Compress images

Shrink file size with quality control — Web Worker powered, private, and fast.

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FAQ

How much smaller will my file get?
It depends on content and format. The slider shows a rough estimate; hit Compress to see real savings.
Is compression lossy?
JPEG and WebP use lossy compression at the quality you choose. PNG stays lossless but is still re-encoded.
Do files leave my device?
Compression runs in a web worker in your browser — nothing is uploaded to LaunchGPT.
What does max dimension do?
It scales down the longest side before compression, which often dramatically reduces size for huge photos.
Can I keep the original format?
Choose Original in the format dropdown to let the library keep the input type while optimizing.