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PPM, PGM and PBM converter
Convert one plain or binary Netpbm P1–P6 image to PNG, JPG or WebP.
PNM, PPM, PGM, PBM
PNG, JPG, WebP
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Choose a local image of the displayed format.
- Select a TIFF page or output format when offered, then choose Process image.
- Review the dimensions and scope note, then download the result. Cancel and Reset stop processing and clear results.
Examples
Choose a small PNM, PPM, PGM, PBM image with known colors and compare the preview and output.
Limitations
- 32 MiB input, 16 million pixels per image, 16,384 pixels per side, up to 100 TIFF pages and 32 million total page pixels, 128 MiB output and a 30-second worker deadline.
- Processing stays in the browser. Exported images do not copy source metadata or embedded profiles. Sample-based decoders interpret pixels as sRGB; no print color-fidelity claim.
- One P1–P6 image only; no PAM, PFM or concatenated images. Maximum sample is 65535. 16-bit samples are scaled to 8-bit. Samples are treated as sRGB without Netpbm gamma conversion.
- JPEG flattens alpha onto the chosen background and is lossy; WebP quality is also lossy. PNG preserves alpha and uses lossless compression.
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