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Image Compressor

🔒 Your files stay on your device — processed in your browser, never uploaded.

Reduce JPG, PNG and WebP file size in your browser with a live before/after size readout.

Lower = smaller file. 60–80 is usually invisible to the eye.

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How to use the Image Compressor

  1. Tap "Choose images" or drop JPG, PNG or WebP files onto the box.
  2. Pick an output format and move the quality slider — the new size updates instantly.
  3. Download each image or all of them at once.

Common use cases

  • Email or chat photos without hitting attachment limits
  • Speed up a website by shrinking hero and product images
  • Meet upload limits on job, visa or school portals (often 1–2 MB)
  • Free up phone or cloud storage

Example

A 4.8 MB, 4032×3024 phone photo at quality 70% and max width 1920 px becomes about 350 KB — roughly 93% smaller, with no visible difference on screen.

How image compression works

Photos straight from a phone or camera are often 3–8 MB, far more than a website, email or chat app needs. This compressor re-encodes each picture with a quality setting you control. Lossy formats such as JPEG and WebP throw away detail your eye barely notices, which usually cuts the file size by 50–90%.

For the biggest savings, combine a quality of about 70% with a smaller max width. A 4000 px photo scaled to 1920 px has roughly a quarter of the pixels, so it shrinks a lot before compression even starts. Auto keeps JPEGs as JPEG and turns PNGs into WebP, so transparent backgrounds survive.

Frequently Asked Questions (FAQ)

Q: Are my images uploaded to a server?
A: No. Compression happens in your browser using the built-in canvas encoder. The files never leave your device, and the tool works offline once the page has loaded.
Q: Why did my PNG not get smaller?
A: PNG is lossless, so re-saving it as PNG rarely helps. Choose WebP or JPEG, or lower the max width. If the result would be larger than the original, the tool keeps your original file.
Q: What quality should I use?
A: 75–80% for photos on websites, 60–70% for email attachments and chat, and 85%+ when you still plan to edit or print the image.
Q: Is location (EXIF) data kept?
A: No. Re-encoding strips EXIF metadata such as GPS location and camera model, which is good for privacy.