PDF Compressor
Compress PDF files to bypass upload limits. Reduce file size by up to 90% while maintaining visual quality. All processing happens locally in your browser.
100% Your data never leaves your browser
All processing happens locally in your browser.
Drag and drop a PDF file here, or click to browse
PDF files only
All processing happens locally in your browser.
How to Compress a PDF File?
Upload PDF
Drag and drop your PDF file into the upload area, or click to browse. We accept files of any size.
Choose Compression
Select your compression level: Low for best quality, Medium for balanced results, or High for smallest file size.
Download
Once compression is complete, download your smaller PDF. See the before and after file sizes instantly.
Why Use BrowserKits for PDF Compression?
Bypass Upload Limits
Reduce large PDFs to under 5MB for email attachments, web portals, and document submission systems.
100% Private & Secure
Your PDF never leaves your browser. No server uploads mean your confidential documents stay private.
Works on Huge Files
Compress PDFs of any size. Our client-side processing handles large files without timeouts or limits.
Completely Free
No subscriptions, no watermarks, no daily limits. Use it as much as you need.
Use Cases
Email Attachments
Reduce PDF size to fit email attachment limits. Send large documents without file size rejection errors.
Cloud Storage
Save valuable cloud storage space by compressing PDFs before uploading to Drive, Dropbox, or OneDrive.
Web Uploads
Meet website upload limits for job applications, government portals, or online submission forms.
How It Works: Client-Side Processing
Your privacy is our priority. Here's why our approach is different:
PDF.js Rendering
Mozilla's PDF.js library renders your document locally, ensuring accurate page processing without server uploads.
Smart Compression
Each page is intelligently optimized using advanced image compression algorithms for maximum size reduction.
Quality Options
Choose from Low, Medium, or High compression levels to balance file size with visual quality for your needs.
Frequently Asked Questions
Why is the text not selectable in the compressed PDF?
To achieve maximum compression, we convert each page to an optimized JPEG image. This process, called rasterization, significantly reduces file size but means text becomes part of the image and cannot be selected or searched.
How much can I reduce my PDF size?
Results vary depending on the original PDF content. Image-heavy PDFs can often be reduced by 70-90%. Documents with mostly text may see smaller reductions but still significant savings.
Is this safe for sensitive documents?
Absolutely. All processing happens entirely in your browser. Your PDF is never uploaded to any server, making this the safest option for compressing confidential contracts, financial documents, and private information.