Our DPI adjustment tool supports batch image resolution adjustment, suitable for printing and professional use. You can customize target DPI values and adjust image physical dimensions to meet different printing needs. Suitable for photography printing, design output, document image processing and other scenarios, helping you achieve high-quality printing results.

Supports both centimeters and inches. You can adjust the physical width and height of images as needed, and the system will automatically calculate the corresponding pixel size to ensure printing results meet expectations.

zh:核心优势

• ✓Batch DPI Adjustment: Supports adjusting DPI for multiple images simultaneously, improving efficiency
• ✓Custom DPI Values: Can adjust target DPI according to printing needs, such as 300 DPI, 600 DPI, etc.
• ✓Physical Size Adjustment: Supports centimeter and inch units to adjust image physical width and height
• ✓Real-time Calculation: Automatically calculates adjusted pixel size to ensure printing results meet expectations
• ✓Local Processing: All adjustment operations are completed in the browser to protect privacy

What is DPI?

DPI (Dots Per Inch) represents the number of pixels per inch and is a unit for measuring image resolution. Higher DPI means richer image details and better printing results, but also larger file sizes.

How much DPI is needed for printing?

Generally, regular printing requires 300 DPI, high-quality printing requires 600 DPI, and professional printing may require higher DPI values. It depends on the printing equipment and print size.

Will adjusting DPI affect image quality?

Adjusting DPI itself does not affect pixel quality, but if you also adjust physical dimensions, it may cause image stretching or compression, affecting visual effects. It is recommended to maintain appropriate physical dimension ratios when adjusting DPI.