Convert PPM to QOI

Convert PPM files to QOI 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)

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How to convert PPM to QOI

  1. Drop your .ppm files above, or click Upload Files. You can add many files at once.
  2. QOI is already selected as the output. Open the settings (gear icon) to fine-tune the result.
  3. Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
  4. Download your .qoi files as soon as each one finishes.

What to know about PPM to QOI conversion

  • QOI is best for very fast lossless encoding in apps and games, and opens in specialized viewers and some image editors.

PPM vs QOI

FeaturePPM (Netpbm Portable Pixmap)QOI (Quite OK Image Format)
Compressionuncompressedlossless
TransparencyNoYes
AnimationNoNo
Best forimage processing pipelines and scientific codevery fast lossless encoding in apps and games
Opens inGIMP, ImageMagick and Netpbm toolsspecialized viewers and some image editors

PPM (Netpbm Portable Pixmap): A minimal uncompressed color image format from the Netpbm toolkit, popular in image processing pipelines.

QOI (Quite OK Image Format): A fast, simple lossless image format with compression comparable to PNG and much faster encoding.

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 PPM to QOI 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 PPM 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.

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