Merge ID Card Front and Back
Place the front and back of an ID card on one A4 page, ready to print or send as a single file.
Redaction & masking Client-side Canvas layout / pdf-lib
Tool preview
How to use it
- 01
Drop the front image and the back image.
- 02
Press combine.
- 03
Download the A4 PNG and print it at 100 percent.
Limitations
- ! Images are scaled to 80 percent of the page width; unusual aspect ratios leave white space.
- ! Output is 150 DPI, which is fine for printing but not for high-resolution archival scans.
FAQ
What page size is produced?
A4 portrait at 1240 by 1754 pixels, which is 150 DPI.
Can I add a watermark first?
Yes, run the ID watermark tool on each side, then combine them here.
Are the images uploaded?
No, the page is composed on a canvas in the browser.
Files never leave your device
Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.
Technical details
- Processing
- Client-side
- Implementation
- Canvas layout / pdf-lib
- Category
- Redaction & masking
- Network requests
- None while processing