Scan Duck

• scan A4-sized document
• merge pdf
• download link: https://drive.google.com/drive/folders/1MR5DzMS0IcuBu1PVKkdR09LsmuZqvPlp?usp=sharing

img2pdf converter

You may press q/ESC to exit anytime

1. Select the region to scan

i. Auto Detection Mode (Default or Press A in Manual Selection Mode)

• You can try to detect the A4 document by tuning/optimizing the parameters.
• You may press Enter to proceed to next stage once the region is selected.

ii. Manual Selection Mode (Press E in Auto Detection Mode)

• Select the corners in anticlockwise direction.
• Press Enter once selected.

2. Apply filter

Press Enter when done.

• Original
• Grayscale
• Binary (B&W) - You may tune the threshold.

3. Select saving location

combine multiple pdf

1. Select pdf files to combine
2. Make sure the combining order is correct
3. Save as

Credit:

• icon: https://iconarchive.com/show/square-animal-icons-by-martin-berube/Duck-icon.html