Text & Code Processing

Process text and code.

Regex testing, Markdown preview, text comparison, case conversion, SQL formatting, and code validation.

searchREGEX

Regex Tester

Match and replace with $1/$<name>/$&, plus a pattern library and flags cheat sheet.

→edit_noteMARK

Markdown Editor

Live Markdown preview with GFM tables. Copy sanitized HTML. Nothing uploaded.

→compare_arrowsSTRI

String Diff

Word or character highlight. Compare two texts in the browser.

→text_formatSTRI

String Case

Convert text between different case formats.

→storageSQL-

SQL Formatter

Format SQL queries for easier reading.

→codeLUA-

Lua Beautifier

Beautify Lua code with simple indentation.

→terminalJS-R

JS Runner

Run JavaScript snippets in a secure sandbox — no DevTools needed.

→javascriptJAVA

JavaScript Validator

Check JavaScript syntax without executing code.

→htmlHTML

HTML Viewer

View and preview HTML with CSS and JS live in your browser.

→terminalSOUR

Source Code Viewer

View source code with line numbers.

→data_objectXML-

XML Viewer

Format and inspect XML markup.

→ruleXML-

XML Validator

Validate XML markup in the browser.

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About Text & Code

Text processing and code formatting are daily tasks for developers. These tools help you test patterns, compare changes, format code, and validate syntax — all locally in your browser.

  • Regex tester — Match or replace with $1 and $<name>, load common patterns, and open a flags cheat sheet.
  • Markdown editor — Live GitHub Flavored Markdown preview with tables. Copy sanitized HTML.
  • String diff — Compare two texts and see word-by-word or character-by-character differences.
  • Code formatters — Format SQL, Lua, and other code with proper indentation and structure.
  • Validators — Check JavaScript, XML, and HTML syntax before running or deploying.