Upload a square PNG
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Image tools
PNG to ICO Converter
Free online PNG to ICO converter
Source image
PNG ICO Local processingConverted preview
Press Ctrl or Command and Enter to run the tool.
About this tool
About this tool
PNG to ICO Converter draws the source image at each requested size and builds a valid ICO container with PNG-compressed entries, the modern icon format used by browsers and Windows. A multi-size option generates 16, 32, 48, 64, 128, and 256 pixel entries in one file. All rendering is local.
Create real .ico icon files from PNG images without uploading them. The tool renders your image at every standard icon size and packs the results into a single ICO container, ready for browser favicons, Windows shortcuts, and desktop applications.
Built for daily work
- Create a favicon for a website or web app.
- Generate icons for Windows shortcuts and folders.
- Build app launcher icons from a single design.
- Produce multi-size icon sets for desktop software.
How to use this tool
How to use this tool
Choose sizes
Keep the multi-size option for favicons and app icons, or pick a single size.
Generate and download
Run the conversion and download the .ico file, then use it as a favicon or icon.
Key features
Key features
True multi-size ICO
The output contains separate entries from 16 to 256 pixels so every context picks the right size.
Transparency preserved
PNG-compressed ICO entries keep alpha, so rounded icons look correct everywhere.
Standard container format
The generated file is a valid ICO accepted by browsers, Windows, and most icon tools.
Local generation
Rendering and packing happen entirely in your browser.
Practical use cases
Practical use cases
- Create a favicon for a website or web app.
- Generate icons for Windows shortcuts and folders.
- Build app launcher icons from a single design.
- Produce multi-size icon sets for desktop software.
- Make a browser tab icon with a transparent background.
Private by default
For local tools, input is processed in your browser and is not sent to application analytics.
Data processing noticeTechnical details
Technical details
ProcessingLocal browser processing
OutputConverted image file, downloaded directly
Maximum local file25 MB per image
Limitations and important notes
Limitations and important notes
- Very detailed designs become hard to read at 16 pixels; simplify the artwork first.
- Only the first frame of an animated PNG is used.
- The tool outputs ICO only, not Apple ICNS files.
Frequently asked questions
Frequently asked questions
A single .ico file that contains several PNG-compressed images, one for each standard size. Windows and browsers pick the best match automatically.
The ICO format uses 0 to represent 256 pixels in the size fields. The file still contains the full 256 x 256 image.
Yes. Save the ICO, reference it from your site, and browsers will use the appropriate size.
No. The icon is rendered and packed locally in your browser.
Related guides and solutions
Related guides and solutions
Create a favicon from your PNG in seconds
A good favicon needs several sizes so browsers, bookmarks, and high-DPI screens all look sharp. This workflow turns one square PNG into a single multi-size ICO file, generated locally in your browser.
Learn moreHow to convert PNG to JPG without uploading your images
A practical guide to PNG to JPG conversion with the [PNG to JPG converter](tool:png-to-jpg): format differences, transparency handling, quality settings, and why converting locally is the private choice.
Learn moreWhat local browser processing means for online tools
A transparent explanation of local tool processing, temporary browser memory, local storage, downloads, analytics boundaries, and cases that require remote services.
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