100% Client-Side • Your Files Never Leave Your Device

Compress PDF Files Online

Reduce PDF file size without sacrificing visual quality. Fast, secure, and 100% in-browser compression with zero server upload.

No server upload Batch PDF Support Max 100 MB per file Free Forever

Drop your PDF files here or click to upload one or multiple PDF documents

⚡ Fast In-Browser 📄 Max 100 MB 🔒 100% Private

Uploaded Documents 0 Files

Compressing Your PDF…

Analyzing and downsampling image assets

Processing Document 1 of 1 0%

Compression Complete!

1 PDF Processed • Overall Savings: 64.2% (12.4 MB Saved)

Compression Level

Target Image DPI

Filename Suffix

Remove redundant metadata & comments Rebuild & compress PDF object streams

100% Client-Side • Zero Server Uploads

Why Choose Toolora

Everything You Need, Nothing You Don't

Lightning-fast, secure in-browser PDF compression with zero server dependency.

Lightning Fast

High-speed parallel optimization engine reduces file sizes in seconds directly inside your browser.

Quality Control

Choose between Basic, Balanced, and Extreme presets or fine-tune exact DPI resolutions.

Batch Processing

Upload multiple PDFs at once and download all compressed files individually or as a ZIP.

Size Comparison

Review exact before-and-after file sizes, MB saved, and percentage reductions for every PDF.

Privacy Focused

Your documents never leave your device. 100% client-side processing ensures total security.

Works Everywhere

Fully responsive design works seamlessly across desktop, tablets, and smartphones.

More PDF Tools

Explore our full suite of free online document tools.

Frequently Asked Questions

Everything you need to know about compressing PDF files.

What does PDF compression do?

PDF compression optimizes document structure, downsamples high-resolution embedded images to appropriate DPI levels, and strips unneeded metadata to significantly reduce total file weight.

Will compressing a PDF reduce text quality?

No. Vector text, digital fonts, and line drawings remain crisp and sharp. Compression focuses on optimizing heavy scanned graphics and photographs.

Which compression level should I choose?

We recommend Balanced for general documents and school notes. Choose Basic if you are preparing documents for fine print, or Extreme if you have strict file size limits.

Are my files secure?

100% secure. All processing takes place locally inside your web browser. Your private documents are never uploaded to any remote server.