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Encode or decode ROT13: every letter shifts 13 places. The same operation encodes and decodes.
The result appears here as you type.
Plain text to hide a spoiler or punchline, or ROT13 text to read it.
ROT13 is its own inverse: run the result through again (Use as input) and you get the original.
No. It's trivially reversible and offers no security. It's a convention for hiding spoilers, puzzle answers, and punchlines from a casual glance. Never use it for passwords or sensitive data.
Only the 26 English letters A–Z change, and case is kept. Digits, punctuation, spaces, accented letters, and emoji pass through unchanged.
No. Everything runs in your browser, and nothing you paste is sent to a server or stored.
Text & code
Compare two texts or code files side by side, with changed words highlighted. Ignore whitespace or case, and export a unified .diff patch that git apply accepts.
Count
Count words, characters, sentences, paragraphs, and lines as you type, with reading and speaking time. Check text against X, SEO title, and meta description limits.
Case
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and more, line by line.
Cleanup
Clean up messy text: remove extra spaces, blank lines, invisible characters, and HTML tags, straighten quotes, and rejoin hard-wrapped lines.
Lines
Delete repeated lines from a list and keep the original order. Choose case sensitivity, whether to ignore surrounding spaces, and whether to keep the first or last copy.
Lines
Delete blank lines from text, or collapse runs of blank lines down to one so paragraphs stay separated.