Convert PEF to ICO
Free PEF to ICO converter. Usually a smaller file. No signup, and your files are deleted after 1 hour.
Image Converter
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Maximum file size: 100 MB per file
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How to convert PEF to ICO
Quick answer: To convert PEF to ICO: upload your PEF file, choose ICO as the output format, click Convert and download the result. It takes a few seconds, needs no account, and your files are deleted from the server after 1 hour.
- Upload your PEF file by clicking the upload area, dragging it in, or pasting an image URL.
- Select ICO as the output format.
- Click Convert and wait a few seconds.
- Download your ICO file, or download several files at once as a ZIP.
What changes when you convert PEF to ICO
- PEF has no transparency, so the picture looks the same; the extra transparency support in ICO simply stays unused.
- Neither format throws away detail in this conversion, so the pixels are preserved.
- Photos usually get smaller when saved as ICO.
- The icon file contains several sizes (from 16 to 256 px) so it works as a favicon and as a Windows icon.
- The RAW data is developed with standard settings into a normal image.
PEF vs ICO at a glance
| Feature | PEF | ICO |
|---|---|---|
| Full name | Pentax PEF RAW file | ICO (Windows Icon) |
| Introduced | – | 1985 |
| Compression | Lossless | Lossless |
| Transparency | No | Yes |
| Animation | No | No |
| Best for | Professional photo editing with maximum detail | Website favicons and Windows app icons |
| Compatibility | Opens only in camera software and photo editors; browsers and phones cannot display it. | Used for favicons and Windows icons; most photo viewers do not open it. |
When to choose ICO instead of PEF
Choose ICO for website favicons and Windows app icons. Its main limit: it only suits small icon sizes.
Stay with PEF if you need professional photo editing with maximum detail.
Related conversions
PEF to ICO FAQ
How do I convert PEF to ICO?
Upload your PEF file, select ICO as the output format and click Convert. When it finishes, download the ICO file. No software or account is needed, and your files are deleted after 1 hour.
Does converting PEF to ICO reduce quality?
No. Both formats keep the full pixel data, so the converted image looks identical.
Is transparency kept when converting PEF to ICO?
PEF has no transparency, so there is nothing to keep; the ICO looks the same as your original.
Will the ICO file be smaller than the PEF?
For photos, usually yes. ICO compresses images more efficiently than PEF.
Where can I open a ICO file?
Used for favicons and Windows icons; most photo viewers do not open it.
Is it free and safe to convert PEF to ICO here?
Yes. It is free for up to 20 files per day and 100 MB per file, with no sign-up. Files are processed on our server, never shared, and deleted automatically after 1 hour.
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