Browser-only DPI converter
DPI converter — set image to 300 DPI
Change the DPI of one image — or a whole batch — to 72, 150, 300, or 600, or any custom value, right in your browser. Set the DPI a form or print shop asks for, optionally resample to an exact print size, and download each JPG or PNG (or all of them as a ZIP) with the DPI written into the file.
Need an exact file size instead? Use the image compressor. Need exact pixels? Try the image resizer.
Kodotools Team · July 2026 · Files stay on your device
What DPI actually changes
DPI (dots per inch) is a tag that tells printers and forms how large an image should print. Setting DPI does not touch how the image looks on screen — it changes the print size and the value software reads. This tool writes the real DPI into the JPG (JFIF) or PNG (pHYs) file.
Who needs this tool?
People whose form, university, visa, or print order says "upload at 300 DPI", designers preparing print files, and anyone told their scan or photo is "low DPI" and needs it fixed before uploading.
JPG, PNG, WebP
Upload an image
to set its DPI
Upload an image to start.
Common DPI values
Which DPI should you pick?
Use the value your form or print job asks for. If you are unsure, 300 DPI is the safe default for anything that gets printed.
72 DPI
Classic screen and web value. Some old portals still ask for exactly 72 DPI.
150 DPI
Draft printing and large signage viewed from a distance. A middle ground.
300 DPI
The standard for forms, documents, passport photos, and quality prints.
600 DPI
High-detail scans, line art, and professional print jobs that ask for extra resolution.
Private by default
The DPI change happens on your device. Your image is never uploaded to a server.
No quality loss
When you keep the same format and pixels, the tool writes the DPI tag without re-encoding, so the image stays pixel-identical.
Print-size aware
Optionally set an exact print width and height in inches, cm, or mm, and the tool resamples the pixels to match the DPI.
How it works
Change image DPI in four steps
Upload
Drop a JPG, PNG, or WebP into the tool.
Pick DPI
Choose 72, 150, 300, 600, or a custom value.
Print size
Optionally set an exact print width and height.
Download
Save a JPG or PNG with the DPI written in.
FAQ
DPI converter questions
How do I change the DPI of an image?
Upload your image, choose a DPI (72, 150, 300, 600, or custom), and download. The tool writes the DPI value directly into the JPG or PNG file so any form, printer, or program reads the new DPI.
Does changing DPI reduce image quality?
No. If you keep the same format and do not resample, the tool only rewrites the DPI tag, so the pixels are untouched. Quality only changes if you choose to resample to a smaller print size.
How do I set an image to 300 DPI?
Upload the image and click the 300 preset (it is selected by default), then download. 300 DPI is the standard for printed documents, forms, and passport photos.
What is the difference between DPI and resolution?
Resolution is the pixel count (for example 1200×1800). DPI tells the printer how many of those pixels to pack into each inch, which decides the print size. The same pixels at 300 DPI print smaller and sharper than at 72 DPI.
Can I change DPI without resizing the pixels?
Yes. Leave "Resample to a print size" unchecked and the tool keeps every pixel exactly as-is, only updating the DPI metadata.
Can I change the DPI of multiple images at once?
Yes. Drop in as many images as you like, pick one DPI, and the tool applies it to all of them. A single image downloads on its own; multiple images download together as a ZIP.
Are my images uploaded to Kodotools?
No. Everything runs in your browser. Your image stays on your device unless you upload it somewhere yourself after downloading.
Guides
Format decisions, made practical
Private conversion workflows for JPG, PNG, WebP, HEIC, SVG, and strict upload limits.
Ready to change your image DPI?
Jump back to the converter and export browser-made files in seconds.
Set image DPI →