To compress a PDF online for free, upload your file to a browser-based compression tool. The tool reduces file size by optimizing images and removing unnecessary metadata. Most PDFs can be reduced by 50-80% while maintaining readable quality.
Large PDF files cause problems when sharing via email or uploading to websites. Email services typically limit attachments to 25MB. Compression makes PDFs easier to share without splitting them into multiple files.
| Level | Size Reduction | Quality | Best For |
|---|---|---|---|
| Low | 20-40% | Highest | Print documents, photos |
| Medium | 40-70% | Good | Email, web sharing |
| High | 70-90% | Acceptable | Archive, text documents |
Tip: Start with medium compression. If the file is still too large, try high compression. You can always go back and try a different level.
Text content itself is not affected by compression. All words remain sharp and readable at any compression level.
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Compress PDF NowUpload your PDF to a free online compressor like RaptorPDF. The tool reduces file size by optimizing images and removing unnecessary data. Download the smaller file instantly.
Compression typically reduces PDF size by 50-90%, depending on content. PDFs with large images see the biggest reductions. Text-only PDFs compress less.
Good compression tools maintain readable quality. Text stays sharp. Images may lose some detail at high compression levels, but medium compression keeps quality acceptable for most uses.
Yes, but additional compression yields smaller benefits. The first compression removes the most data. Further compression may slightly reduce quality without significant size reduction.