PDF Compressor — Reduce PDF File Size Free Online
Compress PDF files and reduce their size by up to 70%. Choose your compression level, see exact before/after savings, and download instantly — 100% free, no signup.
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PDF files onlyUp to 100 MBUp to 70% smaller
Frequently Asked Questions
- How much can I reduce my PDF file size?
- Results vary by content. PDFs with many high-resolution images can shrink by 50–70% on Maximum compression. Text-heavy PDFs may only reduce by 10–20%.
- Will compression reduce the quality of my PDF?
- On Balanced and Minimal settings, quality loss is barely noticeable. Maximum compression significantly reduces image resolution — best for screen viewing, not printing.
- Is my PDF safe when compressing online?
- Yes. Files are processed in memory on our servers and never stored or shared. All data is permanently deleted immediately after your download.
- What is the maximum file size I can compress?
- You can compress PDF files up to 100 MB in size.
- Why is my PDF barely getting smaller?
- If your PDF contains mostly text or is already optimised, there is limited room to compress further. Compression has the greatest impact on PDFs with embedded high-resolution images.
Files are processed securely and permanently deleted after download. Never stored or shared.