Convert PNG to PNM
Convert PNG files to PNM locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert PNG to PNM
- Drop your .png files above, or click Upload Files. You can add many files at once.
- PNM is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .pnm files as soon as each one finishes.
What to know about PNG to PNM conversion
- PNM has no transparency, so transparent areas of the PNG are filled with white.
- PNM is best for image processing pipelines and scientific code, and opens in GIMP, ImageMagick and Netpbm tools.
PNG vs PNM
| Feature | PNG (Portable Network Graphics) | PNM (Netpbm Portable Anymap) |
|---|---|---|
| Compression | lossless | uncompressed |
| Transparency | Yes | No |
| Animation | No | No |
| Best for | screenshots, logos and graphics with sharp edges or transparency | image processing pipelines and scientific code |
| Opens in | every browser, operating system and image editor | GIMP, ImageMagick and Netpbm tools |
PNG (Portable Network Graphics): A lossless image format supporting transparency, ideal for web graphics, screenshots, and logos.
PNM (Netpbm Portable Anymap): The generic Netpbm format family (PBM, PGM, PPM) for simple uncompressed bitmaps, graymaps and pixmaps.
Conversion options
- Resize by width, height or both (aspect ratio is preserved)
- Filters: grayscale, sepia, blur and sharpen
- Custom output file name
Frequently asked questions
Is it safe to convert PNG to PNM here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several PNG files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert PNM to PNG.
Convert PNG to other formats
- PNG to JPG
- PNG to PDF
- PNG to WEBP
- PNG to GIF
- PNG to SVG
- PNG to AVIF
- PNG to ICO
- PNG to TIFF
- PNG to BMP
- PNG to JXL
- PNG to PSD
- PNG to TGA
Convert other formats to PNM
- JPG to PNM
- PDF to PNM
- WEBP to PNM
- HEIC to PNM
- GIF to PNM
- SVG to PNM
- AVIF to PNM
- ICO to PNM
- TIFF to PNM
- BMP to PNM
- JXL to PNM
- PSD to PNM
See every PNG converter and PNM converter, or browse the full converter directory.