Free OnlinePDF Tools
PDF Compressor
Compress PDF files online for free to reduce size. Optimize PDFs for email, web upload, or storage while maintaining readability. Reduce PDF size by up to 80%.
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Drop a PDF file here or click to upload
Compress PDF to reduce file size
Key Features — PDF Compressor
Reduce PDF file size significantly
Multiple compression levels
Preserves text quality
Before and after size display
Client-side processing
Why Use This Tool — PDF Compressor
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Privacy First
All processing happens in your browser. Your data never leaves your device.
Lightning Fast
Get instant results with zero wait time. No server delays, no loading screens.
Works Everywhere
Use on any device — desktop, tablet, or phone. No downloads or plugins needed.
Frequently Asked Questions — PDF Compressor
How much reduction?
PDFs with large images see 50-80% reduction. Text-heavy PDFs may only reduce 10-20%.
Does it reduce quality?
Text stays sharp. Images may show some reduction at high compression.
Why is my PDF the same size?
Already-optimized or text-only PDFs have little to compress.