Developer

Free online developer tools for formatting, encoding, hashing, debugging and converters. Fast utilities in your browser, no sign-up.

JSON Formatter

Format and validate JSON.

Base64 Decoder

Decode Base64 back to text.

Base64 Encoder

Encode text to Base64.

JSON Minifier

Minify JSON by removing whitespace.

XML Formatter

Format and pretty-print XML.

JWT Decoder

Decode JWT header and payload (no verification).

CSV to JSON

Convert CSV into JSON array.

JSON to CSV

Convert a flat JSON array into CSV.

XML to JSON

Convert XML into JSON (basic).

HTML Formatter

Format HTML code (best-effort).

Regex Tester

Test regex matches against input text.

XML Minifier

Minify XML by removing whitespace.

HTML Minifier

Minify HTML by removing comments and extra whitespace (basic).

CSS Minifier

Minify CSS by removing comments and whitespace (basic).

JS Minifier

Minify JavaScript (whitespace/comments basic).

SQL Formatter

Format SQL keywords and indentation (simple).

Diff Checker

Compare two texts and highlight differences (basic).

Query String Parser

Parse query string into key-value pairs.

URL Parser

Parse URL into protocol, host, path, query, fragment.

Markdown Preview

Render Markdown to HTML (basic).

Query String Builder

Build query strings from key-value pairs.

Integer to IP

Convert integer to IPv4 address.

IP to Integer

Convert IPv4 address to integer.