PDF Compressor
Reduce the size of any PDF document.
Drag & drop a file here, or browse
Your result will appear here. Processing happens entirely in your browser.
How to Use PDF Compressor
Upload PDF File
Select the large PDF file you want to compress from your local storage.
Select Compression Level
Choose the compression target to optimize embedded images and structural metadata.
Download Compressed File
Download the reduced PDF document with instant size savings calculated.
About PDF Compressor
Reduce the file size of your PDF documents quickly and privately. Whether you need to compress a PDF for email transmission, university submissions, or portal uploads requiring under 2MB or 500KB, our tool optimizes internal document streams directly inside your browser.
Zero Server Upload
Files remain on your local disk at all times.
Unlimited Free Usage
No file size limits, paywalls, or daily caps.
Frequently Asked Questions
How do I compress a PDF to under 500KB or 1MB?
Select your PDF, choose the optimal compression mode, and the tool will downscale embedded raster images and streamline PDF dictionaries to minimize storage footprint.
Does PDF compression work offline?
Yes. Once the page is loaded in your browser, all compression algorithms execute using local JavaScript with zero server network calls.
Will the text in my PDF remain selectable and searchable?
Yes. Text streams and font glyphs remain crisp and searchable vector objects; only oversized embedded images and redundancies are optimized.