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Bulk Image Compressor

Compress many images at once and download them all as a single ZIP — free and completely private.

Runs entirely in your browser — your files are never uploaded to a server.

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This tool processes your files entirely in your browser. Nothing is uploaded to our servers.

How It Works

1. Choose Your File

Drag & drop or select the file you want to work with.

2. Processed in Your Browser

Everything happens locally on your device — your file is never uploaded anywhere.

3. Download Your Result

Get your finished file instantly, ready to save or share.

About Bulk Image Compressor

Compressing images one at a time is fine for a single file, but genuinely tedious for a whole folder of product photos, a gallery, or a batch of screenshots that all need the same treatment.

This tool compresses multiple images in one pass rather than requiring you to process each file individually and re-download repeatedly — upload a batch, get back compressed versions of all of them.

Compression settings apply consistently across the whole batch, useful when you want uniform quality/size trade-offs across a set of images rather than manually tuning each one separately.

Frequently Asked Questions

How do I compress many images at once?

Drop in multiple JPG, PNG or WebP files, set one quality value from 10 to 100 (default 80) and click Compress All. Every image is compressed with that setting and delivered in a single ZIP download called compressed-images.zip, with the total size saved shown on screen.

Which image formats does the bulk compressor support, and what about PNG?

It supports JPG, PNG and WebP and keeps each file's original format. PNG files are re-saved losslessly, so savings are small; convert them to WebP first. Transparent areas in WebP files may be filled with white, so check those results.

Can I compress images to a specific size like 100 KB in bulk?

No. The tool applies one quality percentage to every image and has no target-file-size option, so results vary by image. Try a lower quality value, check the totals shown, and rerun if needed. Resizing the images smaller first also reduces size.

Are my images uploaded when I compress in bulk?

No. Compression and ZIP creation both happen in your browser, so your images never leave your device. The tool sets no file-count limit, but very large batches depend on your device's memory, so split huge sets into groups.

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