Image DPI Converter

1. Upload your image (JPG, PNG, or TIFF).
2. Enter the target DPI (e.g., 300).
3. Click 'Change DPI' — takes 1-3 seconds.
4. Download the adjusted image — DPI metadata updated, pixels unchanged.

DPI is metadata that tells printers how large to render an image — not a property of the image data itself. Changing DPI to 300 without resampling keeps pixels intact and just updates the metadata.

Many publishers, print shops, journals, and photo labs require images at a specific DPI (usually 300 DPI for print, 150 DPI for standard magazines, 72 DPI for web). But DPI is not a quality metric — it's metadata. A 3000-pixel-wide image is 300 DPI at 10 inches, 150 DPI at 20 inches, or 72 DPI at 41 inches. Changing the DPI tells the printer how large to render the image — the pixel data stays untouched unless you explicitly resample.

The tool reads the image's pixel dimensions, then rewrites the DPI metadata tag to your target value (300, 150, 72, etc.). The pixels are preserved exactly — no resampling, no quality loss. The output file looks identical to the original on screen but reports the target DPI to any application.

• Converting 72 DPI web images to 300 DPI for print submission.
• Meeting journal requirements (usually 300 DPI).
• Preparing photos for photo labs (usually 300 DPI).
• Adjusting DPI for academic publications.
• Meeting book publisher requirements.
• Preparing images for archival (600 DPI for fine art).
• Fixing DPI after scanning at wrong settings.

Changing DPI is metadata-only — the pixels are untouched, so there is zero quality loss. The image looks identical on screens and prints at the same physical size (because pixel dimensions don't change). Only the print size interpretation changes.

• DPI is metadata — changing it doesn't add pixels or detail.
• Printing a low-resolution image at high DPI still looks blurry.
• Web images ignore DPI entirely (pixel dimensions matter).
• Photoshop, GIMP, and other editors may re-interpret DPI on save.
• For true resolution changes, use an image resizer instead.

• Output opens in every image viewer, editor, and OS.
• Printer drivers respect the new DPI metadata.
• Photo labs accept the images (they check DPI).
• Metadata preserved for professional workflows.
• Standard image formats — no special software needed.

• 300 DPI is the print standard for most purposes.
• 150 DPI works for magazines and newsletters.
• 72 DPI is screen-only — never submit it for print.
• Changing DPI doesn't add pixels — a low-res image stays low-res.
• Some editors re-interpret DPI on save — check your workflow.

Image still looks blurry after changing DPI

DPI is metadata — changing it doesn't add detail. For a sharper print, you need a higher-resolution source or an image upscaler.

DPI reverts after opening in Photoshop

Photoshop may re-interpret DPI on save. Lock the DPI in Photoshop's Image Size dialog (uncheck Resample) before saving.

Printer ignores the DPI

Most modern printers auto-fit to paper size. To respect DPI, use 'Actual Size' or '100%' scale in the print dialog.

• Adobe — Understanding DPI and PPI
• ISO 5-4:2009 — Photography Density measurements