Compress PDF Online
Reduce PDF file size using Ghostscript. Great for email attachments and web uploads.
Drop files here, or click to browse
Great for email attachments — ebook quality hits ~50–70% reduction.
Max 50 MB per file
Compress PDF reduces file size while keeping text sharp and images clear. ConvertDa's free Compress PDF tool uses Ghostscript on the server to shrink your document by up to 80% — ideal for email attachments, web uploads, or storage limits. Choose between high, medium, and low compression.
How to compress pdf
- 1
Upload your PDF.
- 2
Pick a compression level (recommended: ebook).
- 3
Download the smaller PDF.
Frequently asked questions
How much smaller will my PDF get?▾
Typically 40–80% smaller. Image-heavy PDFs shrink the most.
Is my file private?▾
Yes. Files auto-delete from our storage within 10 minutes of conversion.
How much smaller will my PDF be?▾
Image-heavy PDFs typically shrink 60-80%. Text-only PDFs see smaller gains (10-30%) because text is already efficiently encoded. Try 'medium' first; switch to 'low' if file size still matters more than image quality.
Will compression blur text or break formatting?▾
No. Text is preserved exactly. Compression mainly reduces image resolution and recompresses embedded media. Layout, fonts, and links remain intact.
Are my compressed files safe?▾
Yes. Files upload over HTTPS, are processed in an isolated worker, and auto-delete after 30 minutes. We never view, share, or store the contents.