Reduce the file size of your PDF documents quickly without losing quality. Fully private browser-side processing.
Supports standard PDF documents up to 50MB
Secure Browser ProcessingFiles are processed in your browser. We never upload your sensitive document data to any server.
Zero storage. Zero leaks. Since no backend files exist, your documents stay completely yours.
No registration, no limits, no credit card. Access premium conversion features free forever.
Upload your heavy PDF document to the file uploader.
Click 'Convert Now' to apply browser-side structural optimization.
Download your compressed PDF, and see exactly how many megabytes were saved.
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ConvertNest's PDF Compressor analyzes PDF binary structures to remove redundant structures, metadata overhead, and index mappings.
This helps you fit documents within strict email attachments limits or web portal uploads, while keeping files inside your browser for safety.
Our tool processes PDF binary structures in your browser using the pdf-lib library. It optimizes internal indexing tables and flattens redundant page descriptions, stripping empty spaces client-side.
No, our default compression runs a lossless structural optimization. It removes meta history, duplicate objects, and flattens cross-references without downscaling or rasterizing your images.
No page limit! However, very large documents (over 100 pages or 50MB) may take a few seconds longer depending on your computer's CPU and RAM.