Convert Always

Compress images

Reduce image weight without changing the pixel dimensions. You control the quality level, so you can find the point where the file is small and the picture still looks right.

Compress images

Re-encode with a quality slider to cut weight without resizing.

Runs in your browser — files are never uploaded.

Where the sweet spot usually sits

For photographs, quality 75-85 removes most of the file size and almost none of the visible detail. Below 60, artefacts start appearing around edges and in flat areas such as skies.

Images with text, screenshots and flat graphics behave differently — they show artefacts much earlier, and are usually better served by a lossless format than by aggressive compression.

Compression and page speed

Images are the largest payload on most web pages. Halving their weight is typically the single biggest Core Web Vitals win available, ahead of any JavaScript optimisation.

Frequently asked questions

Is compression reversible?

No. Lossy re-encoding is permanent, so keep your original.

Does it change the dimensions?

No — only the encoding quality changes. Use the resize tool to change dimensions.

Which format compresses best?

WebP and AVIF, typically 25-50% smaller than JPEG at the same visual quality.

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