PPM to PNG Converter
Convert Netpbm files — PPM (colour), PGM (grayscale), PBM (bitmap) and PAM, binary or ASCII, 8 or 16-bit — to PNG so they open anywhere.
PPM to PNG Converter
🔒 Processed on your device with the browser's own image engine — nothing is uploaded, and re-encoding strips EXIF metadata such as GPS location.
Drop files on the left — or tap a sample above.
- PPM / PGM / PBMNone (binary or ASCII text) · 1-bit (PBM), gray (PGM) or RGB (PPM), up to 16 bits per sample · alpha: Only in PAM (P7)
- PNGLossless (Deflate) · 1–16 bits per channel, palette or true colour · alpha: Full 8-bit alpha
- TipWriting a ray tracer or CV assignment? Drop the whole output folder in — every frame converts in one go.
- PrivacyFiles never leave your device; re-encoding drops EXIF/GPS metadata.
Format facts checked October 2026.
Runs in your browser — nothing you enter is uploaded or stored.
Scratchpad auto-saved
How it works — in four simple steps
No signup and nothing to install — it all runs in your browser.
Add PPM / PGM / PBM files
Drop, choose or paste them — or press the sample preset above.
Set the PNG options
Writing a ray tracer or CV assignment? Drop the whole output folder in — every frame converts in one go.
Convert
Press Convert — results appear with a before/after slider, sizes and format details.
Download
Save each file or everything as a ZIP.
Writing a ray tracer or CV assignment? Drop the whole output folder in — every frame converts in one go.
Features
Lossless output
Every pixel and the alpha channel stored exactly.
Built-in PPM / PGM / PBM decoder
Reads ASCII and binary P1–P7, including 16-bit samples.
Batch + before/after
Convert many files at once, compare with the slider, download individually or as a ZIP.
Nothing uploaded
Decoding and encoding run in your browser tab; the files never leave your device.
About the PPM to PNG Converter
Netpbm formats are what computer-vision code, ray tracers, image-processing courses and scientific tools write, because they're trivial to produce — a short header followed by pixels. Almost nothing else can display them, so PNG is the way to view and share the results.
Your Netpbm file is read by our own decoder: P1–P6 in ASCII or binary, PAM (P7) with or without alpha, comments in headers, and maxval up to 65,535 (16-bit samples are scaled to 8 bits).
The PNG is written by your browser's own encoder, which is lossless — every decoded pixel, including the alpha channel, is stored exactly.
PPM / PGM / PBM vs PNG compared
| Property | PPM / PGM / PBM | PNG |
|---|---|---|
| Origin / standard | Netpbm (Jef Poskanzer, 1988) | W3C 1996 · ISO/IEC 15948 |
| Compression | None (binary or ASCII text) | Lossless (Deflate) |
| Transparency | Only in PAM (P7) | Full 8-bit alpha |
| Colour depth | 1-bit (PBM), gray (PGM) or RGB (PPM), up to 16 bits per sample | 1–16 bits per channel, palette or true colour |
| Animation / pages | No | APNG extension |
| Maximum size | No fixed limit | 2³¹ − 1 px (practically memory-bound) |
| Typical use | Computer vision, graphics courses, scientific tools | Screenshots, UI, logos, web graphics |
| Opens in | GIMP, ImageMagick, IrfanView, Photoshop — not browsers | Everything |
Measured on our sample
What this page produced from its built-in sample (a 960 × 640 binary PPM), with each preset:
| Setting | Input | Output | Notes |
|---|---|---|---|
| Default settings | 1.76 MB · 960 × 640 | 557.0 KB · 960 × 640 |
Measured with this page’s converter in Chromium (October 2026). Press the sample preset above to reproduce; your own images will differ with their content.
Things to know
- 16-bit samples. Files with maxval above 255 are scaled to 8 bits per channel in the PNG.
- PBM is inverted. In PBM, 1 means black and 0 means white — the opposite of most formats. The converter handles it.