Bulk Image Compressor

Make hundreds of photos smaller at once — JPG, PNG and WebP, with no visible loss. All in one ZIP.

100% private — runs entirely in your browser. Your data is processed on your device and never sent to the internet.

Click to upload or drop many images

JPG, PNG, WebP, HEIC, AVIF, GIF, BMP or SVG — as many as you like. Nothing is uploaded.

About the bulk image compressor

Photos from a phone or a camera are big — often 3 to 10 MB each. That is too big for an email, too slow for a website, and too much for most upload forms.

This tool compresses a whole batch at once. Drop in your photos, press one button, and get them back in a ZIP, usually 60–90% smaller, looking the same to the eye. The result card for each image shows its size before and after.

How to use it

  • Click Click to upload, or drag a folder of photos onto the box
  • Set the quality — 75 is a good balance for most photos
  • Choose to keep each format, or turn everything into JPG or WebP
  • Optional: shrink large photos to 1920 px — the biggest saving of all
  • Press Compress them all, then Download all (ZIP)

How it makes files smaller

Three things reduce the size, and you control each one:

  • Quality — JPG and WebP throw away detail the eye does not notice. At 75–85 the difference is very hard to see; at 50 files are tiny but soft
  • Size — a 6000 px photo shown on a 1920 px screen wastes most of its pixels. Shrinking the longest side to 1920 px often cuts the file by another 70%
  • Format — WebP is about 30% smaller than JPG at the same look and works in every modern browser

PNG works differently: it is lossless, so the tool reduces the number of colours instead. That shrinks screenshots and graphics a lot, but for photos JPG or WebP will always be much smaller.

It never makes a file bigger

Some images are already well compressed. Re-saving them can make the file larger, not smaller. With "If a file would get bigger, keep the original" switched on (the default), those images are simply kept as they were — so the batch is never worse than what you started with.

Which settings to use

  • For a website: WebP, quality 75, longest side 1920 px
  • For email: JPG, quality 70, longest side 1920 px
  • To keep photos for printing: keep the format, quality 90, no resize
  • For screenshots: keep PNG, quality 60–80

Everything happens on your device

Your photos are compressed inside your browser:

  • Private — nothing is uploaded, so personal and client photos stay on your computer
  • Fast — no upload wait, even for hundreds of files
  • Free — no sign-up, no watermark, no file count limit

What people use it for

  • Making holiday photos small enough to share or back up
  • Speeding up a website by compressing every image
  • Getting product photos under a marketplace's size limit
  • Sending many photos by email without hitting the attachment limit
  • Saving space on a phone or laptop

Frequently asked questions

How much smaller will my images get?

Phone and camera photos usually get 60–90% smaller at quality 75, and more if you also shrink them to 1920 px. Images that are already compressed save less — and are kept as they are if they would get bigger.

Will compressed photos lose quality?

At quality 75–85 the difference is very hard to see on a screen. Lower settings give smaller files with softer detail. Compare a few results in the preview before you download the ZIP.

How many images can I compress at once?

Up to 500 per batch. For more, run a second batch.

Are my photos uploaded?

No. All compression happens inside your browser, on your own device.

Can I compress PNG files?

Yes. PNG is lossless, so the tool reduces the number of colours, which works very well for screenshots and graphics. For photos, choose JPG or WebP for much smaller files.

Does it remove EXIF and GPS data?

Yes. Compressed files do not keep the original metadata, including the GPS location, which is good for privacy when you share photos.

Good to know

  • Up to 500 images per batch; HEIC (iPhone) photos are accepted and saved as JPG
  • Metadata (EXIF, GPS) is not copied to the compressed files
  • The first 24 results are previewed; the ZIP always holds everything
  • To hit an exact size in KB for one photo, use Compress Image to Size

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