Reduce the file size of any PDF in seconds — completely free and without uploading your file. PDFCharm compresses PDFs directly in your browser using three adjustable compression levels to suit your needs. Keep your documents private: they never leave your device.
How to compress a PDF online for free
- Click "Choose PDF" or drag your PDF file onto the upload area.
- Select a compression level: Less, Recommended, or Extreme.
- Click "Compress & Download" to save the smaller PDF to your device.
Frequently asked questions
- How much can PDFCharm reduce a PDF's file size?
- Savings depend on the content. Text-heavy PDFs typically see 20–40% reduction; PDFs with large images can see up to 60%.
- Will compression reduce PDF quality?
- The "Less compression" level maintains near-original quality. "Extreme" compression significantly reduces image resolution to achieve maximum size savings.
- Does compressing a PDF upload it to a server?
- No. All compression is done locally in your browser. Your file stays on your device at all times.
- Is there a file size limit for compression?
- No hard limit. Very large PDFs may take longer to process depending on your device's memory.
- Can I compress multiple PDFs at once?
- Currently you can compress one PDF at a time. Use the clear button or refresh the page to compress another file.
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