DPI converter
Change the DPI of a JPG or PNG to 72, 150, 300 or any value. Pixels and quality stay the same. Free, private, no upload.
Drop an image here, click to browse, or paste
Supports JPG and PNG
Everything you need to change image DPI online
Change DPI to any value
Set 72, 96, 150, 300 or 600 DPI with one click, or enter a custom value up to 2400 for a print shop that asks for something specific.
Pixels and quality stay identical
DPI is a tag stored in the file, not part of the picture. The tool rewrites that tag only, so width, height and quality do not change and nothing is re-compressed.
See the print size
Before you download, see how large the image prints at the DPI you picked, in inches and centimetres, so a 300 DPI request for a 4 x 6 print is easy to check.
100% private, no upload
Your image never leaves your device. The file is read and rewritten in your browser, with no server, no account and nothing stored.
JPG and PNG, same format out
A JPG stays a JPG and a PNG stays a PNG. The tool updates the JFIF and EXIF resolution of a JPG and the pHYs chunk of a PNG.
Instant, even for large files
Because no pixels are decoded or re-encoded, a 40 MB photo is processed as fast as a small icon.
Three steps to a new DPI
- 1
Upload your image
Drag a JPG or PNG onto the page, click to browse, or paste from your clipboard. The tool shows the DPI already saved in the file and its pixel size.
- 2
Pick the new DPI
Choose 72, 96, 150, 300 or 600 DPI, or type any value from 1 to 2400. The print size in inches and centimetres updates as you choose.
- 3
Download your image
Download the same image with the new DPI saved inside it. Nothing is uploaded: the change is made in your browser.
When you need to change an image's DPI
Print shops, application forms and layout software all read the DPI saved in your file. Set it to the value they ask for in seconds.
Meet a print shop's 300 DPI rule
Photo labs, poster printers and print-on-demand sites often reject files tagged 72 DPI. Re-tag the file at 300 DPI and upload it again.
Submit documents and forms
Passport photo, ID and application portals sometimes ask for a scan at a set DPI. Set the tag to match without touching the picture.
Fix photos saved at 72 DPI
Screenshots and web exports are usually tagged 72 or 96 DPI. Change the tag so design and layout software places them at the print size you expect.
Prepare files for Word and InDesign
Layout software uses a file's DPI to decide how big it appears when placed. Set it first, and the image drops in at the right size.
Frequently asked questions
Does changing DPI change image quality or pixel size?
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No. DPI (dots per inch) is a number saved in the file that tells printers and layout software how large to print the pixels. Changing it does not resize, resample or re-compress the image, so the picture is exactly the same. If you need more or fewer pixels, use the Resize tool instead.
Why does a 300 DPI image look the same as a 72 DPI one on screen?
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Screens show one image pixel per screen pixel and ignore DPI. The setting only matters when you print the image or place it in layout software, where it sets the physical size: a 3000 px wide image prints 10 inches wide at 300 DPI, but about 41.7 inches at 72 DPI.
Will this make a low-resolution image print sharper?
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No. A 600 px wide photo tagged 300 DPI still only has 600 pixels, so it prints about 2 inches wide at that DPI. Raising the tag does not add detail. To print larger without blur you need a higher-resolution original or an upscaler.
Which file types does the DPI converter support?
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JPG (JPEG) and PNG. A JPG stays a JPG and a PNG stays a PNG. For WebP, HEIC or other formats, convert to JPG or PNG with the Convert tool first, then change the DPI.
Is it free, and is my image uploaded anywhere?
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It is free with no limits or account. Your image is never uploaded: the file is read and rewritten in your browser and only saved to your device.
What DPI should I choose?
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Use 300 DPI for photo prints and most print shops, 150 DPI for large posters viewed from a distance, and 72 or 96 DPI for screen use. If a form or printer names a specific number, use that.
Can I check what DPI my image has now?
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Yes. When you upload a file, the tool shows the DPI saved in it. If it shows Not set, the file carries no DPI tag, which is common for images exported from some apps.
Change your image's DPI now
Free, instant, no account needed.