Resize Image in MM
Dial in millimeter dimensions for IDs, stamps, and small prints. High DPI support and crop preview keep details sharp.
Upload Your Image
Drag & drop or click to select your image (Max 20MB)
Supports JPG, PNG, GIF, WEBP formats
Millimeter Level Precision
Fine grained controls built for small format print requirements.
Millimeter precision input
Enter exact millimeter dimensions to match ID photos, stamps, and micro labels without guessing or rounding in external tools. Perfect for compliance driven outputs.
Small print readiness
Keep tiny print outputs consistent by pairing mm dimensions with DPI so text and edges remain crisp at small sizes. Avoids soft or fuzzy prints.
High DPI control
Select higher DPI values when you need sharp detail on badges, product tags, or photo inserts without manual calculations. Ideal for small typography.
Ratio lock for tiny assets
Lock aspect ratio to avoid distortion when resizing small graphics, ensuring icons and faces stay proportional. This keeps subjects centered.
Crop aware preview
The preview shows the crop window when ratios differ, letting you drag the image to keep key details visible at mm sizes. Useful for IDs and badges.
Local processing privacy
Files never leave your device, so sensitive ID photos and client assets stay private while you resize. This is useful for sensitive documents.
Resize in MM in Three Steps
Upload, set millimeter size and DPI, then download.
Upload the source file
Add your image and the preview opens so you can check composition before setting mm dimensions. This helps avoid rework.
Enter mm and DPI
Input millimeter width and height, select the DPI you need, and lock the ratio to keep proportions intact. The values update in real time.
Download the output
Export the resized file in the format you need, ready for small prints, tags, or ID layouts. Share with your printer directly.
Resize Small Formats with Confidence
Get accurate millimeter sizing with DPI control and clear previews. Export sharp, small format files directly from your browser.
Millimeter Resize FAQ
Helpful answers for precise mm based resizing.
Millimeters are best for small items like ID photos, stamps, and product labels where tiny differences matter. Using mm keeps the physical size explicit and avoids confusion. It also helps when regulations require exact mm sizing.
The tool converts your mm inputs into pixels based on the selected DPI. Because pixels are whole numbers, tiny rounding can occur, but the output stays aligned with the intended physical size. Verify the values in the preview.
You can resize to the required mm dimensions, but each country has its own rules for framing and background. Use the official guidelines and verify the crop in the preview before export. Always verify background and headroom rules.
Higher DPI values like 300 or 600 keep fine details and text crisp at small sizes. Choose the DPI specified by your printer or service to avoid rejection or soft output. Use the spec from your printer if available.
Yes, but start with a high resolution source. Use PNG for graphics and text, lock the ratio, and choose a high DPI to preserve edges when sizing down to mm dimensions. Keep the quality slider high for text.
If the target mm ratio does not match your original, cropping is required. The preview highlights the crop frame so you can reposition the image and keep important details visible. Drag until the framing is correct.
Yes. Choose PNG as the export format when you need transparent backgrounds for labels or layered design work. JPG is better for photos when file size is a concern. It preserves transparent edges for overlays.
No. Processing happens locally in the browser, so files are never uploaded or saved on a server. This keeps sensitive ID images private. Files are not sent to any server. It can run offline after the page loads.
Yes. You can use the tool for free without creating an account, entering a credit card, or installing software. There are no usage caps or watermarks, so you can edit as many images as you like and download full-quality results any time.
No. All processing happens locally in your browser, which means files stay on your device and are never sent to our servers. Once you close the tab, nothing is stored on our side, making it safe for personal and client work.