About BulkDPI

BulkDPI started from a simple frustration: print shops, self-publishing platforms and application forms keep asking for images "at 300 DPI", and most online tools either upload your photos to a server, handle one file at a time, recompress the image, or hide the download behind a subscription.

BulkDPI does one thing properly. It changes the DPI value stored inside JPG and PNG files without touching a single pixel, for as many images as you need, entirely inside your browser. It also checks DPI and print quality, and calculates print sizes.

How we keep your images private

All processing is done with JavaScript on your own device. Images are never uploaded, stored or seen by us. You can even disconnect from the internet after the page loads and the tool keeps working.

How the site is funded

The tools are free. The site may show advertising to cover hosting and development costs.

Questions or suggestions? Contact us.