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Convertorium

Compress image

Drop in a photo, a screenshot or a whole batch and each one comes back noticeably smaller — there are no sliders to set, just strong compression applied for you. Handy for email attachments, faster web pages or staying under an upload limit. Everything happens in your browser, so the originals never leave your device and nothing is stored.

Drag & drop images here, or click to chooseJPG, PNG or WebP, up to 200 MB each — compressed in your browser

Your images are compressed in your browser and never uploaded. Nothing is stored.

How it works

  1. 1

    Add one image or a whole batch — JPG, PNG or WebP

  2. 2

    Each image is compressed automatically, with the best method for its format

  3. 3

    Download each smaller image, or all of them as a ZIP

Why choose us

  • Private by design — your images are compressed in the browser and never uploaded to a server
  • Optimal compression applied for you — JPG, PNG and WebP each get the codec that shrinks them best, with no settings to get wrong
  • Compress a whole batch at once, then download the files individually or as a single ZIP
  • You see the before and after size for each file, and the result is never larger than the original
  • Free, no sign-up, no watermark

Frequently asked questions

Are my images uploaded when I compress them?

No. Compression runs entirely in your browser, so your images stay on your device and are never sent to or stored on our server.

Which formats can I compress?

JPG, PNG and WebP. Each image is re-encoded in the same format, so you keep the type you started with.

Can I compress several images at once?

Yes. Add a whole batch and each one is compressed in turn — then download them one by one or all together as a ZIP.

How much smaller will my images get?

It depends on the image. Photos and detailed screenshots usually shrink a lot; simple graphics with flat colours save less. The strongest compression that still looks right is applied for you, so there is nothing to tune.

Will compressing reduce the quality?

The compression is lossy, but it is tuned to stay visually close to the original, so the difference is normally hard to see. If an image can't be made smaller without harming it, you get the original back unchanged.

Is compressing images free?

Yes — completely free, with no account, no watermark and no limit on how often you use it.

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