Code

Decode Base64 back to readable text, in the standard or the URL-safe alphabet, entirely in your browser.

Encode text to Base64, in the standard or URL-safe alphabet, entirely in your browser.

Indent a stylesheet so you can read it, entirely in your browser. Nothing is renamed, shortened or normalised.

Turn a CSV table into a JSON array of objects, entirely in your browser.

Rewrite text as camelCase, snake_case, kebab-case, Title Case and six more, in your browser.

Count characters, words, lines, paragraphs and bytes as you type, and see how often each character occurs — entirely in your browser.

Tick read, write and execute for owner, group and others: the octal mode, the rwx letters and the chmod command, both ways round.

Convert a colour between HEX, RGB, HSL and HSV, with its contrast against black and white.

Describe a schedule and get the cron expression that runs it, with its next run times in the time zone you choose.

Read a cron expression field by field and see the next times it will run.

Compare two texts line by line and see exactly what was added, removed or left alone.

Turn é and é back into readable text: named and numeric references, decimal or hexadecimal, in your browser.

Escape text into HTML entities so markup characters survive, in your browser.

Indent an HTML document without changing how it renders, entirely in your browser.

MD5, SHA-1, SHA-256, SHA-512 and CRC-32 of any text, computed in your browser.

From an address and a prefix or mask: network, broadcast, host range, number of hosts, and whether the address is private.

Indent and beautify a JSON document with two spaces, four or tabs, keys sorted if you wish, entirely in your browser.

Remove every unnecessary space and line break from a JSON document, entirely in your browser.

Check that a document is valid JSON and see exactly where the syntax breaks, entirely in your browser.

Turn a JSON array of objects into a CSV table, entirely in your browser.

Read the header, claims and expiry of a JSON Web Token in your browser. Decoding only — no signature is verified.

Indent a script so you can read it, entirely in your browser. No line break you wrote is ever removed.

See your Markdown rendered as you type, in your browser, with every piece of raw HTML escaped rather than run.

See the IP address this server sees, and what the address itself says.

Convert a whole number between binary, octal, decimal, hexadecimal and any base up to 36.

A random password made in your browser and never sent anywhere, with its entropy stated in bits rather than guessed at.

Turn a URL, a wifi password or any text into a QR code, entirely in your browser.

Test a JavaScript regular expression against your text and see every match and capture group, in your browser.

Indent an SQL query so you can read it, entirely in your browser. Nothing is executed and no database is contacted.

Turn a title into a clean URL slug, accents and punctuation handled, in your browser.

Turn a percent-encoded URL or query value back into readable text, entirely in your browser.

Percent-encode text so it can travel safely in a URL, entirely in your browser.

Generate version 4 or version 7 UUIDs in your browser, one at a time or a hundred at once.

Convert a Unix timestamp in seconds or milliseconds to a date in any time zone, and back.

Indent or minify an XML document without changing what it says, entirely in your browser.

Check an XML document against an XSD and see which element breaks which rule.