Image DPI Converter — Change DPI Online Free
Change the DPI of any image to 72, 150, 200, 300, or 600 — or set a custom value. Choose metadata-only (no resize) or full pixel resampling for print. Free, no server upload.
✓ Free · ✓ No upload · ✓ Works offline in your browser
Drop image here or click to upload
JPG, PNG, WebP — processed locally in your browser
DPI Reference Guide
| DPI | Use Case | Quality |
|---|---|---|
| 72 DPI | Web, screen, digital display | Screen-only — not for print |
| 96 DPI | Windows screen default | Screen-only |
| 150 DPI | Large format, banners (viewed from distance) | Acceptable for large prints |
| 200 DPI | Newspapers, draft prints | Good for everyday prints |
| 300 DPI | Professional prints, photos, business cards | Industry standard |
| 600 DPI | Fine art prints, detailed technical drawings | Highest quality |
Frequently Asked Questions
How do I change the DPI of an image?
Upload your image above, choose your target DPI (72, 150, 200, 300, or 600), select whether to resample the image or just update the metadata, then click Convert DPI. Download the result instantly. The entire process runs in your browser — nothing is uploaded.
What is the difference between changing DPI metadata vs resampling?
Changing metadata only embeds a new DPI value in the image file without altering pixel count — the image looks identical but printers will interpret it at the new density. Resampling actually changes the pixel dimensions: for example, converting a 72 DPI image to 300 DPI with resampling will increase the pixel count by 300÷72 ≈ 4.17× to maintain the same physical print size.
What DPI do I need for printing?
Professional print standards: 300 DPI for standard prints, photos, brochures, and business cards. 150–200 DPI for large format prints like posters viewed from a distance. 72–96 DPI for screen and web display only. 600 DPI for fine art prints and detailed technical drawings.
Does changing DPI increase image quality?
Changing DPI metadata alone does not improve quality — it only tells devices how to interpret the existing pixels. Resampling to a higher DPI will upscale the image (increasing pixel count) but cannot recover detail that wasn't captured originally. For true quality improvement, use an AI upscaler.
Why does my image say 72 DPI?
Most cameras, smartphones, and web images default to 72 or 96 DPI — legacy screen resolutions. This is fine for digital display but insufficient for professional printing. Use this tool to change the DPI to 300 before submitting to a print shop.
Is my image uploaded when I convert the DPI?
No. The conversion happens entirely in your browser using the HTML Canvas API and JavaScript. Your image never leaves your device.