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Compress PDF Online
Compress large PDFs to a smaller size while keeping text readable and images clear, so files are easier to email, upload, and share without sacrificing layout.
How to use this tool
- Upload a PDF file to analyze and compress.
- Run compression to generate a smaller downloadable version.
- Compare output size and keep the version that best balances quality and file weight.
When to use compression
- Reduce attachment size for email and file-sharing limits.
- Prepare lighter PDFs for mobile downloads and web delivery.
- Shrink scanned documents that are oversized after capture.
Output expectations
- Compression gains vary by source content and existing encoding.
- Image-heavy PDFs usually see larger reductions than text-first files.
- Review visual quality on graphics and small text before final distribution.
FAQ
- Will compression always reduce file size a lot?
- Not always. Already-optimized PDFs may only shrink slightly.
- Does this change my original file?
- No. The original remains untouched and a new compressed file is generated.
- Is processing done in-browser?
- Yes. Compression runs locally in your browser session.
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