What are the benefits of Image DPI Converter?

One-click presets for common DPI values (72, 96, 144, 300, 600) plus custom input for any value you need.. Switch between metadata-only and pixel-resize modes to get exactly the conversion you want.. Fully browser-based with no server upload, so confidential images and client data stay private..

Is Image DPI Converter free?

Yes, it is completely free to use, and no registration is required. Tool processing happens entirely in your browser, and your input content and uploaded files are not sent to a server. Our first-party improvement metrics use no cookies, visitor IDs, or session IDs and store only normalized page paths and daily counts for fixed event IDs.

Image DPI Converter

Change image resolution to 300 DPI for print, 72 DPI for web, and more

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画像DPI変換

ファイルをドラッグ＆ドロップ

About Image DPI Converter

DPI (Dots Per Inch) determines how many dots are printed per inch when an image is output physically. A higher DPI means a smaller printed size for the same pixel count, while a lower DPI results in a larger print.

Common standards are 72 or 96 DPI for web display, 144 DPI for Retina screens, 300 DPI for commercial printing, and 600 DPI for high-quality publications. This tool provides both common presets and custom value input for any DPI you need.

Metadata-only mode: Keep pixel dimensions unchanged while rewriting the DPI value in the PNG's pHYs chunk. Perfect for adjusting resolution tags before submitting files to a print shop.

Pixel-resize mode: Scale pixel dimensions proportionally to match the target DPI while preserving physical output size. For example, converting a 72 DPI image to 300 DPI increases the pixel count but keeps the printed physical dimensions the same.

Ideal for designers, print shops, and photographers who need precise resolution control. Real-time display of physical dimensions in millimeters and inches lets you verify print sizes before downloading.

How to use Image DPI Converter

Drag and drop an image file onto the drop zone, or click to browse and select one.
Pick a preset (72 / 96 / 144 / 300 / 600 DPI) or type a custom value. Optionally check 'Resize pixels proportionally' to scale dimensions.
Review the physical size in mm / inches, then click the download button to save the converted PNG.

Benefits of Image DPI Converter

One-click presets for common DPI values (72, 96, 144, 300, 600) plus custom input for any value you need.
Switch between metadata-only and pixel-resize modes to get exactly the conversion you want.
Fully browser-based with no server upload, so confidential images and client data stay private.