Compress PDF Files
Reduce your PDF file size while preserving readability. Choose your compression level for the perfect balance. 100% browser-based. Zero uploads.
Drop your PDF here
or click to browse files from your device
Maximum file size: 50 MB • Only .pdf files accepted
document.pdf
0 KB • 0 pages
Compression Level
Low
Best quality, slightly smaller file size. Ideal for documents with fine text or graphics.
Medium
RecommendedGreat balance between quality and file size. Perfect for most documents and presentations.
High
Maximum compression for smallest file size. Best for email attachments and sharing online.
Compressing...
0 / 0 pagesPreparing...
Compression Complete
Original
0 MB
0%
smaller
Compressed
0 MB
How it works
Three simple steps — everything happens in your browser.
Upload your PDF
Drag and drop or click to select a PDF file from your device. Up to 50 MB supported.
Choose compression level
Pick Low, Medium, or High compression depending on your needs.
Download compressed PDF
See the size comparison and download your smaller PDF file instantly.
Why choose ToolKnit for PDF Compression?
100% Private — No Server Uploads
Your PDF never leaves your device. All compression is done locally using modern browser APIs. No data is sent to any server — ever.
Fast & Efficient
Compression happens instantly in your browser. No waiting for server processing — even large PDFs compress in seconds.
Three Compression Levels
Choose the right balance for your needs — from minimal compression for quality-critical documents to maximum compression for email and web sharing.
Up to 80% Smaller
Significantly reduce your PDF file size while preserving readability. Perfect for email attachments, cloud storage, and faster page loads.
Pro Tips
- • Use Low compression for documents with fine text or detailed graphics to preserve quality.
- • Medium compression is ideal for most office documents, reports, and presentations.
- • Use High compression when file size is the top priority — great for email attachments.
- • PDFs with lots of images benefit most from compression. Text-only PDFs are already quite small.