Compress PDF
Compress PDF shrinks a PDF's file size by re-rendering its pages at an adjustable quality — ideal for email attachments and uploads. Select several PDFs to compress them all in one pass and download them together as a .zip. Everything runs in your browser, so your files are never uploaded.
Last updated: July 2026
Reduce PDF file size for free, right in your browser. Adjustable quality, no uploads — your file never leaves your device.
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How to use Compress PDF
- Choose one or more PDF files.
- Adjust the quality and resolution sliders.
- Click Compress, then download the smaller PDF — or “Download all” as a .zip for a batch.
Frequently asked questions
How does the compression work?
Each page is re-rendered to a compressed image and rebuilt into a new PDF. This works especially well for scanned or image-heavy PDFs.
Can I compress several PDFs at once?
Yes. Select multiple PDFs and they're compressed one at a time (to keep memory low), then offered as individual downloads or a single .zip.
Will the text still be selectable?
No — because pages are rasterised, text becomes part of the image. Use PDF to Text first if you need the text.
Is my PDF uploaded?
No, compression happens entirely in your browser.
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