Compress a PDF
Most oversized PDFs are large because of the images inside them. This tool re-encodes those images at a quality level you choose and leaves the text layer untouched.
or drag and drop here
How this works, and the trade-off
This tool renders each page to an image and rebuilds the document from those images. It shrinks scanned and photo-heavy PDFs a great deal.
But it means text in the output is no longer selectable or searchable, and screen readers cannot read it. If your PDF has a real text layer — try selecting a line of text in it — consider whether that matters before compressing. If the document is a scan, its pages were already images and you lose nothing.
No upload
Files are read and written on your device
No limits
Any file size, as many times as you like
No account
There is no sign-up anywhere on this site
Frequently asked questions
- How much smaller will my file get?
- It depends entirely on what is in the document. Scanned pages and photo-heavy PDFs often shrink substantially. A text-only PDF has little image data to compress, so the saving will be small — the tool reports the exact before and after size so you can decide whether to keep the result.
- Will the text get blurry?
- No. Text in a normal PDF is stored as vector glyph data, not pixels, and is passed through unchanged. Only raster images are re-encoded.
- Is the file uploaded for processing?
- No. Compression runs on your own CPU inside the browser tab. The document is never transmitted.