Decode & Encode

Transform text between encoding formats instantly in your browser.

B64

Base64

Encode or decode Base64 strings. Commonly used for binary data in JSON, APIs, and email.

Input

Output

URL

URL Encoding

Percent-encode or decode URL components. Essential for safely passing values in query strings.

Input

Output

HTML

HTML Entities

Encode special characters to HTML entities (&, <, >) or decode them back.

Input

Output

HEX

Hex Encoding

Convert text to hexadecimal byte representation or decode hex back to text.

Input

Output

BIN

Binary

Convert text to binary (8-bit groups) or decode binary back to text.

Input

Output

R13

ROT13

Apply ROT13 substitution cipher. Encoding and decoding are the same operation.

Input

Output

Hash Generator

Generate cryptographic hashes from any text. All hashing runs locally in your browser.

Generate All Hashes

Type or paste text below to instantly compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes.

Input

MD5

SHA-1

SHA-256

SHA-384

SHA-512

JWT Decoder

Paste a JSON Web Token to inspect its header, payload, and signature. Nothing leaves your browser.

JWT

Decode Token

Enter a JWT (three Base64URL parts separated by dots) to see the decoded contents.

JWT Token

JSON Formatter

Pretty-print, minify, and validate JSON. All processing stays in your browser.

{}

Format & Validate

Paste raw or minified JSON to pretty-print it, compact it to one line, or check if it is valid.

Input

Output

Regex Tester

Test regular expressions live against any string. Matches are highlighted inline.

Regular Expression

Enter a pattern and test string. Matches highlight in real time. Supports flags g, i, m, and s.

Pattern

/ / g

g global i ignore case m multiline s dotAll

Test String

Highlighted Matches

Utilities

Common developer utilities that run entirely in your browser.

UID

UUID Generator

Generate random version 4 UUIDs using the browser's built-in cryptographic random number generator.

Count: Length:

Output

Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. Automatically detects seconds vs. milliseconds.

Epoch → Date

UTC

Local

Relative

ISO 8601

Seconds

Milliseconds

Date → Epoch

Seconds

Milliseconds

Case Converter

Convert between camelCase, PascalCase, snake_case, kebab-case, and more. Accepts any format as input.

Input

camelCase

PascalCase

snake_case

kebab-case

UPPER_SNAKE

Title Case

UPPER CASE

lower case