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Prompt

What should I use to convert a lot of PNGs to WebP quickly?

Technology / CDN & Edge Infrastructure1 observationLast seen Nov 3, 2026

Latest observation

Nov 3, 2026OpenAI APIWeb search: off

For lots of PNGs, the fastest practical options are:

Best choice: cwebp + parallel processing

  • cwebp is the official WebP encoder from Google.
  • It’s fast, reliable, and gives good control over quality.

Example:

cwebp input.png -q 80 -o output.webp

To convert many files quickly, run it in parallel:

macOS/Linux

find . -name "*.png" -print0 | xargs -0 -P 8 -I{} sh -c 'cwebp "$1" -q 80 -o "${1%.png}.webp"' _ {}

Or with GNU parallel:

parallel 'cwebp {} -q 80 -o {.}.webp' ::: *.png

If you want simple batch conversion

  • ImageMagick can do it, but it’s usually slower than cwebp.
  • Good for convenience, not speed.

If you want GUI tools

  • XnConvert
  • IrfanView (Windows)
  • Squoosh for a few files, not huge batches

Recommendation

If your priority is speed, use:

  • cwebp
  • plus xargs -P or parallel for multi-core conversion

If you want, I can give you:

  1. a Windows, macOS, or Linux batch command, or
  2. a script that preserves folder structure while converting.

Brands

CwebpGoogleImagemagickXnconvertIrfanviewSquooshXargsParallel

Observation history

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