Online Tool Store
· 4 min read
3 PNG to ICO Tools, Compared Honestly
Manesh Jayawardhana
CIO & Co-founder
You’ve got a PNG and need it as a proper Windows .ico file — for an app icon, a desktop shortcut, or a favicon that needs the classic format.
A multi-resolution .ico can hold several sizes in one file, and not every converter handles that cleanly — some produce a single-size icon, others let you pick exactly which sizes to bundle in.
How to judge a PNG to ICO tool
Supports multiple sizes in one file. A proper .ico bundles several resolutions — 16×16 up to 256×256 — so the right one renders depending on where it’s used.
No signup for a quick conversion. This is a small, one-off task.
Doesn’t publish your file anywhere. A converter that processes locally, or at minimum doesn’t display your icon publicly, is the safer choice for anything not meant to be shared.
Free tier gives a usable result. No queue, no forced upgrade just to download without ads.
The comparison
| Tool | Best for | Free tier | Watch out |
|---|---|---|---|
| Picflow | Fully browser-based, ad-free | Free, no signup | Doesn’t clearly state multi-size ICO support |
| ConvertICO | Choosing exact sizes (16px to 256px) | Free, no signup | Converted icons may display publicly on a “Recently Converted” page |
| FreeConvert | Batch conversion, large file support | Free, no signup | Free tier includes a queue and ads |
| PNG to ICO | Multi-resolution icon with chosen sizes | Free, no signup | No batch conversion of multiple PNGs at once |
Facts checked August 2026; tools change their plans.
Picflow
Picflow converts entirely in your browser, is explicitly ad-free with no registration required, and emphasizes privacy since your file never leaves your device during conversion.
It isn’t for someone who specifically needs to pick multiple icon sizes for one file — the page doesn’t clearly document support for bundling several resolutions into a single multi-size ICO.
ConvertICO
ConvertICO lets you select which icon layer sizes, from 16 to 256 pixels, go into the final multi-resolution ICO file, accepting up to 20 PNGs at once with no signup required.
It isn’t for someone converting something private — using the free tool means agreeing to display the icon on a public “Recently Converted Icons” page.
FreeConvert
FreeConvert supports a 1GB max file size and batch PNG-to-ICO conversion at no cost, with output presets for different Windows versions.
It isn’t for someone who wants a queue-free, ad-free experience — those are reserved for the paid upgrade, so free users may wait behind a queue and see ads.
PNG to ICO
Our converter turns a PNG into a multi-resolution Windows .ico file with the sizes you choose, entirely in your browser — nothing is uploaded, and there’s no queue or ads.
A real limitation: it converts one PNG at a time — for batch conversion of many files at once, you’d need a tool like FreeConvert instead.
Which one to pick
If you want a private, multi-size icon from a single PNG with no queue, use our PNG to ICO.
If you’re converting many PNGs at once, use FreeConvert.
If you want fine control over exactly which sizes go into the file and don’t mind the result appearing publicly, use ConvertICO.
If ad-free simplicity matters most for a single conversion, use Picflow.
How to do it with PNG to ICO
- Open the PNG to ICO tool.
- Upload your PNG image.
- Choose the icon sizes you want bundled in, then download the multi-resolution .ico file.
Browse the full tools directory for more free, browser-based image tools.
You might also need
If you’re building a website favicon rather than a desktop app icon, our Favicon Generator turns one image into a full favicon.ico plus every PNG size modern browsers and phones expect, with the HTML to paste in.
Frequently asked questions
Is there a free PNG to ICO converter that doesn’t need an account?
Yes. Our PNG to ICO tool and all three alternatives here convert files without requiring signup.
Why does an ICO file need multiple sizes?
Windows uses different icon sizes in different places — small ones in the taskbar, larger ones on the desktop or in file explorer thumbnails. A multi-resolution .ico bundles several sizes into one file so the right one renders sharp wherever it’s displayed, per the ICO file format’s design.
What’s the difference between an ICO and a favicon?
A favicon is just an icon used specifically for a website, historically saved as favicon.ico in a site’s root folder. The ICO format itself is the same — a favicon is simply an ICO (or increasingly, a PNG or SVG) used in that particular context.
Final thought
For a one-off icon, pick the tool that gives you size control without a queue or a public results page — save the batch converters for when you’re actually processing more than one file.