Change Image DPI
- Runs in your browser
- No sign-up
- Free, no watermark
Drop images to change their DPI
JPG and PNG keep their format · other images save as PNG
How it works
How to use the DPI Changer
Choose a DPI
Pick 72, 96, 150, 300 or 600, or type any custom value.
Add images
Drop JPG or PNG files. Other formats are saved as PNG.
Download
Each file shows its new print size in inches. Download one or all.
Why BGFixer
Built for real work, not just demos
Print-shop ready
Meet the 300 DPI requirement for printers, publishers and print-on-demand sites.
See the print size
We calculate exactly how large each image will print at the DPI you chose.
Batch DPI change
Update an entire set of artwork files in one click.
Lossless
Only the DPI value in the file header changes. Image quality stays exactly the same.
Guides
Learn more with the DPI Changer
How to Convert an Image to 300 DPI for Print (Free)
Printer wants 300 DPI? Learn what DPI really means, when changing it is enough, when you need more pixels, and how to set 300 DPI on JPG and PNG free.
How to Upscale an Image Without Losing Quality
Make small images bigger and sharper with a free AI upscaler. When upscaling works, which scale to pick, and when to vectorize logos instead.
Start Print on Demand With Free Tools (2026 Guide)
Start a print-on-demand side business with free tools: create print-ready 300 DPI designs, vectorize artwork, make mockups and list on Etsy or Printful.
Frequently asked questions
What does DPI mean?
DPI (dots per inch) tells printers how many pixels to place in each inch of paper. It does not change how the image looks on screen.
How do I convert an image to 300 DPI?
Select 300, drop your JPG or PNG files, and click Set DPI. The pixels are unchanged; only the print resolution stored in the file is updated.
Will changing DPI make my image sharper?
No. DPI only affects print size. To add real detail, use the AI Upscaler first, then set the DPI.
What DPI should I use?
300 DPI for photo prints and professional printing, 150 DPI for large posters viewed from a distance, and 72 or 96 DPI for screens.