Compare two text blocks and highlight added, removed, and unchanged lines.
Compare two text blocks and highlight added, removed, and unchanged lines.
Original / Changed: Original: JSON tool Changed: JSON formatter tool
Diff: - JSON tool + JSON formatter tool
Text Diff processes this example in the browser and lets you inspect the result before copying it.
Original / Changed: timeout=30 timeout=45
Diff: - timeout=30 + timeout=45
Text Diff processes this example in the browser and lets you inspect the result before copying it.
Original / Changed: Free JSON tool Free JSON formatter
Diff summary: Changed line highlights the added word.
Text Diff processes this example in the browser and lets you inspect the result before copying it.
This tool processes your input locally in your browser. Your text, code, file, or generated value is not uploaded to LumaTool servers.
Use Text Diff for focused browser-based checks and cleanup tasks.
Prepare text, values, or technical data before pasting it into another system.
Inspect edge cases without installing desktop software.
Yes. Text Diff is available as a free LumaTool web tool.
No sign-in is required for the public tool pages.
No. This tool processes input locally in your browser.
Yes. The editor, buttons, and result areas are designed for mobile and desktop browsers.
Ready tools include copy actions, and file-oriented tools include download actions where useful.
Text Diff is useful for focused text tools tasks where you need a quick browser-based result without switching tools.
This tool processes your input locally in your browser. Your text, code, file, or generated value is not uploaded to LumaTool servers.
Yes, but review the result before applying it to production systems. LumaTool helps with utility work, validation, and formatting, but final decisions stay with you.
Remove duplicate lines from text instantly. Supports keeping original order, removing empty lines, case-insensitive matching, and trimming whitespace.
Use Now WCount characters, words, lines, paragraphs, reading time, and CJK characters.
Use Now CConvert text to uppercase, lowercase, title case, camelCase, PascalCase, kebab-case, and snake_case.
Use Now LGenerate placeholder paragraphs, sentences, and words for mockups.
Use Now MWrite and preview Markdown online. Supports headings, lists, tables, code blocks, blockquotes, links, and common Markdown syntax.
Use NowAlso building video workflows? The YouTube subtitle extension is in development.