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300 DPI is the standard for print. At this resolution a letter-size page becomes roughly 2550 × 3300 pixels — sharp enough for posters and print shops.
No upload. No watermark. No sign-up. Every tool mentioned here runs inside your browser.
Use 300 DPI when the image will be printed, enlarged, or submitted to a printer. Use 150 DPI for screen use and email, and 96 DPI for quick thumbnails or web previews.
Higher DPI means bigger files: a 10-page document at 300 DPI can easily exceed 50 MB, which is why the tool packs multiple pages into a ZIP.
Yes — use PDF to PNG for lossless output, which is better for line art, logos and diagrams.
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