PDF vers PNG haute résolution — Sortie 300 DPI

Questions Fréquentes

Can I convert PDF to PNG at 300 DPI?

Yes — our PDF to Image tool supports up to 300 DPI PNG output. Drop your PDF, pick 'PNG' as format and '300' as DPI, click 'Render'. You get a ZIP of 300 DPI PNGs ready for print or high-resolution display.

What's the difference between JPG and PNG output?

PNG is lossless — every pixel is preserved exactly. Output files are larger but quality is identical to the source. JPG uses lossy compression — output is smaller but loses fine detail. For screenshots, diagrams, text-heavy pages: PNG. For photos and small previews: JPG. For print: PNG at 300 DPI is the gold standard.

How big is a 300 DPI PNG of a PDF page?

A standard Letter or A4 page at 300 DPI is roughly 2550×3300 pixels — about 1-3 MB per page for text-heavy content, 5-15 MB per page for image-heavy pages. A 10-page text document: 10-30 MB. For photos and graphics-heavy PDFs, file sizes grow quickly. Compress the ZIP if needed after download.

Will my PDF be uploaded?

No. pdfjs-dist processes every page locally. For sensitive documents (design contracts, exam papers, unpublished research), the PDF and resulting PNGs stay on your device.

What about transparent backgrounds?

PDF pages have a defined background (typically white, but transparent for some design assets). Our output uses white background by default. To preserve PDF transparency (when present in the source), toggle 'Transparent background' — output PNGs then have transparent backgrounds for compositing.

Can I get WebP instead of PNG or JPG?

Yes — for modern web use, choose 'WebP' as output. WebP produces 25-35% smaller files than JPG at the same visual quality, and is supported by all modern browsers. For graphics with transparency, WebP also supports alpha channel like PNG.