It's supports text/code diff upto 25k lines with character level diff all in browser. Supports one of the best inhouse diff merge feature.
https://diffchecker.dev/
Now, add list diff - to compare two lists and show unique, common and diff between two lists.
https://diffchecker.dev/list/
Add json diff, supports semantic json difference.
https://diffchecker.dev/json/
With consistent, clean, minimal UI elements.
Would you switch from other websites. Please checkout and provide feedback.