Bulk Image Compressor — Free & Private

Compress many JPG, PNG and WebP images at once in your browser — free, no signup. Set the quality, see the size you saved, and download every image as a ZIP. Nothing is uploaded.

Free — no signup, runs in your browser

Compress as many images as you like on your device — nothing is uploaded.

100% private. Compression runs in your browser — your images are never uploaded.

Quick answer

BatchSet's bulk image compressor reduces the file size of many JPG, PNG and WebP images at once, free and right in your browser — no signup, no upload and no watermark. Use the quality slider to balance size against clarity, see how much each image and the whole batch saved, then download everything as a ZIP. For an exact size in kilobytes, use the compress to 20, 50, 100 or 200 KB pages, which are free and run in the browser the same way.

How to use the Bulk Image Compressor

Three quick steps — free, private, right in your browser.

1

Add your images

Drag in as many JPG, PNG or WebP files as you like — or click to browse. They stay on your device.

2

Set the quality

Pick one quality level and output format; it's applied to every image in the batch.

3

Compress & download

Compress them all, see how much each and the whole batch saved, then download every image as a ZIP.

Features

  • Compress many images at once
  • JPG, PNG & WebP
  • Quality slider (10–100%)
  • Per-file & total size saved
  • Download all as ZIP
  • 100% private, no upload

Use Cases

  • Shrink a folder of photos for email
  • Optimize product images in bulk
  • Faster-loading web pages
  • Meet upload size limits

How the Bulk Image Compressor compares

FeatureBatchSetTinyPNGSquoosh
Compress JPG / PNG / WebPFreeFreeFree
Quality controlYes (slider)AutomaticYes
Browser-based (no upload)YesNo (server upload)Yes
Batch compressYes (many files)Up to 20 files (web)Single image
PrivacyNo uploadUploads fileNo upload
SignupNoNoNo
TinyPNG's free web tool caps at 20 files / 5 MB per batch. Verified August 2026; check providers for current terms.

Frequently asked questions

Can I compress multiple images at once?+

Yes. Add as many JPG, PNG or WebP files as you like, set one quality level, compress the whole batch and download them all as a ZIP — free, with no signup.

Is the bulk image compressor free?+

Yes. Compressing JPG, PNG and WebP images is 100% free with no signup and no watermark — everything runs in your browser.

Are my images uploaded to a server?+

No. Compression happens entirely on your device, so your files never leave your computer. It's completely private.

How much smaller will my images get?+

It depends on the image and quality setting — photos often shrink 60–80%. The tool shows the before/after size and percentage saved for each file and for the whole batch, so you can pick the right balance.

Why didn't my PNG get smaller?+

PNG is lossless, so the quality slider can't shrink it much. For real savings on a PNG, convert it to WebP or JPG.

Can I compress to an exact file size, like 100 KB?+

Yes, free. The compress-to-KB tool finds the quality that hits a size like 100 KB, in your browser. This compressor uses a quality slider instead, which is ideal for simply making an image smaller.

Does compressing reduce quality?+

Lossy formats (JPG, WebP) trade a little quality for a much smaller file — you control how much with the slider. At 70–85% most images look identical to the original.

Related free tools

See also

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