iGuardPDF

Compress Image

Shrink a JPG or PNG file size without a visible quality hit. Free, no signup.

Available on Pro — from £4/month

  • •Revoke access instantly, even after it's been opened
  • •Invisible fingerprinting on every document
  • •Photo verification on open — approve or deny in 60 seconds
+9 more Pro features, from £4/month →

How to compress a JPG or PNG image

  1. Upload the image you want to shrink.
  2. It compresses automatically.
  3. Download the smaller file.

Common reasons to compress an image

  • Getting a photo under a website or form's upload size limit
  • Speeding up a page full of images
  • Reducing storage space across a large photo library

FAQ

Will I notice a quality difference?

At normal viewing sizes, no — the compression targets a reduction that's genuinely invisible to the eye.

Does it work on both JPG and PNG?

Yes, both formats are supported.

Is there a limit on image size or resolution?

No hard cap on the free tier.