Convert Image to 300 DPI
300 DPI is the number almost every passport office, visa centre, and print submission portal asks for, and this tool writes exactly that value into your image in one step — no settings to choose. It is worth understanding what the requirement actually means, because it trips people up constantly: "35 × 45 mm at 300 DPI" is really a pixel requirement in disguise (413 × 531 pixels). This tool sets the DPI field; it does not change your pixel dimensions. If your photo already has enough pixels, that is all you need. If it does not, you will need a higher-resolution original — the checks below tell you which situation you are in.
Target DPI
300 DPI is standard for documents and passport photos. 600 DPI for high-quality print.
Drag & drop your file here
or click to browse
JPEG, PNG, TIFF · Max 20MB
How it works
Upload your image.
The tool sets the DPI metadata to exactly 300.
Download your 300 DPI image, ready for document submission.
Why use this tool
Passport and visa applications commonly require exactly 300 DPI.
Many print labs and submission portals reject images below 300 DPI.
No Photoshop or specialist software needed.
If the result is not what you expected
My passport photo was rejected even at 300 DPI
Check the pixel dimensions, which is what most systems actually validate. For a 35 × 45 mm photo you need 413 × 531 pixels; for a 51 × 51 mm US photo, 600 × 600. If your image is smaller than that, the DPI tag will not save it — you need a higher-resolution photo. If it is larger, crop it to the right proportions with Resize Image Online, or use the country-specific tool on the matching passport page, which crops to the correct size automatically.
Nothing about the image looks different
Correct — DPI is metadata describing print size, not picture content. The file is unchanged visually; only the number a printer reads has changed. You can confirm it worked by checking the file's properties or info panel.
I need a different DPI value
This page always sets exactly 300 because that is what the overwhelming majority of submissions require. For 150 or 600, use Increase Image DPI, which lets you pick.
The form wants a specific file size in KB as well
Many visa portals cap file size alongside the dimensions. Set the DPI here first, then run the result through Compress Image Online to bring the file size down — do it in that order, since re-compressing can strip the metadata you just set.
Frequently asked questions
- No. Setting DPI adjusts the print metadata only. Pixel dimensions remain unchanged.
- Possibly. If the rejection was purely about the DPI metadata value, yes. If the image itself is low quality or the wrong size in pixels, you may also need to resize.