Compress PDF Files

Reduce your PDF file size while preserving readability. Choose your compression level for the perfect balance. 100% browser-based. Zero uploads.

No Upload Required 3 Compression Levels Instant Download Up to 80% Smaller

Drop your PDF here

or click to browse files from your device

Maximum file size: 50 MB • Only .pdf files accepted

How it works

Three simple steps — everything happens in your browser.

1

Upload your PDF

Drag and drop or click to select a PDF file from your device. Up to 50 MB supported.

2

Choose compression level

Pick Low, Medium, or High compression depending on your needs.

3

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.