Free text and data tools
Format structured data, transform text, compare content, and convert common developer formats in the browser.
Text and Data Tools
Base64 Encoder/Decoder
Encode, decode, normalize, and inspect standard or URL-safe Base64 with padding and data URL controls.
Add Prefix or Suffix to Lines
Add text before or after every line, with quick Markdown bullet and HTML list presets.
List Separator Converter
Convert lists between line breaks, commas, spaces, tabs, semicolons, pipes, or custom separators.
Character Counter
Count characters first, then inspect words, lines, paragraphs, bytes, selected text, reading time, limits, and top words.
Text Case Converter
Convert text to uppercase, lowercase, title case, sentence case, capitalized words, inverse case, alternating case, and developer naming formats.
URL Encoder/Decoder
Encode, decode, batch-process, and parse URL components, query strings, paths, and form values.
Text Diff Checker
Compare text by words, lines, or characters with ignore options, summary counts, and unified diff copy.
Regex Tester
Test regular expressions against text, inspect matches and groups, and preview replacements.
JSON Formatter & Validator
Format, validate, sort, minify, inspect errors, and preview JSON as a tree with structure stats.
YAML, TOML & XML Formatter
Format and validate YAML, TOML, and XML, with parsed JSON previews for structured data.
CSV to JSON Converter
Convert CSV to JSON or JSON arrays back to CSV with headers, delimiters, and proper quoted fields.
Fast transformations without a full editor or script
These tools are designed for focused copy-and-paste workflows. Choose the utility that matches the source format, review the result, and avoid pasting secrets or regulated data into any browser tool unless the page clearly documents its processing model.