Convert PPM files to WEBP free in your browser — no signup, no install, and the file is never uploaded to a server. WEBP compresses further, so the file gets noticeably smaller.
Add your PPM file
Drag the PPM file onto the drop area above, or click it to pick a file from your device. You can add several files at once.
Confirm WEBP as the output
WEBP is already selected as the output format on this page. A quality slider and width/height fields appear — lowering quality shrinks the file.
Run the conversion
Press the convert button. A single image is usually done before you finish reading this sentence.
Download the WEBP file
When it finishes, download the WEBP file. Converting multiple files gives you the option to download them together as a ZIP.
An extremely simple format consisting of a header followed by raw RGB values. It applies no compression so files are large, but its simplicity makes it popular in research and teaching.
Google's image format, typically 25-35% smaller than JPEG at equal quality. It supports lossy, lossless, transparency, and animation, though some older software cannot open it.
Yes. PPM to WEBP conversion is completely free with no signup, no watermark, and no daily limit on the free plan for ordinary use.
No. The conversion runs entirely inside your browser using WebAssembly, so the PPM file never leaves your device. That is also why it works without an internet connection once the page has loaded.
WEBP uses lossy compression, so some detail is discarded. At high quality settings the difference is usually invisible, and the file becomes far smaller.
WEBP is a newer format. Current browsers and phones handle it, but older desktop software may not — keep the original PPM if you have to send it to someone on an old machine.
The free plan handles files up to 200MB. Because processing happens on your own device, very large files depend on your computer's memory rather than a server quota.
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What each file format is, what it is used for, and which formats it can be converted to.
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