इमेज DPI बदलें
Change image DPI
Set the DPI a printer or form expects, without touching the pixels.
Runs in your browser · nothing uploaded
DPI (dots per inch) is only a label that tells printers how big to print: a 1200 × 1800 px photo at 300 DPI prints at 4 × 6 inches, at 150 DPI it prints at 8 × 12. Changing DPI doesn't add or remove pixels, so it doesn't change sharpness or KB much. If a form asks for "300 DPI" and a pixel size, resize the pixels as well.
How to use it
- 01Choose the DPI (300 for print and most forms).
- 02Add a JPG or PNG.
- 03Download it; the print size at that DPI is shown.
1200 × 1800 px JPG at 72 DPI
Same file at 300 DPI · prints 10.2 × 15.2 cm
About this tool
DPI is a label inside the file that says how many pixels to print per inch. It doesn't change the pixels, the sharpness or (much) the file size: a 1200 × 1800 px photo is 4 × 6 inches at 300 DPI and 8 × 12 inches at 150 DPI. When a form asks for 300 DPI, it usually also wants a pixel size; resize first if needed.
For JPG the tool edits the JFIF header (and any EXIF resolution tags); for PNG it writes a pHYs chunk. The compressed picture data is copied byte for byte, so there is no quality loss. Other formats such as WebP are saved as PNG with the DPI set.
Your image is processed in your browser and never uploaded; close the tab and it's gone.
हिंदी में मदद
JPG या PNG की DPI (जैसे 300) बदलें, बिना फ़ोटो की क्वालिटी बदले। DPI सिर्फ़ प्रिंट साइज़ बताती है, पिक्सेल नहीं बदलती। फ़ोटो कहीं अपलोड नहीं होती।
Questions
Does changing DPI improve quality?
No. Quality depends on pixels. DPI only tells a printer how large to print them.
How do I make a 300 DPI passport photo?
Use the passport photo tool: it crops to the right pixels for 300 DPI and sets the DPI too.
Windows still shows 96 DPI. Why?
Some viewers read a different field or show the screen's DPI. The file's DPI is set; printing apps and portals read it.