How to compress images without losing quality

Strictly speaking, most image compression does lose quality — the trick is losing only the detail your eye can't detect. Formats like JPEG, WebP and AVIF are lossy: they throw away fine information the human visual system barely registers, which is how a photo can shrink to a fraction of its size and still look identical on screen.

So "without losing quality" is really shorthand for without visible loss. The goal is to find a quality level where the file is far smaller but no one can tell the difference. PNG is the exception — it's lossless, rebuilding every pixel exactly, but it only compresses flat graphics well, not photographs.

The EditItAll image tools let you compress and re-export locally, with a quality control you can nudge until the size and the look are both right:

• Open the image compressor and drop your photos in — JPG, PNG and WebP all work, and you can load several at once.
• Set the quality. Somewhere around 75–85% is usually indistinguishable from the original for photos, while cutting the file size dramatically.
• Preview, then export and download. For JPEGs specifically, the JPG compressor is tuned for exactly this trade-off.

Everything runs on your device — you can go offline after the page loads and it still works, which is the plainest proof your images aren't being uploaded anywhere.

The format matters as much as the quality slider — matching it to the content is often the bigger win:

• Photos for the web: WebP and AVIF reach the same visible quality as JPEG at a noticeably smaller size, so they make the best default for websites.
• Photos that must open anywhere: JPEG is still the safest bet, and compressing a JPG at high quality keeps it clean.
• Flat graphics — logos, icons, screenshots: PNG stays lossless and crisp. For logos and icons that must scale to any size, an SVG is smaller still and never blurs.

Not sure which to choose? The image formats guide breaks down when to use each one.

Because the work is local, there's no per-file upload wait — you can drop in a whole folder of images and export them together, which makes prepping a gallery or a set of product shots quick. There's no watermark and no account. Browse all the compression tools to find the one that fits your file type.

One caution worth repeating: lossy compression is one-way, and it stacks. Re-compressing an already-compressed JPEG degrades it a little more each time. Keep an untouched original, always compress from that, and you'll have a clean copy to return to.