Why Tools Ku
- 100% free, no signup
- Compress locally for privacy
- Adjust clarity and JPEG quality
- Big size reduction on scan/image PDFs
Email, cloud drives, and forms often cap attachment size. This tool rasterizes pages to JPEG and rebuilds the PDF—great for scans and photo-based documents.
Text-native PDFs are already compact; compression may help less. Everything runs locally in your browser.
Steps
- Upload the PDF to compress
- Choose scale and JPEG quality (lower = smaller file)
- Click compress and wait for local processing
- Compare sizes and download the result
FAQ
- Is my PDF uploaded?
- No. Compression uses Canvas and pdf-lib in your browser only.
- Why little effect on text PDFs?
- Text PDFs are already efficient; rasterizing can even grow size. This tool targets scan/image-heavy PDFs.
- Can I still select text after compression?
- Rasterized pages become images—text is usually not selectable. Keep originals if you need selectable text.
- How small can files get?
- Depends on page count and settings. Lower quality and scale reduce size but reduce clarity.
- Batch compress multiple PDFs?
- One PDF per run today. Merge first if you need a single workflow.
- Can I print the result?
- Yes—output is a standard PDF for viewing, sharing, and printing.