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💻 Developer Utilities

Format, validate and decode the things you paste into a terminal all day: JSON, YAML, XML, SQL, JWTs, Base64, URLs, cron expressions and SSL certificates. Nothing is sent to a server, so production payloads stay on your machine.

Base64 Decoder

Decode Base64 back into readable text, including URL-safe input and missing padding. Free, no signup, and everything runs locally in your browser.

Developer Utilities

Base64 Encoder / Decoder

Base64 Encoder / Decoder is a free online developer tool. Encode and decode text to/from Base64 instantly. No signup, nothing uploaded, works on…

Developer Utilities

Cron Expression Generator

Build cron expressions visually. Preview next 5 fire times. A free online developer tool with no signup, no uploads and nothing to install.

Developer Utilities

CSV to JSON Converter

CSV to JSON Converter is a free online developer tool for developers debugging payloads, configs and code. Convert CSV to JSON in your browser.…

Developer Utilities

IP Address Lookup

IP Address Lookup is a free online developer tool for developers debugging payloads, configs and code. Analyse any IPv4 or IPv6 address in your…

Developer Utilities

JavaScript Formatter

JavaScript Formatter is a free online developer tool for developers debugging payloads, configs and code. Paste JavaScript and get clean…

Developer Utilities

JavaScript Beautifier

Beautify and format minified JavaScript into readable code. A free online developer tool with no signup, no uploads and nothing to install.

Developer Utilities

JSON Formatter

Format, validate, and minify JSON. Beautify messy JSON in one click. A free online developer tool with no signup, no uploads and nothing to install.

Developer Utilities

JSON Syntax Validator

Validate JSON syntax with exact line, column and path, catch duplicate keys and format or minify — in your browser. Free, no signup, runs in your…

Developer Utilities

JSON to CSV Converter

JSON to CSV Converter is a free online developer tool for developers debugging payloads, configs and code. Convert JSON to CSV in your browser.…

Developer Utilities

JWT Decoder

Decode JSON Web Tokens (JWT) without a server — inspect header and payload. A free online developer tool with no signup, no uploads and nothing to…

Developer Utilities

Regex Tester

Test regular expressions against any text with real-time match highlighting. Free, no signup, and everything runs locally in your browser.

Developer Utilities

RGB to HEX Converter

Convert RGB and HSL values to HEX and back, with sliders and a live colour preview. Free, no signup, and everything runs locally in your browser.

Developer Utilities

SQL Formatter

SQL Formatter is a free online developer tool for developers debugging payloads, configs and code. Format or minify SQL in your browser: one clause…

Developer Utilities

SSL Certificate Checker

SSL Certificate Checker is a free online developer tool for developers debugging payloads, configs and code. Paste a PEM certificate to decode…

Developer Utilities

URL Decoder

Encode or decode URLs and split them into host, path and query parameters. A free online developer tool with no signup, no uploads and nothing to…

Developer Utilities

URL Encoder / Decoder

URL Encoder / Decoder is a free online developer tool for developers debugging payloads, configs and code. Percent-encode text for links, query…

Developer Utilities

UUID Generator

Generate UUID v4, v7 identifiers. Bulk generate up to 100 at once. A free online developer tool with no signup, no uploads and nothing to install.

Developer Utilities

Web Developer Tool

A developer toolbox on one page: JSON formatter, HTML entities, timestamp converter and hash helper. Free, no signup, runs in your browser.

Developer Utilities

XML to JSON Converter

XML to JSON Converter is a free online developer tool for developers debugging payloads, configs and code. Convert XML to JSON for free in your…

Developer Utilities

YAML to JSON Converter

Convert YAML to JSON and vice versa. Paste and convert instantly. A free online developer tool with no signup, no uploads and nothing to install.

Developer Utilities