Compress PDF Fast
No software to install, no accounts to create. Upload your PDF, click Compress, and download the smaller file — done in seconds. Works on any device, any browser.
When you need a smaller PDF right now, the last thing you want is to download software, create an account, or wait in a queue. PDF.it compresses your PDF in seconds — no installation, no signup, no friction. Just upload, compress, and download.
- ✓ Compress PDFs in seconds — no waiting
- ✓ No software to install or update
- ✓ Works on Mac, Windows, iOS, Android, and Linux
- ✓ Files are automatically deleted after your session
Drop your files here
or click to browse files
Supported formats: .pdf
Last-Minute Email Attachments
Your PDF is too large to attach and the email needs to go out now. Compress it in seconds and attach the smaller version — no installs, no accounts.
Quick File Sharing
Need to share a PDF via Slack, Teams, or a messaging app? Compress it quickly so it uploads and downloads faster for everyone involved.
On-the-Go Compression
Away from your computer? Compress PDFs directly from your phone or tablet using any mobile browser. No app download needed — just open PDF.it.
How to Compress a PDF Fast
Upload your PDF
Drag and drop or click to choose a file
Choose compression level
Light, Medium, or Extreme reduction
Download your PDF
Get your compressed file instantly
Frequently Asked Questions
How fast is PDF.it compression?
Most PDFs are compressed in just a few seconds. Processing time depends on file size and complexity, but typical documents are ready for download almost immediately after clicking Compress.
Do I need to create an account to compress a PDF?
No. You can compress PDFs immediately without signing up or logging in. Just upload your file, click Compress, and download the result. Free users get up to 10 compressions per day.
Do I need to install any software?
No. PDF.it runs entirely in your browser. There is nothing to download or install. It works on any device — Mac, Windows, iPhone, Android, Linux, Chromebook.
Is my PDF safe when I compress it online?
Yes. Your files are processed securely and automatically deleted after your session ends. PDF.it does not store or share your documents.
How much will my PDF be compressed?
Results depend on the content of your PDF. Documents with images and unoptimized structures typically see significant size reductions. Already-optimized PDFs may see smaller reductions.
Can I compress PDFs on my phone?
Yes. PDF.it works in any mobile browser — Safari, Chrome, Firefox, or Samsung Internet. Upload from your camera roll or file manager, compress, and download the smaller file instantly.