Dev Tools
Free online developer utilities. Formatters, validators, encoders and more — fast, free, and instant.
Base64 Decoder
Decode Base64 strings to plain text online. Instantly reverse Base64 encoding to retrieve the original text or binary content.
Open tool →Base64 Encoder
Encode text or binary data to Base64 online. Instantly convert plain text to Base64 format for use in APIs, data URIs, and email attachments.
Open tool →Case Converter
Convert text between cases online. Transform text to UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, and more.
Open tool →Color Converter (HEX, RGB, HSL)
Convert colors between HEX, RGB, and HSL formats online. Instantly transform color codes with a live preview swatch and copy each format.
Open tool →CSV to JSON Converter
Convert CSV data to JSON online. Transform spreadsheet-style comma-separated data into a JSON array of objects with headers as keys.
Open tool →Hash Generator (SHA-256, SHA-512, MD5)
Generate cryptographic hashes online. Compute MD5, SHA-1, SHA-256, and SHA-512 hashes from any text string directly in your browser.
Open tool →HTML Decoder
Decode HTML entities to plain text online. Convert &, <, >, ", and other HTML entities back to their original characters.
Open tool →HTML Encoder
Encode HTML special characters to HTML entities online. Safely escape &, <, >, ", and ' to prevent XSS and render HTML as literal text.
Open tool →JSON Formatter & Validator
Format, validate, and beautify JSON online. Instantly detect syntax errors and pretty-print JSON data.
Open tool →JSON to CSV Converter
Convert JSON arrays to CSV format online. Transform a JSON array of objects into comma-separated values with headers for use in spreadsheets.
Open tool →JSON Validator
Validate JSON online instantly. Check JSON syntax, identify errors with location info, and view root type, key count, and nesting depth.
Open tool →Password Generator
Generate strong, random passwords online. Customize length (8–128), character sets, and see real-time password strength. Runs entirely in your browser.
Open tool →Random String Generator
Generate random strings online with custom length, character sets, and quantity. Create tokens, passwords, IDs, and test data instantly in your browser.
Open tool →Regex Tester
Test regular expressions online with real-time match highlighting. Debug regex patterns against test strings with flag support and match details.
Open tool →Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Display UTC, local time, ISO 8601, RFC 2822, and relative time formats instantly.
Open tool →URL Decoder
URL-decode percent-encoded strings online. Convert %XX sequences back to readable characters for debugging URLs and API requests.
Open tool →URL Encoder
URL-encode strings and query parameters online. Convert special characters to percent-encoded format for safe use in URLs and HTTP requests.
Open tool →UUID Generator
Generate UUID v4 values online. Create up to 100 cryptographically random universally unique identifiers instantly in your browser.
Open tool →XML Formatter
Format and minify XML online. Pretty-print XML with proper indentation or collapse it to a single line for compact transmission.
Open tool →YAML to JSON Converter
Convert YAML to JSON online. Transform YAML configuration files and data structures into JSON format without any server-side processing.
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