PGM to APNG converter
Convert PGM to APNG in seconds, free and unlimited. No upload, no sign-up, no watermark: your image never leaves your device.
Last updated
Quick answer: To convert PGM to APNG, add the PGM file to the iHateFiles PGM to APNG converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. APNG supports transparency, which PGM never had. That helps if you plan to cut the background out afterwards.
Should you convert PGM to APNG?
A safe conversion: PGM and APNG are both lossless, so this is a change of container rather than a change to the picture.
Nothing is discarded
PGM and APNG are both lossless, so every pixel survives the move intact. Convert back and forth as often as you like; the image does not degrade.
APNG supports transparency, but there is none to recover
APNG can store an alpha channel and PGM cannot, so nothing is gained here automatically. The result is fully opaque. Transparency has to be cut in an editor; no converter can work out which parts of a PGM were meant to be see-through.
PGM and APNG side by side
| PGM | APNG | |
|---|---|---|
| Compression | Lossless | Lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Written here | Yes | Yes |
What usually goes wrong
About the PGM. Converting a colour image to PGM throws the colour away for good. Keep the original if you might want it back.
About the APNG. Converting a single still image to APNG just gives you a PNG, because there is nothing to animate.
How to convert PGM to APNG
- Add your PGM file. It is read from your disk and stays there.
- Check the settings. The output format is already set to APNG.
- Press convert and the APNG file is saved back to your device.
Questions
How do I convert PGM to APNG?
Open this page, add your PGM file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this PGM to APNG converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to APNG lose quality?
APNG is lossless, so this step throws nothing away. If the original was already a lossy format, the damage it did cannot be undone, but nothing further is lost.
Can I convert several PGM files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.