Compress PDF

Client-side compression by default. Files stay on your device unless fallback is needed.

Compression Level

Smart optimize (auto retry with Maximum if savings are low)

Drop PDFs here

Client-side only. No uploads. Supports multiple files.

Drag & drop PDFs

or click to select files

About PDF Compression

Compress PDF files instantly in your browser. Reduce PDF size by up to 90% without losing quality. Privacy-first: your files never leave your device.

How to Compress a PDF File

Upload PDF: Drag and drop your PDF file or click to select from your device.
Choose compression level: Select Light (300 DPI), Balanced (150 DPI), or Maximum (72 DPI) compression.
Wait for processing: Your file is compressed in your browser using WebAssembly technology.
Download compressed PDF: Click the download button to save your smaller PDF file.

Features

•Reduce PDF file size by up to 90%
•Three compression levels: Light, Balanced, Maximum
•Client-side processing - files never uploaded
•Works offline after first load
•No file size limits for logged-in users
•Batch compress multiple PDFs

Frequently Asked Questions

How does PDF compression work?

Our PDF compressor uses advanced algorithms to reduce file size by optimizing images, removing duplicate data, and compressing streams. Your files are processed entirely in your browser using WebAssembly technology.

Is my PDF data secure?

Yes, completely. Your PDF files are processed locally in your browser and never uploaded to our servers. This ensures maximum privacy and security for sensitive documents.

What's the difference between compression levels?

Light compression maintains highest quality with moderate size reduction. Balanced offers good quality with significant compression. Maximum provides smallest file size, ideal for email attachments.

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