DPI Changer
Change the DPI of an image to 300 or any print resolution without re-compressing pixels. Free, lossless, in your browser.
DPI is print-resolution metadata: it tells printers and layout apps how large your image should print — it never changes the pixels. Drop an image, pick a target DPI and download a copy with its density fields rewritten. Everything happens in your browser; your image is never uploaded.
Drop an image here
or click to choose — JPG, PNG or TIFF are patched losslessly; other formats are re-encoded to PNG. Never uploaded.
Choose an imageNo density metadata found — most apps assume 72 or 96 DPI.
Target DPI
Patched 100% in your browser — nothing is uploaded.
DPI updated & downloaded
Verified: the downloaded file reads back at the new DPI.
About DPI Changer
The DPI Changer rewrites the print resolution of an image — to 300 DPI for print, or any custom value — without touching a single pixel. Drop an image and the tool shows its current DPI and dimensions, lets you pick a preset (72, 96, 150, 300 or 600) or type your own, and previews the resulting print size in inches and centimetres before you download.
Unlike converters that re-save the whole image, this tool patches only the density metadata: the JFIF and EXIF resolution fields in a JPEG, the pHYs chunk in a PNG, or the resolution tags in a TIFF. The pixels are copied byte-for-byte, so there is zero quality loss and the file downloads instantly. Formats without a DPI field, such as GIF or BMP, are re-encoded to PNG with a clear notice.
Everything happens locally in your browser — the image is never uploaded to a server. That makes the DPI Changer ideal for meeting 300 DPI submission requirements from printers, publishers, universities and visa or passport photo services.
How to use DPI Changer
- Drop an image or click to choose one — JPG, PNG and TIFF are patched losslessly.
- Check the current DPI and pixel dimensions the tool reads from the file.
- Pick a target DPI preset — 72, 96, 150, 300 or 600 — or enter a custom value.
- Review the print size in inches and centimetres at the chosen DPI.
- Click “Change DPI & download” to save the patched copy.