Compress PDF - Free Online Tool
Compress PDF files online to reduce size without losing quality. Free PDF compressor with advanced optimization — no signup, no watermarks, in-browser.
Compress PDF files online — reduce size up to 80% without losing quality
Compress PDF Features
- Lightning Fast: Compress PDFs in seconds — all processing happens in your browser, no uploads
- 4 Compression Levels: Maximum compression, balanced, high quality, or max quality — you choose the tradeoff
- Batch Processing: Compress up to 10 PDFs at once with individual progress tracking and ZIP download
- Advanced Options: Remove metadata, optimize fonts, and compress images with granular control
- Preview & Stats: Preview compressed PDFs and see original vs compressed size with savings percentage
- 100% Private: Your files never leave your device — everything runs locally in your browser
How to Use Compress PDF
Compress your PDFs in three simple steps
- Step 1: Upload PDFs — Drag & drop or browse — up to 10 PDF files, 50MB each
- Step 2: Choose Settings — Pick compression level and toggle metadata removal, font optimization, image compression
- Step 3: Download — Download compressed files individually or all as a ZIP archive
Frequently Asked Questions about Compress PDF
How much can I reduce PDF file size?
Typically 30-80% reduction depending on content type. PDFs with images compress more. Our 4 compression levels let you choose the right balance.
Will compression affect PDF quality?
Text remains crisp at all levels. Image quality depends on compression level — use 'High Quality' or 'Max Quality' for important documents.
Is the PDF compressor free?
Yes, completely free with no signup, no file limits, no watermarks. Compress as many PDFs as you need.
Is my PDF data safe?
Yes, all compression runs locally in your browser. Your files never leave your device — we can't see or access them.
Can I compress multiple PDFs at once?
Yes, upload up to 10 PDFs simultaneously. Each file shows individual progress and you can download all as a ZIP.
What do the optimization options do?
Remove Metadata strips author/title info. Optimize Fonts uses object streams for smaller output. Compress Images reduces image resolution based on your chosen level.
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