Can I convert PNG to PPM / PNM on iPhone, Android, Mac or Windows?

Yes. ConvertPixels works in Safari, Chrome, Edge and Firefox on any device, so you can convert PNG to PPM / PNM on your phone or computer without installing an app.

Is there a free PNG to PPM converter with no sign-up?

Yes, this one. Converting PNG to PPM on ConvertPixels is free, with no sign-up, no watermark and no daily cap. Convert up to 30 files per batch, each up to 50 MB.

Can I convert PNG to PPM without losing quality?

Yes. PPM is a lossless format, so your converted file is pixel-for-pixel the same as the PNG. (It can't add back detail the original never had.)

Does PPM keep the transparent background of my PNG?

No - PPM has no transparency, so see-through areas get a solid fill. That's white unless you pick another background color in the options.

Can I batch convert PNG to PPM?

Yes. Add up to 30 PNG files and convert them in one batch. You can even choose a different output format for individual files, then download them separately or together as a ZIP.

Is it safe to upload PNG files to ConvertPixels?

Yes. Uploads use an encrypted connection and are processed automatically - nobody views them. Your originals are deleted straight after conversion and the results within an hour, or instantly if you click "Delete from server now".

Convert

PNG to PPM / PNM Converter

Convert PNG images to PPM / PNM online in seconds - free, with no sign-up and no watermark. Batch convert up to 30 files and download them together as a ZIP.

Free
No sign-up
No watermark
Private by design

Choose filesor drag and drop files hereUp to 30 files · 50 MB each

Image Converter

How to use it

1
Drop your PNG files onto the converter
2
Press Convert to turn them into PPM / PNM
3
Download your PPM / PNM images one by one or as a ZIP

PNG to PPM / PNM

Why convert PNG to PPM?

PNG and PPM are both lossless formats. PPM is the usual choice for simple uncompressed images for scientific and developer tools. PNG can have a transparent background, PPM can't.

Where PPM works best

PPM is ideal for simple uncompressed images for scientific and developer tools. Converting gives you a file that works in the apps and websites that ask for PPM.

PNG vs PPM / PNM: what's the difference?

Property	PNG	PPM / PNM
Compression type	Lossless (exact pixels, larger files)	Lossless (exact pixels, larger files)
Transparent background	Yes	No
Animation	No	No
Where it opens	All browsers and devices	None
Used for	Logos, screenshots, graphics, images with text or transparency	Simple uncompressed images for scientific and developer tools

What is a PNG file?

PNG (Portable Network Graphics) is a lossless image format created in 1996 as a patent-free replacement for GIF. It stores every pixel exactly, so text, logos and sharp edges stay perfectly crisp however often you save the file.

PNG supports full transparency, which makes it the standard format for logos, icons, screenshots and graphics placed on top of other designs. For photos, though, PNG files are several times larger than JPG.

How to open a PNG file

PNG opens everywhere: Windows Photos, Mac Preview, iPhone and Android galleries and every web browser. Editors like Photoshop, GIMP, Figma and Canva keep the transparency intact.

Extension: .png
Compression: Lossless
Transparency: Yes
Best for: Logos, screenshots, graphics, text

What is a PPM / PNM file?

PPM, PGM, PBM and PNM are the Netpbm formats: deliberately simple, uncompressed image files from the 1980s. They store pixels as plain numbers, which makes them easy for programs to read and write.

You'll mostly meet them in scientific computing, image-processing scripts and developer tools - rarely in everyday use.

How to open a PPM / PNM file

GIMP, IrfanView, XnView and Photoshop open Netpbm files, as do Linux image viewers. Windows Photos and browsers can't, so convert to PNG for a lossless, much smaller copy.

Extensions: .ppm, .pgm, .pbm, .pnm
Compression: None
Best for: Scientific and developer tools
Family: Netpbm