PDF to JPG vs PDF to PNG: which should you pick?
Both turn a PDF into images. One gives you tiny files that look fine. The other gives you pixel-perfect quality at 3x the size. Here's when to use each.
The one-line answer
Use PDF to JPG for photos, scans, and anything a human just needs to look at. Use PDF to PNG for screenshots of text, diagrams, forms you'll edit, and anything with sharp lines. JPG's compression softens edges; PNG keeps them razor-sharp but files can be 3–5x bigger.
Why the difference exists
JPG uses lossy compression — it throws away detail your eyes are unlikely to notice, and that math works brilliantly on smooth gradients like sky, skin, and photographs. On sharp edges (letters, black lines on white) JPG creates faint halos and blockiness. Zoom in on any JPG screenshot of text and you'll see it.
PNG is lossless — every pixel is preserved exactly. Text stays crisp, lines stay solid, transparent backgrounds are supported. The cost is file size: a single 1080p page as PNG is often 1–2 MB versus 150–300 KB as JPG.
A cheat sheet
Convert to JPG when:
- The PDF page is a scanned photo, an invoice with a photo of a logo, or an image-heavy brochure.
- You need to share dozens of pages by email and file size matters.
- You're posting to a platform that recompresses everything anyway (Instagram, WhatsApp).
Convert to PNG when:
- The PDF is a screenshot, a chart, a form, a design mockup, or a diagram.
- You need to zoom in later without artifacts.
- You'll drop the image into a presentation and need clean text.
- You need a transparent background (PNG supports it, JPG doesn't).
Convert to WebP when:
- The destination is a modern website you control. WebP is roughly 30% smaller than JPG at the same quality and supports lossless mode. Every browser released after 2020 supports it.
Resolution matters as much as format
Both PDF to JPG and PDF to PNG let you choose DPI. The right value:
- 72–96 DPI: screen preview only. Small files, blurry on print.
- 150 DPI: the sweet spot for web use and most day-to-day sharing.
- 300 DPI: print-ready. Sharp on paper, bigger files.
- 600 DPI: archival scanning. Almost always overkill unless the source is fine typography or artwork.
Doubling DPI quadruples the file size (it's a 2D increase). Pick the lowest DPI that still looks acceptable — you can always re-export.
The privacy angle
Every browser-based PDF to JPG, PDF to PNG, and PDF to WebP conversion on DashConvert runs locally — your PDF never leaves your device. That matters for contracts, medical records, or anything with names and addresses on it. Upload-based converters, even the popular ones, retain files anywhere from an hour to 30 days on their servers.
When you need something in between
If PNG is too big and JPG looks smudgy on your text, PDF to WebP is worth a try — it usually renders sharp text like PNG but at file sizes closer to JPG. The only reason not to use it is if your destination is somewhere old that won't render WebP (some print shops, some legacy CMSes, some email clients on old Android).