Compress up to 100 images at once without uploading them anywhere

Pixnelo — Mon, 02 Nov 2026 07:24:50 +0000

Product photos, screenshots and phone pictures are often much bigger than they need to be. Most online compressors work by uploading your files to a server. If you would rather keep the files on your own device, a browser-based tool can do the same job locally.

Disclosure: I run the site mentioned below.

How it works

Open Pixnelo's image compressor. No sign-up is needed.
Drop in your photos, or paste them from the clipboard. You can add up to 100 at a time.
Keep the original format, or set an exact target size such as 100 KB.
Download the files one by one, or grab everything as a ZIP.

It supports JPG, PNG, WebP and AVIF, and the images are processed in your browser instead of being sent to a server.

Things to know

Images that are already well compressed may not get smaller. The tool shows the size change for each file, so you can see what happened.
PNG is a lossless format, so hitting a small target usually means reducing the pixel dimensions first.
Always check the result before you upload it somewhere that has a strict size limit.

If you need a smaller exact size for a form, the target-size page does that in one step.

DEV Community: Pixnelo

Compress up to 100 images at once without uploading them anywhere

How it works

Things to know