Set a photo or scan to 72, 150, 200, 300 or 600 DPI for forms and printing. How it works: Choose one or more JPG or PNG images (other formats are converted to JPG). Select the DPI you need, such as 200 or 300. Optionally enter a print size in centimetres to resize the image to match.
About the Change Image DPI
DPI (dots per inch) tells printers and some online forms how large an image should be printed. Many application portals and printers ask for photos or signatures at a specific DPI, such as 200 or 300, and reject files that report 72 or 96 DPI even when the picture itself is sharp.
This tool writes the DPI you choose into the file. For JPG and PNG the change is lossless: only the resolution field in the header is updated, so the pixels and quality stay the same. You can also resize to an exact physical size, for example 3.5 × 4.5 cm at 300 DPI. Everything happens in your browser: the file never leaves your phone or computer, is not uploaded to any server and is not stored by News Appite.
How to use the Change Image DPI
- Choose one or more JPG or PNG images (other formats are converted to JPG).
- Select the DPI you need, such as 200 or 300.
- Optionally enter a print size in centimetres to resize the image to match.
- Press "Change DPI" and download the files.
Tips & benchmarks
- Changing DPI alone does not add detail; it only changes the printed size. A 600 × 600 pixel image is 2 × 2 inches at 300 DPI.
- For sharp prints, aim for at least 300 DPI at the final printed size.
- Check the result with Windows File Properties → Details, or macOS Preview → Tools → Show Inspector.
Frequently asked questions
Does changing DPI reduce quality?
No. For JPG and PNG the tool only rewrites the resolution value in the file header; the image data is not re-compressed.
What is the difference between DPI and pixels?
Pixels are the actual image size (for example 1200 × 1600). DPI says how many of those pixels should be printed per inch, so it decides the physical print size.
How do I make a photo 300 DPI for a form?
Choose 300 DPI and, if the form specifies a size such as 3.5 × 4.5 cm, enter it in the size fields so the pixel dimensions match too.
Which formats are supported?
JPG and PNG keep their format; WebP, BMP, GIF and HEIC are converted to JPG with the new DPI.
How can I change the DPI of an image online?
You can change the DPI of an image online using our tool, which allows you to set a photo or scan to 72, 150, 200, 300 or 600 DPI for forms and printing. Simply choose your image, select the desired DPI, and press 'Change DPI' to download the updated file. The process happens entirely in your browser, without uploading or storing your file on any server.
Can I change the DPI of an image without changing its size?
Yes, you can change the DPI of an image without changing its size using our tool. The tool updates the resolution field in the image header, which means the pixels and quality of the image remain the same, only the reported DPI is updated. This is a lossless process for JPG and PNG files.
How do I change the DPI of an image to 200?
To change the DPI of an image to 200, simply use our tool and select 200 as the desired DPI. You can then optionally enter a print size in centimeters to resize the image, or leave it unchanged. Press 'Change DPI' to download the updated file.
Can I change the DPI and size of an image at the same time?
Yes, you can change both the DPI and size of an image using our tool. After selecting your desired DPI, you can enter a print size in centimeters to resize the image to match. The tool will then update the DPI and resize the image accordingly, allowing you to download the updated file.
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All tools on News Appite are free to use for personal and commercial work. Calculations and file conversions are performed in your browser; the redirect and cache checkers make a single request to the URL you enter and store nothing. Found a bug or want a new tool? Tell us.