Free Online Text & Data Converter Tools
Transform structured data between formats: convert CSV to JSON for APIs, YAML to JSON for configuration, Markdown to HTML for publishing, or JSON to CSV for spreadsheets. All transformations happen instantly in your browser using native TypeScript — no WASM, no server, sub-millisecond for most files.
All Text & Data Tools
JSON Formatter
Format, beautify, and validate JSON in your browser. Paste minified JSON and get pret…
JSON to CSV
Convert a JSON array to CSV format instantly. Paste your JSON array and download a sp…
CSV to JSON
Convert CSV spreadsheet data to JSON format. Paste CSV with a header row and get a JS…
YAML to JSON
Convert YAML configuration files to JSON format. Supports nested objects, arrays, anc…
XML to JSON
Convert XML data to JSON format in your browser. Handles attributes, nested elements,…
Markdown to HTML
Convert Markdown to HTML in your browser. Supports GFM: tables, task lists, fenced co…
HTML to Markdown
Convert HTML to clean Markdown format. Paste HTML from websites, emails, or CMS expor…
Case Converter
Convert text between uppercase, lowercase, title case, camelCase, snake_case, kebab-c…
Word Counter
Count words, characters, sentences, and paragraphs. Estimate reading time. Paste any …