Difference Checker (String)
Highlight the character-level difference between two strings, live as you type.
Highlights the character-level difference between two strings, live as you type — struck-through red is removed, green is added. Runs entirely in your browser.
What is Difference Checker (String)?
Type two strings and see exactly which characters differ between them, highlighted live — useful for spotting a subtle typo or whitespace difference that's hard to see by eye, like two API keys or two similar-looking usernames. A single invisible trailing space or a lookalike character (0 vs O, l vs I) can cause a maddening bug that's nearly impossible to spot by reading two strings side by side. Highlighting the exact differing characters makes it obvious in a glance, computed live in your browser as you type.
FAQ
Text Compare works line-by-line, for comparing paragraphs or files; this works character-by-character, for comparing two short strings where the difference might be a single character.
No — the comparison runs entirely in your browser via JavaScript.