Resize in Millimeters
Resize images using millimeter dimensions for professional print.
How to Use Resize in Millimeters
- Upload your file: Drag and drop your file into the active processing area above, or click the box to browse your device files.
- Configure settings: Select your preferred options (such as target file size in KB, compression level, page order, or output format).
- Process locally: Click the primary action button. Your file is rendered and encoded in seconds directly inside your browser memory.
- Download output: Click Download to save the modified document back to your device. No watermarks are added.
Zero-Cloud Privacy Guarantee
Unlike legacy web utilities that upload your sensitive documents to remote servers, PDFtiny executes 100% of processing inside your local browser using WebAssembly. Your files never leave your computer, ensuring complete privacy, enterprise compliance, and offline availability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Processing Engine | Client-Side WebAssembly (WASM) & HTML5 File API |
| Server Transmission | 0 Bytes Uploaded (100% Local Browser Memory) |
| Device Compatibility | Chrome, Safari, Firefox, Edge, Android, iOS, Windows, Mac, Linux |
| Compliance | ISO 32000-2:2020, GDPR Article 25 (Privacy by Design) |
Frequently Asked Questions
How do millimeters convert to pixels for printing?
Pixels = (Millimeters / 25.4) × DPI. For instance, an Indian passport photo of 35×45 mm at 300 DPI translates to approximately 413×531 pixels.
What millimeter presets are available for international visas?
Presets include 35×45 mm (India, UK, Schengen, Australia, Canada visa), 50×50 mm (US 2x2 inch visa/passport), 33×48 mm (China visa), and custom millimeter dimensions.
Does resizing in mm alter photo sharpness?
PDFtiny calculates exact pixel grids with bicubic sampling, ensuring fine facial details, eyelashes, and ears remain razor-sharp for biometric scanning.
Can I check the resulting file size in KB after resizing in mm?
Yes, live KB indicators show your final file size to ensure compliance with online visa upload limits.