Developer Tools
Our developer tools address common coding and data tasks that programmers, IT professionals, and technical users face every day. Each tool is designed to be fast, accurate, and privacy-respecting — all processing happens locally in your browser.
JSON Formatter & Validator
Working with JSON is at the heart of modern web development. Our JSON Formatter takes raw, minified, or poorly formatted JSON and beautifies it with proper indentation and syntax highlighting. It also validates your JSON structure and highlights errors with line numbers, saving you debugging time. Use it for: - Formatting API responses for readability - Validating configuration files (package.json, tsconfig, etc.) - Debugging webhook payloads and REST API calls - Preparing JSON data for documentation or code reviews
Base64 Encoder / Decoder
Base64 encoding is essential for data transmission in web applications. Our tool lets you encode plain text to Base64 and decode Base64 strings back to readable text instantly. Common use cases include: - Encoding binary data for inclusion in JSON or XML - Decoding authentication tokens and API keys during debugging - Converting images and files to Base64 for embedding in HTML or CSS - Working with data URIs and web storage formats
Secure Password Generator
Strong passwords are your first line of defense against unauthorized access. Our Password Generator creates cryptographically secure passwords with customizable options: - Adjustable length from 4 to 100+ characters - Toggle uppercase letters, lowercase letters, numbers, and special characters - Exclude ambiguous characters (e.g., 0 vs O, l vs 1) for readability - Real-time entropy indicator showing password strength
Why Choose Our Developer Tools
- No server round-trips: your code and data never leave your machine - Works offline: tools function even without an internet connection once loaded - No tracking: we do not log or inspect what you process - Keyboard-friendly: tab between fields, copy results instantly - Regular updates based on developer community feedback
Related Utilities
- JSON Formatter & Validator — Free JSON Beautifier
Format, validate, and beautify JSON data instantly with syntax highlighting and error detection. 100% browser-based and completely free.
- Base64 Encoder & Decoder — Online Converter
Encode or decode Base64 strings instantly in your browser. 100% client-side processing, no uploads, and completely free.
- Password Generator — Strong Random Passwords
Generate secure random passwords with customizable length and character options. Free, private, and always 100% browser-based.
- URL Encoder & Decoder — Free Percent-Encoding Tool
Encode and decode URLs and query strings instantly with encodeURIComponent or encodeURI. Detects malformed percent-encoding. Free and private.
- UUID Generator — Generate Random UUID v4 Online
Generate random UUID v4 values instantly, one or many at a time, with an optional uppercase format. Free, private, and fully browser-based.
- JSON to CSV Converter — Free Online JSON Converter
Convert a JSON array of objects into CSV in your browser. Auto-detect every column, escape values per RFC 4180, then copy or download the result.
- Hash Generator — MD5, SHA-1, SHA-256 & SHA-512
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text instantly with copy buttons. Free, private and 100% online in your browser.
- Random String Generator — Secure Alphanumeric
Generate random strings with custom length and character sets — alphanumeric, hex, lowercase or custom. Cryptographically secure and free.
- Unix Timestamp Converter — Epoch to Date & Back
Convert Unix timestamps (seconds or milliseconds) to human dates in local time and UTC, and turn any date back into epoch seconds and milliseconds. Free.
- CSV to JSON Converter — Free Online Tool
Convert CSV to JSON in your browser. Auto-detect the delimiter, handle quoted fields and newlines per RFC 4180, then copy or download the JSON array.
- JWT Decoder — Read Header & Payload Online
Decode any JSON Web Token in your browser: read the header, payload and claims, and see exp, iat and nbf as human dates. Private, no upload, no signature check.
- HTML Encoder & Decoder — Free Online Tool
Encode text to HTML entities and decode entities back to text in your browser. Escape &, <, >, quotes and apostrophes, or convert non-ASCII characters.