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Compress PDF

Reduce PDF file size while keeping quality.

How it works

Step 1

Upload your file

Drag & drop or click to select your PDF from your device, Google Drive, or Dropbox.

Step 2

Process

Our servers instantly run Compress PDF on your file — no plugins or software required.

Step 3

Download

Your result is ready in seconds. Click download and you're done.

Frequently asked questions

How do I compress a PDF for free?
Upload your PDF, choose a compression level (Recommended reduces most files 50–70%; Strong goes up to 90%), and click Compress PDF. Download the smaller file instantly.
How much will my PDF be compressed?
Results vary by content. Image-heavy PDFs (scanned documents, brochures) typically compress 70–90%. Text-only PDFs may compress 20–40%. The tool shows the before/after size.
Does compressing a PDF reduce quality?
Recommended compression reduces image resolution to screen-optimised levels — the difference is invisible at normal reading zoom. Text and vector graphics are never degraded.
How do I compress a PDF for email?
Upload your PDF and use Recommended compression. Most email services accept attachments up to 20–25 MB. Strong compression further reduces size for very large files.
How do I compress a PDF on iPhone?
Open Safari on iPhone, go to pdftoolz.io/tools/compress-pdf, upload from your Files app, compress, and download. No app installation needed.
Can I compress a PDF without losing text sharpness?
Yes. The compression targets image data only. Text is stored as vector data in PDFs and is not affected by image compression settings.