Convert PNG to ICO Online
Create ICO files from PNG sources with a free online converter. The conversion runs on the server, batches are supported, and the server limit is 100 MB per file. Keep the original file while you review the converted copy. The tool works without a plugin or extension.
Convert .PNG to .ICO
Select a file to begin. Processing details and limits are listed below.
How to convert PNG to ICO
- 1
Add your PNG source
Add one or more PNG files to the queue. The uploader keeps batch items separate.
- 2
Choose ICO settings
Set the available quality or format options, or keep the defaults for a first pass.
- 3
Create the ICO file
Run the queue and download the ICO files individually or together as a ZIP.
Portable Network Graphics vs Icon File
| Spec | Portable Network Graphics | Icon File |
|---|---|---|
| MIME type | image/png | image/x-icon |
| Format type | image | image |
| Standard | ISO/IEC 15948 | Pending review |
| First release | 1996 | Pending review |
| Browser support | All current major browsers | Pending review |
| Contents | Lossless DEFLATE-compressed raster image with optional alpha transparency and animation through APNG. | Multi-resolution icon format for favicons. |
About Portable Network Graphics
Pixel-perfect lossless output, clean alpha transparency, and strong support for screenshots, logos, and line art. Photographic images are usually much larger than JPEG or WebP; metadata and animation support vary by viewer.
Format referenceAbout Icon File
Multi-resolution icon format for favicons.
Why convert PNG to ICO?
- A separate output avoids overwriting the only copy of the original image.
- A ICO copy is useful when a website, form, printer, or colleague requires a specific image container.
- Keeping the PNG original gives you a reference while the ICO version is used for delivery.
- Compatibility is often the deciding factor when the same image must open on several devices.
Will quality change?
ICO is a lossless image container, but it is not a time machine: compression artifacts already present in the PNG source remain. The original source remains the best reference for comparison.
Processing and limits
- Processing
- Server-side
- Engine
- Sharp and ImageMagick
- Maximum size
- 100 MB per file on the server.
- Batch support
- Yes, multiple files can be queued; completed results can be downloaded as a ZIP.
- Quality controls
- Options can adjust output dimensions.
The file is processed on the server because the conversion requires a server-side engine or a utility operation.
- Photographic images are usually much larger than JPEG or WebP; metadata and animation support vary by viewer.
- The output is re-encoded, so keep the original source as the archive copy.
- Browser-first paths depend on local codec support; unsupported cases fall back to the server.
Platform compatibility
The output is a ICO file. Use an application or device that accepts that format, and test the result on the destination platform if compatibility is critical.
When not to convert
- Do not overwrite the source; keep both versions until the output has been approved.
- Avoid repeated lossy conversions when quality matters; start from the highest-quality source available.
- If the file contains sensitive data, review the processing model before uploading it to a server.
Frequently asked questions
- What is the easiest way to convert PNG to ICO?
- Upload a PNG file, choose the available ICO options, run the conversion, and download the result. The tool is free, supports batches, and accepts server uploads up to 100 MB.
- Is Convert PNG to ICO free?
- It is free, requires no account, and adds no watermark. Server uploads are limited to 100 MB per file, and browser-first paths are limited by device memory.
- What happens to quality?
- ICO is a lossless image container, but it is not a time machine: compression artifacts already present in the PNG source remain. The original source remains the best reference for comparison.
- Where is the file processed?
- Yes. This conversion uses a server-side engine, so the file is uploaded over HTTPS, processed in an isolated request, and removed after the result is produced.
- Can I convert several files at once?
- Queue multiple files, run them together, and download the finished results as a ZIP. Each server file is limited to 100 MB, and large batches may take longer.
- What can go wrong?
- Open the downloaded ICO file in the application or database you plan to use, check the structure against the source, and keep the original until the output is approved.