Compress PDF
Reduce PDF file size by optimizing internal structure and streams.
Note: This tool optimises PDF structure (metadata stripping, cross-reference streams). For heavy compression of scanned/image-based PDFs, results may vary.
Click or drag a PDF here
Works best on PDFs with text content
Max 100 MB per file
How it works
Upload your PDF and the compressor reduces its file size by optimizing internal streams, fonts, and image data. The resulting file is smaller and easier to email or upload while retaining readable quality.
Why use this tool?
Email size limits, upload restrictions on government portals, and storage constraints make PDF compression essential. This free PDF compressor is one of the most searched tools for reducing PDF size online.
Frequently Asked Questions
How much does PDF compression reduce file size?
Reduction varies by content. PDFs with many images typically compress by 40–70%. Text-only PDFs see smaller reductions.
Will compression affect quality?
The tool optimises internal streams and structure. For most documents the visual quality remains the same.
Is there a file size limit?
No hard limit is imposed by PreppTools. Very large files may take longer to process depending on your device.
Is this free?
Yes, completely free. No watermarks, no sign-up, no subscription required.
Rate this tool:
Was this tool helpful?