Which format compresses best?

WebP usually produces the smallest files at the same quality - typically 25 to 35 percent smaller than PNG or JPEG. Use PNG when you need lossless transparency.

Can I convert PNG to WebP?

Yes. Choose WebP as the output format to convert PNG or JPEG files to WebP, with an adjustable quality slider.

Yes - compression happens in your browser, so your files are never uploaded.

Image Compressor & Converter - Compress PNG, JPEG, WebP Free

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PNG, JPEG, WebP - up to 10 MB each

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Compress Images Without Wrecking Quality

Heavy images are the number-one cause of slow websites. Compressing and converting them to a modern format like WebP can cut file sizes by a third or more, improving load speed, Core Web Vitals, and SEO, with no visible quality loss. This tool does it instantly and in bulk, right in your browser.

Which format should I choose?

WebP - best overall for the web; smallest files at a given quality, supports transparency.

JPEG - great for photos without transparency; widely compatible.

PNG - lossless; use for logos and graphics that need crisp transparency.

Tips

For web images, a quality of 75-85% is usually indistinguishable from the original.

Set a max width (e.g. 1920px) so oversized photos are downscaled before compressing.

Compare the before/after sizes shown on each card to find your sweet spot.

Will PNG get smaller?

PNG is lossless, so re-encoding a PNG only helps a little. To really shrink a PNG, convert it to WebP - often a huge saving with no visible difference.