Convert JSON into NDJSON instantly. Paste your JSON data into the input pane, and valid NDJSON is generated in real-time as you type.
The converter parses the incoming JSON into a standard data structure, then immediately stringifies it out as NDJSON. If your input contains syntax errors, the output will pause and display the error message. Once fixed, the conversion resumes automatically.
No. The converter runs entirely in your browser. Your data never touches a server.
Convert standard integers into Roman numerals, or decode Roman numerals back into decimal numbers in batch mode.
Convert UTF-8 text into Binary, Hexadecimal, and Octal formats, or decode data structures back into readable strings.
Convert JPEG, PNG, and WebP images to Base64 strings. Format the output as raw Base64, data URLs, CSS variables, HTML tags, or Markdown links.
Convert JSON, YAML, XML, TOML, CSV, and TSV into each other. Every input parses to a shared JSON value first, so any format can become any other format.
Convert Unix epoch timestamps to human-readable dates or parse dates into epoch seconds and milliseconds instantly.
Convert ISO 8601 strings into formatted, human-readable local dates and times. Process inputs individually or in batches.
Convert Markdown into rendered HTML and view the plain HTML source code instantly.
Generate and validate secure BIP39 cryptographic seed phrases. Calculate seed hexes with custom passphrases entirely offline in your browser.
Turn raw CSV or JSON data into beautiful, downloadable charts in seconds. Supports Bar, Line, Pie, and Radar charts.
Validate and format raw JSON data. Identify syntax errors, minify payloads, or beautify strings with proper indentation.
Convert large or small numbers into scientific notation (e.g. 1.2e+5) or expand them back to standard decimal forms.
Convert times across multiple global time zones simultaneously. Compare UTC offsets and local hours in a clear grid.