300 DPI Converter
Choose a JPG or PNG to check its current DPI and save a 300 DPI copy. If it needs more pixels for your print size, upscale it below.
See sample results
Check DPI and save a 300 DPI copy for free — done in your browser.
DPI Metadata vs. Real Pixels
Changing DPI does not add pixels
A DPI converter changes the print-resolution mark in the file. It does not add detail or make the image sharper.
Print size equals pixels divided by DPI
At 300 DPI, a 1200 × 1800 px image prints at 4 × 6 inches. The pixel dimensions stay the same when you change its DPI mark.
Upscale when the print needs more pixels
For a print larger than your image's pixel dimensions divided by 300, use AI upscaling to create a larger image file.
When to Change the DPI Mark or Upscale
If a print shop only checks the file's DPI metadata, changing the mark is enough. If your print needs more pixels than your image has at 300 DPI, upscale to create real pixels.
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300 DPI Converter — Common Questions
How do I change an image to 300 DPI?
Choose a JPG or PNG above, check its current DPI, then select Download as 300 DPI. The file is updated in your browser.
Will changing an image to 300 DPI make it sharper?
No. Changing DPI updates print metadata, but the image's pixel width, height, and detail stay the same. To prepare a larger print, you need more pixels from an upscaled image.
How can I check an image's current DPI?
Choose the JPG or PNG in this converter. It reads the image's DPI metadata in your browser and displays its pixel dimensions.
Is my image uploaded, and which formats are supported?
You can check DPI and save a 300 DPI copy for JPG and PNG files. Other formats, such as WebP, can still be upscaled. DPI checks and 300 DPI copies are made in your browser; your image is uploaded only if you choose to upscale it.
How many pixels do I need for an 8 × 10 inch print at 300 DPI?
You need 2400 × 3000 pixels: multiply each print dimension in inches by 300.
My Canva design or phone photo says 72 DPI. Do I need to change it?
Check its pixel dimensions and your intended print size. If the pixels are enough at 300 DPI, changing the metadata mark is sufficient; the number 72 alone does not mean the image has fewer pixels.
Can I change a PNG image to 300 DPI?
Yes. This converter updates the PNG's print-resolution metadata without re-encoding its image pixels.