Most oversized PDFs are oversized because of the photos inside them. pixelpix re-encodes those images at a quality you choose, keeps everything else byte-identical, and only keeps a result that's actually smaller.
If a document has no compressible images it tells you so — no fake “optimized!” badge on an unchanged file.
Shrink the images, keep the rest
Most oversized PDFs are big because of the photos inside them. pixelpix re-encodes those images at a quality you choose, keeps everything else byte-identical, and only keeps a result that is actually smaller. If a document has no compressible images it tells you so — no fake “optimised!” badge on an unchanged file.
How it works
Drop a PDF and open Compress.
Pick an image quality level.
Apply and compare sizes, then download.
Like every pixelpix tool, this runs 100% in your browser: your file is never uploaded to a server, never leaves your device, and works even offline once the page has loaded.
Frequently asked questions
How much smaller will my PDF get?
It depends entirely on the images inside. Photo-heavy and scanned PDFs often shrink by half or more; text-only PDFs have little to compress.
Will compressing reduce quality?
Images are re-encoded at a quality you pick; on screen and in normal printing the difference is usually invisible.
Why did my PDF not shrink?
If it has no compressible images, there is nothing to gain — and the tool honestly leaves it unchanged rather than bloating it.