Current DPI
—
Output DPI
300
Select target DPI
Image size: — — pixels are not changed, only the pHYs metadata chunk
Processed locally in your browser — no upload to server
Change the DPI metadata of any PNG from 72 to 300 DPI — without touching a single pixel. Fix files rejected by Printify, Redbubble, and other POD platforms instantly.
Drop PNG here or click to upload
Pixels are unchanged — only DPI metadata is modified
How to use
Step 01
Upload your PNG
Drop any PNG file — typically a 72 DPI file that was rejected by a POD platform.
Step 02
Check current DPI
The tool reads and displays your file's current DPI metadata automatically.
Step 03
Select 300 DPI
Choose 300 DPI for Printify, Redbubble, Merch by Amazon, or any standard print platform.
Step 04
Download
Get your fixed PNG instantly. Pixels are completely unchanged — only the metadata is updated.
FAQ
Does changing DPI affect image quality?
No. DPI is just metadata — a number stored in the file header that tells printers how large to print the image. Changing it does not touch any pixels. The image looks identical before and after.
Why does Printify / Redbubble say my image is too low quality?
Many POD platforms check DPI metadata and reject files below 150 or 300 DPI. Even if your image is large enough in pixels, a 72 DPI tag can trigger rejection. This tool fixes that instantly.
What DPI should I use for print-on-demand?
300 DPI is the industry standard for most POD platforms including Printify, Redbubble, and Merch by Amazon. Use 600 DPI only for very high-quality fine art prints.
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