150 DPI for screens
A practical balance for websites, slides, email, and on-screen review.
Private, local conversion
PDF ↔ Image converter
Choose the resolution you actually need, convert batches without freezing the page, and keep every file on your device.
72–600 DPI
Multi-core
No quotas
300 DPI for print
Sharp text and diagrams at common print sizes without guessing a quality label.
Work stays responsive
PDF.js parses in a worker while an adaptive worker pool handles image encoding.
Built around the problems other converters hide
Will large files be uploaded?
No. PDF parsing, rendering, image encoding, ZIP creation, and PDF generation all happen locally. There is no server upload step.
Why can 600 DPI be slower?
Doubling DPI creates four times as many pixels. The converter automatically reduces parallel jobs for very large pages to protect browser memory.
Does JPG always lose quality?
JPG is intentionally lossy. Use PNG for crisp text and diagrams, or adjust JPG/WebP quality when file size matters more.
What happens with a 100-page PDF?
Pages render in a controlled queue, finished outputs appear immediately, and encoding is spread across available worker threads. You can stop at any time.