely accepted), SVG (sharp at any size), favicon.ico (still needed for legacy).

About PNG: what you get

Created in 1995 as a free, patent-unencumbered replacement for GIF after Unisys began charging royalties for LZW compression. Became a W3C Recommendation in 2003. The signature bytes are 89 50 4E 47 0D 0A 1A 0A — "PNG" with newlines designed to catch file corruption.

Technical: Uses DEFLATE (LZ77 + Huffman) compression. Two main modes: 8/16-bit truecolour with alpha, and 8-bit indexed with up to 256 colours. Filters per scanline (None, Sub, Up, Average, Paeth) before DEFLATE for better ratios.

Real-world size: A 1920x1080 screenshot is 200-600 KB as PNG. As JPG at quality 85 it is 100-300 KB but with blurry text. A 12-MP photo is 18-25 MB as PNG, 2-4 MB as JPG. PNG wins on text, JPG wins on photos.

Popular tools: Adobe Photoshop, GIMP, Figma, Sketch, Snipping Tool, macOS Screenshot, ImageMagick, pngquant, oxipng.

Alternatives: WebP lossless (20-30% smaller), AVIF (better for photos), JPG (photos only), SVG (vector graphics).

Browser and software compatibility

ICO: Supported by Windows and by browsers as a favicon, but most image viewers and editors do not open it directly. PNG: Opens in every browser and image editor.

PNG output opens in virtually every browser, operating system and editor.

Why people move away from ICO

ICO is capped at 256 by 256 pixels, so it is of no use as a general-purpose image format.
Many image viewers and design tools cannot open ICO directly, so you need a PNG to edit it.

Why people choose PNG

PNG keeps every pixel, making it safe for screenshots, diagrams, logos and anything with text.
It stores full alpha transparency, including soft shadows and anti-aliased edges.
Lossless output means you can keep editing without generational loss.

Common mistakes with ICO

Creating a favicon.ico with a single 16x16 size — looks blurry on Retina
Using ICO for general images — 256x256 limit makes it useless
Forgetting the .ico fallback — some old browsers still request it automatically

Best practices for keeping quality

ICO files are tiny, often 32 by 32 pixels. Scaling them up blurs, so start from a larger original when possible.
Converting a lossy file to PNG stops further loss but does not restore detail already discarded. Expect a much larger file with no visible gain.
PNG suits screenshots and flat graphics. For photographs, a lossy format is usually the better trade.
Resize before converting if the image will be shown small. A 4000 pixel photo displayed at 800 pixels wastes bytes in any format.
Check the result at 100 percent zoom, especially around text, edges and gradients, before you replace any originals.
Keep your original files. Conversions to a lossy format cannot be undone.
When you convert a set of images, use the same quality setting for the whole batch. The converter handles up to 20 files at once.

ICO to PNG questions

Quick answers about privacy, quality, supported formats, file limits and how PNG works.

Why convert ICO to PNG?

PNG is lossless. It keeps every pixel exactly. It is the safe choice when you plan to edit, print or need exact pixel data.

Will converting ICO to PNG lose quality?

No. PNG is lossless, so nothing is thrown away.

Does PNG keep transparency?

Yes. PNG supports full transparency, so transparent areas in your original are kept.

Are my files uploaded?

Never. Everything runs in your browser. Your files never leave your device. Open DevTools Network tab while processing — you will see no upload request.

Can I convert many files at once?

Yes, up to 20 files at once. Download them individually or all together as a ZIP.

Does the converter strip metadata?

Yes. Browsers do not pass EXIF data through a canvas, so GPS, camera model and dates are removed on every conversion. That is good for privacy.

Is it free?

Yes. No credits, no daily cap, no account, no watermark. The practical limit is your device memory.

Is PNG lossless?

Yes. PNG uses DEFLATE compression, which is fully lossless. Every pixel is preserved exactly. PNG can reduce file size but never changes any pixel value.

Can PNG be animated?

Standard PNG is not animated, but APNG (Animated PNG) exists and is supported by most modern browsers. It is rarely used because WebP and GIF animation are better supported.

Why are PNG files so large?

Because PNG preserves every pixel with no lossy compression. Photographs have millions of slightly different pixel values that DEFLATE cannot compress well. This is why PNG of photos can be 10x larger than JPG.

Your files never leave your device

No upload, no account, no tracking. Everything happens in your browser using the Canvas API and WebAssembly. You can confirm this in your browser's DevTools Network tab while the tool runs — no request carries your file. See why ToolDeck is different.