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Inspect header, payload & verify HMAC signatures

MD5, SHA-1, SHA-256, SHA-384 & SHA-512 + HMAC

Strong, configurable random secrets

Cryptographically random v4 UUIDs and GUIDs in bulk

ROT13 and ROT47 cipher encode/decode

AES symmetric encryption in the browser

Simple XOR bitwise encryption

Hash and verify bcrypt passwords

Build and sign HS256/384/512 tokens

Entropy score and offline crack-time estimate

Encode & decode text or files, URL-safe variant

Percent-encoding for query strings & URIs

Escape & unescape HTML special characters

Base32 encode and decode text strings

Encode / decode internationalized domain names

Convert text to Morse code and back

Escape special characters in JSON strings

Bitcoin & IPFS Base58 encode/decode

Image to data URI and back, no upload

Beautify, minify & validate JSON

Pretty-print & lint XML documents

Readable, dialect-aware SQL formatting

Prettify & minify HTML markup

Beautify & minify CSS stylesheets

Prettify & minify JavaScript code

Round-trip tabular data cleanly

Convert config between YAML and JSON

Convert between JSON and XML formats

Convert between comma and tab delimited

Live GitHub-flavored Markdown rendering

Strip HTML and convert to clean Markdown

Convert between seconds and H:M:S format

Convert Celsius, Fahrenheit & Kelvin

Length, weight, volume & more

Generate typed interfaces from a JSON sample

HEX ↔ RGB ↔ HSL ↔ OKLCH ↔ CMYK

Pick, save and copy color codes visually

CSS gradient builder with live preview

Convert between binary, octal, hex & decimal

AND, OR, XOR, NOT & bit shifts on numbers

Convert between Roman and decimal numbers

Convert IPs between decimal, hex, binary & octal

Placeholder text by the paragraph or word

Random alphanumeric strings of any format

Random integers or decimals in any range

Generate random IP and MAC addresses

Generate random calendar dates and times

List and check prime numbers

Generate Fibonacci sequence up to N terms

Generate downloadable QR codes from any text

camelCase, snake_case, SCREAMING_SNAKE, kebab & more

Side-by-side line & word diff viewer

Count words, chars, lines & paragraphs

Test regular expressions with live match highlighting

Find, replace and regex-substitute across text

Sort, reverse or shuffle lines of text

Remove duplicate or empty lines from text

Prepend or append text to every line

Reverse characters, words or line order

Count how often each word appears

Turn any title into a clean URL slug

Epoch ↔ human date, any timezone, live ticker

Explain & preview next N cron schedule runs

Resolve A, AAAA, MX, TXT & CNAME via DoH

Validate mail authentication policy via DNS

Break a URL into protocol, host, path, query & hash

Every status code, searchable, with when to use it

Look up the Content-Type for any file extension

Dec, hex, octal & binary for all 128 characters