Image DPI Changer - Free Online Tool | PivaBox

Change image DPI metadata — adjust print resolution without affecting pixels

How to Change Image DPI Metadata

1. Upload a JPEG or PNG image by clicking the upload area or dragging and dropping.
2. Review the detected current DPI and select a new DPI value from the presets or enter a custom value.
3. Click Change DPI to update the metadata, review the print size change, then Download the modified image.

Frequently Asked Questions

Does changing DPI affect image quality?

No, DPI is just metadata stored in the file header. It does not change the actual pixel data. Only the print size calculation is affected — the image pixels remain identical.

Why would I need to change DPI?

Changing DPI is useful for preparing images for print, meeting submission requirements (e.g., 300 DPI for journals), or correcting incorrect DPI metadata in images from certain cameras or software.

What formats are supported?

The DPI Changer supports JPEG (EXIF metadata) and PNG (pHYs chunk) formats. Processing is done entirely in your browser — no upload to any server.