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Bulk Image Compressor

  • Browser-based
  • No signup
  • Stays on your device
  • Your file is processed in your browser and is not uploaded to our servers.

Upload up to 20 JPG, PNG, WebP, or GIF images and compress them in your browser. Choose compression level and format, then download a ZIP archive.

100% Client-Side

Your data never leaves your computer.

How to use this tool

1. Select multiple JPG, PNG, WebP, or GIF files. 2. Pick a compression level and output format. 3. Click Compress all. 4. Review per-file size savings in the results table. 5. Download the ZIP archive with every compressed image.

Worked example

Example: eight product JPGs totaling 18 MB compressed at medium quality might shrink to about 4 MB in one ZIP—ready to upload to a storefront or email.

When to use this

  • Preparing a product catalog folder before upload.
  • Shrinking an entire blog image directory for deploy.
  • Uniform compression across team headshots.
  • ZIP download of optimized assets for a client handoff.

Common examples

  • Eight 3–5 MB product photos → one ZIP of WebP files under 500 KB each for Shopify.
  • Blog image folder before static deploy → batch compress to cut total page weight.
  • Team headshots for intranet → uniform compression level across 20 portraits.

What people search for

  • bulk image compressor
  • compress multiple images at once
  • batch image compression online
  • compress images zip download
  • bulk resize and compress

Common mistakes

  • Mixing PNG logos and photo JPEGs at one aggressive quality setting.
  • Not checking a few samples before processing hundreds of files.
  • Forgetting transparency requirements on icon PNGs.
  • Skipping resize when dimensions are the main weight problem.
  • bulk resize then compress to WebP
  • compress images to target KB each
  • convert bulk PNG to JPEG in same pass
  • rename and compress folder for CDN upload
  • zip compressed images for client delivery

How it works

Upload multiple JPG, PNG, WebP, or GIF images and compress them in your browser. Choose a compression level and output format, then download results as a ZIP archive.

Limitations

Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.

Privacy and file handling

Your data is processed in your browser and is not uploaded to our server.

Learn how formats and terms differ before you convert or calculate.

Frequently asked questions

Is the Bulk Image Compressor free to use?

Yes. Utilnivo tools are free to use and do not require an account.

Are my inputs stored?

Utilnivo does not require an account. See the privacy note on this page for how your data is processed for this tool.

How do I get started with Bulk Image Compressor?

Open the tool on this page, enter your inputs, and use the on-screen controls. No account is required.

Part of these workflows

This tool is one step in a longer job. Jump straight to your step or open the full workflow guide.

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