Change Image DPI to 300
Set the DPI tag on any photo — 300 for print shops, 150 for drafts, 72 for legacy uploads. Your pixels stay untouched; only the printing instruction changes.
Updated May 2026 · Free · Works entirely in your browser
Target DPI
What the DPI tag actually does
DPI (dots per inch) is a number written into the file header. It carries no pixels and adds no detail — it simply tells a printer or a layout program how large one inch of the image should be. A 3000 × 2000 photo is the same photo whether it is tagged 72 or 300; at 300 DPI it prints 10 by 6.7 inches, at 72 DPI it prints 41.7 by 27.8 inches and looks soft.
When you need this tool
- A print shop, publisher or university rejected your file for being "72 DPI".
- A submission form insists on 300 DPI even though your pixel count is already plenty.
- You are preparing artwork in a layout program and want it to place at the right physical size.
To find out how big your photo can actually print before it looks soft, use the DPI and print size calculator. If a submission portal also caps file size, run the result through the compress to exact KB tool.
Gear we recommend for this workflow
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KODAK Dock Plus 4x6 Photo Printer, Smartphone Docking, 4PASS, 50 Sheets | Bluetooth, iPhone & Android Smartphone Compatible, Charge While Printing, Water, Fingerprint and Fade Resistant
$129.99
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Reastar Glossy Photo Paper 8.5 × 11, 36 Sheets Inkjet Photo Printer Paper | Instant Dry, 180gsm/48lb, Blank Back, Reflective Finish, Advanced Cast Coating, DIY Chip Bag/Flyer/Card/Calendars/Brochures
$6.99
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BenQ PD2706U Mac-Ready Monitor 27” 4K UHD, 90W USB-C, 99% sRGB, 95% P3, DeltaE ≤3, DisplayHDR 400, IPS, AQCOLOR, Factory-Calibrated, Uniformity, HotKey Puck, Ergonomic, DisplayPort, KVM, USB Hub
Best for accurate color when editing photos
$399.99
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Nelko PP01 Photo Printer, 2x3 Portable Photo Printer, Mini Printer, Pink | Instant Color Sticker Printer for Smartphones, Sticky-Back Photos, Bluetooth Compatible with iOS & Android, AI App Editing
$69.99
Check price on AmazonPrices as of Oct 22, 2026, 4:41 AM UTC. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Frequently Asked Questions
Everything you need to know about image conversion.