Free 30x40 mm Image Converter
Transform your images to perfect 30x40 mm compact format for ID photos and professional documentation
Upload Your Image
Drag & drop or click to select your image (Max 20MB)
Supports JPG, PNG, GIF, WEBP formats
Why Choose 30x40?
Perfect dimensions for your specific needs with professional results
Compact ID Photos
The 30x40 mm dimension provides a compact yet clear format for ID photos, perfect for cards and small documentation.
Space-Efficient Design
Perfect for applications where space is limited but image quality remains important, such as ID cards and badges.
Professional Portraits
Ideal for professional portrait photography in compact format, maintaining quality while saving space and costs.
Cost-Effective Printing
Smaller size means more photos per sheet, making it cost-effective for bulk printing and multiple applications.
Versatile Applications
Suitable for various applications including student IDs, membership cards, and small format professional photography.
Quick Processing
Smaller file sizes enable faster processing, uploading, and sharing while maintaining professional image quality.
Frequently Asked Questions
Everything you need to know about resizing images to 30x40
At 300 DPI (print quality), 30x40 mm equals approximately 354x472 pixels. At 150 DPI, it equals about 177x236 pixels. Use 300 DPI for professional printing.
While 30x40 mm can be used for some ID applications, most passport photos require 35x45 mm or larger. Check specific requirements for your intended use.
30x40 mm is commonly used for student IDs, membership cards, employee badges, and applications where space is limited but identification is needed.
Yes, 30x40 mm works well for compact professional headshots, business cards, and small format professional photography applications.
For professional quality, use 300 DPI (354x472 pixels). For web use, 150 DPI (177x236 pixels) is sufficient. Higher resolution ensures better print quality.
On an A4 sheet (210x297 mm), you can fit approximately 35-40 photos with minimal spacing, making it very cost-effective for bulk printing.
Yes, 30x40 mm is excellent for ID cards where space is limited. It provides clear identification while maintaining compact size for card applications.
For professional use: PNG or high-quality JPEG. For general use: JPEG with good compression. Choose format based on your specific application needs.
Yes, our image resizing tool is completely free to use. No registration required, no watermarks, and no hidden fees. Simply upload your image and resize it to your desired dimensions.
Absolutely! All image processing is done locally in your browser. Your images are never uploaded to our servers, ensuring complete privacy and security of your files.