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Change image DPI

Set 300 DPI, 200 DPI or any value. Pixels stay the same unless you choose a print size.

Preset

Drop images here, or paste with Ctrl+V

JPG, PNG, WebP, GIF or HEIC. Several at once is fine.

Settings size, KB limit, format, DPI
1 to 100, empty = automatic

    Your images are processed on this device and never uploaded.

    Crop image

    Drag the box to move it and the corners to resize. With the box focused, arrow keys move it and Shift+arrow keys resize it.

    Example with a real photo

    We ran this tool on the photo below. These are the real results.

    Original3024 × 4536 px · 2.23 MB · JPG
    Result3024 × 4536 px · 1.75 MB · JPGShown smaller here; the numbers are for the full file.

    Photo: Unsplash

    What this page does
    What changesThe DPI value stored in the file
    What staysWidth and height in pixels (unless you enter a cm or inch size)
    FormatsJPG and PNG (WebP has no DPI field)

    How to use it

    1. Pick the DPI your form or printer asks for.
    2. Drop the image.
    3. Download. The new DPI is written into the file.

    What DPI actually does

    DPI (dots per inch) tells printers how large to print an image. A 600 × 600 pixel photo at 300 DPI prints at 2 × 2 inches; the same pixels at 200 DPI print at 3 × 3 inches. On screen, the DPI makes no difference at all.

    Some forms check the DPI value, often asking for 200 or 300 DPI. This tool rewrites that value without touching the pixels, so there is no quality loss.

    Changing DPI and size together

    If your form gives a size in centimetres or inches plus a DPI, open Settings, choose cm or in as the unit, and type the size. The tool calculates the pixels from the DPI. You can add a KB limit at the same time.

    Questions

    Will changing DPI make my photo sharper?

    No. Sharpness depends on the number of pixels. Changing DPI only changes the print size label.

    How can I check the DPI of my file?

    On Windows, right-click the file, choose Properties > Details and look at Horizontal resolution. On a Mac, open it in Preview and choose Tools > Show Inspector.

    Is my photo uploaded to a server?

    No. The resizing runs inside your browser with JavaScript, so the image never leaves your device. Once the page has loaded, resizing keeps working even if you go offline.