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Your PDF never leaves your device. Everything runs in the browser, no server, no upload, no data stored.
Compress PDF
Client-side PDF compression in your browser, no file ever leaves your device
Guide
How to Compress a PDF
1
Upload Your PDF
Drag and drop or choose any PDF file from your device.
2
Choose a Compression Level
Pick a compression level: Recommended, Extreme, Less, or Custom.
3
Compress PDF
Click Compress and download the smaller PDF instantly.
4
Download the Result
When done, you see the before/after sizes and reduction percentage. Click Download Compressed PDF to save the file, or compress another.
Email-Friendly PDFs in Three Clicks
A 30 MB PDF bounces from most email servers and frustrates everyone on a slow connection. The compressor brings any PDF down to email-safe size while keeping text readable and images crisp.
Lawyers compress signed contracts, students compress assignments, and remote teams compress meeting decks before sharing on Slack or Teams.
Benefits
Why Use Our PDF Compressor?
4 Compression Levels
Choose Recommended for a balanced result, Extreme for maximum size reduction, Less for near-original quality, or Custom to set your own quality percentage or target file size.
Target Size Mode
Enter a target file size in KB and the compressor will automatically select the appropriate quality and scale settings to approximate it.
Multi-Page Support
Works on PDFs of any page count. Each page is individually rasterized at the chosen quality and scale, then reassembled into a single PDF.
Real-Time Progress
A live progress bar shows which page is being processed so you always know how long is left. Cancel at any time without any side effects.
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FAQ
Frequently Asked Questions
Common questions about our PDF compressor
How does the PDF compression work?
Each page of the PDF is rendered to a canvas in your browser and then re-encoded as a JPEG image at the chosen quality. browser PDF builder then assembles these images back into a new PDF. This rasterization approach reliably reduces file size but means text is no longer selectable in the output.
Will text still be selectable after compression?
No. Because each page is converted to an image, text is rasterized and will no longer be selectable, searchable, or copyable in the output PDF. If you need to preserve text layers, consider a server-side compressor that uses lossless PDF object optimization.
Which compression level should I choose?
Recommended works well for most use cases, it gives a good size reduction while keeping pages readable. Use Extreme when size is critical and some quality loss is acceptable, such as for email attachments. Use Less when near-original visual quality is important, such as for printing.
Is there a file size or page limit?
There is no hard limit, the tool runs entirely in your browser. In practice, very large PDFs (100+ pages or files over ~50 MB) may be slow or cause memory pressure in older browsers. Most modern browsers handle typical PDFs without issue.
Is my PDF uploaded to a server?
No. The entire process, reading, rendering, and re-encoding, happens locally in your browser. Your PDF never leaves your device and no data is sent to any server.