💻 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 UtilitiesBase64 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 UtilitiesCron 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 UtilitiesCSV 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 UtilitiesIP 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 UtilitiesJavaScript Formatter
JavaScript Formatter is a free online developer tool for developers debugging payloads, configs and code. Paste JavaScript and get clean…
Developer UtilitiesJavaScript Beautifier
Beautify and format minified JavaScript into readable code. A free online developer tool with no signup, no uploads and nothing to install.
Developer UtilitiesJSON 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 UtilitiesJSON 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 UtilitiesJSON 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 UtilitiesJWT 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 UtilitiesRegex Tester
Test regular expressions against any text with real-time match highlighting. Free, no signup, and everything runs locally in your browser.
Developer UtilitiesRGB 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 UtilitiesSQL 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 UtilitiesSSL 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 UtilitiesURL 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 UtilitiesURL 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 UtilitiesUUID 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 UtilitiesWeb 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 UtilitiesXML 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 UtilitiesYAML 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