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Open the image you are preparing for your print workflow.
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Image DPI Converter
Set JPEG resolution metadata to 72, 96, 150, 300 DPI or another value without changing pixel dimensions.
No photo uploadsNo watermarksWorks in your browser
Prepare your print settingsDrop your image here
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JPGPNGWebP
Maximum 20 MB per image
Changes JPEG density metadata; does not add detail or pixels.
Processed on your device
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Your photos stay in this browser. No account needed.
Use pixel dimensions and print size together: required pixels = inches × DPI.
Quick steps
How to change image DPI
Enter the requested DPI
Use the value your printer or software asks for.
Save and verify
Download the JPEG and confirm its resolution and physical size in the software you will print from.
A few useful details
A DPI setting is not extra image detail
If you are preparing an image for printing, the requested DPI can be confusing. Think of it as the number of image pixels placed into an inch of paper. At 300 DPI, a 1,200 px-wide image suggests a width of 4 inches.
This tool changes that density setting in the JPEG’s JFIF metadata. The pixel dimensions stay the same. It does not sharpen a small picture or add detail, and the image is re-encoded as JPEG.
Check the downloaded file in the software or print service you will actually use. Some programs use a different metadata field or ignore density tags. The final print size and pixel count matter more than the tag on its own.
Before you save the result
Use pixel dimensions and print size together: required pixels = inches × DPI.
The tool accepts whole-number values from 1 to 1,200 DPI and exports JPEG.
Check pixels, density and print size together
Work backwards from the paper size
For a requested print width in inches, multiply that width by the intended pixels per inch to estimate the required pixel width. A 6-inch width at 300 pixels per inch needs 1,800 pixels across. A different density tag cannot supply pixels that the source does not have.
Remember what this tool changes
It writes a density value into a freshly encoded JPEG while keeping the decoded pixel dimensions. It is not an upscaler or sharpening tool. If the source is a small screenshot, attaching a 300 DPI value does not turn it into a detailed print-ready photograph.
Confirm the setting in the final application
Editors and print services do not all handle density tags in the same way. Open the exported file in the workflow you intend to use and verify the physical size it proposes. Adjust there if necessary rather than assuming the tag is being interpreted identically everywhere.
Keep a source copy for other jobs
The new JPEG may suit one print workflow, but it is not a replacement for a high-quality original. Original camera and location metadata are not deliberately preserved. Keep the source if another editor, a different physical size or a later export might need it.
| Image width | Density | Suggested print width |
|---|---|---|
| 1,200 px | 300 pixels/inch | 4 inches |
| 1,200 px | 150 pixels/inch | 8 inches |
| 1,800 px | 300 pixels/inch | 6 inches |
Visual examples
See why DPI and pixels are different
Visual metadata illustrations. The paired photos intentionally have the same pixels; these preview images are not DPI-converted downloads.
Pixels![72 DPI: the same digital image — Pixels]()
DPI example![72 DPI: the same digital image — DPI example]()
EXAMPLE 01
72 DPI: the same digital image
Changing print-density metadata does not create or remove pixels. On a screen, the image can look identical.
Visual metadata illustrations. The paired photos intentionally have the same pixels; these preview images are not DPI-converted downloads.
Pixels![150 DPI: a different print scale — Pixels]()
DPI example![150 DPI: a different print scale — DPI example]()
EXAMPLE 02
150 DPI: a different print scale
A different DPI value changes how pixel dimensions translate into physical print dimensions.
Visual metadata illustrations. The paired photos intentionally have the same pixels; these preview images are not DPI-converted downloads.
Pixels![300 DPI: no new detail invented — Pixels]()
DPI example![300 DPI: no new detail invented — DPI example]()
EXAMPLE 03
300 DPI: no new detail invented
A 300 DPI label does not make a small source high resolution. Check its pixel dimensions for your intended print size.
Visual metadata illustrations. The paired photos intentionally have the same pixels; these preview images are not DPI-converted downloads.
Frequently asked questions
Will setting 300 DPI improve the photo?
The setting alone will not. A larger, sharper source image contains more useful detail than the same small image with a different DPI tag.
Can I choose a value other than 300?
Yes. Enter a whole number from 1 to 1,200. Use the value requested by your print workflow.
Will it preserve all camera metadata?
No. The browser exports a fresh JPEG. Camera, location and other original metadata are not deliberately copied.
Are DPI and pixels the same thing?
No. Pixels are the image’s dimensions. The density setting relates those pixels to a suggested physical size.
What if I need centimetres rather than inches?
Convert the physical measurement to inches before using pixels-per-inch arithmetic: inches = centimetres ÷ 2.54. Confirm the result in your print software.
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