Text Tool
Swap Cipher
Type text and it converts as you go. Each character swaps with its pair. The swap is its own reverse, so run the result through again to get the original back.
Example: fh_65dd38 ↔ wlan9a22c7. Characters not in the table are left unchanged.
From screenshot
Upload a screenshot and every code like fh_65dd38 in it is picked out and converted separately. Other text is ignored. Reading happens right here in your browser; the image never leaves your device.
Swap table
Each character on the left becomes the one on the right, and vice-versa.