Developer Tools
Free All-In-One Programmatic Toolsets
Format codes, decode payloads, generate mock values, and test regexes. Access secure, offline-ready Utilities running directly inside your browser. No limits, no data leakage.
Available Developer Tools (31)
JSON Validator
Check for syntax errors, missing brackets, or bad formatting in your JSON data.
JSON Viewer
Interactive tree-view representation to traverse massive JSON arrays/objects.
XML Formatter
Prettify and index raw XML files with indent structures.
SQL Formatter
Format SQL queries (SELECT, JOINs, WHEREs) for improved legibility.
Base64 Encode Decode
Encode strings to Base64 values or decode them back to text representations.
JWT Decoder
Decode JSON Web Tokens instantly to inspect header, payload, and signatures.
URL Encoder Decoder
Process URL components, encoding query values or decoding escape characters.
Regex Tester
Validate regular expressions dynamically against match text with capture group displays.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from input strings.
UUID Generator
Generate multiple version 4 UUID strings instantly.
API Tester
Client-side REST API requester (GET, POST, custom headers) for checking API nodes.
Cron Generator
Translate crontab schedules to English and generate expression setups.
Color Picker
Pick colors, convert formats (HEX, RGB, HSL) and check contrast scores.
CSS Minifier
Compress stylesheet documents by removing unnecessary whitespace and comments.
JS Minifier
Minify Javascript files to minimize script sizes.
HTML Minifier
Reduce HTML payload weight by scrubbing extra linebreaks and quotes.
HTML Entity Encoder/Decoder
Encode special characters to HTML entities or decode them back to plain text.
String to Hex Converter
Convert character strings into hex numbers or decode hex strings back into text.
JSON Minifier
Compress and minify JSON files into single-line formats by stripping whitespaces.
XML to JSON Converter
Translate nested XML tree data structures into parsed JSON objects.
Base32 Encoder/Decoder
Encode text strings into Base32 format or decode Base32 back to readable text.
SVG Minifier
Compress and optimize SVG graphics by removing metadata, comments, and redundant namespaces.
SQL Minifier
Compress and format raw SQL queries into a single line by stripping comments and spaces.
User Agent Parser
Parse browser user agent strings to extract OS, engine, browser details, and device category.
JSON Schema Generator
Generate standard JSON Schema templates dynamically from input JSON payloads.
XML Minifier
Optimize XML documents by stripping empty indentation, comments, and spacing.
JWT Generator
Generate custom signed JSON Web Tokens (JWT) client-side using Web Crypto API.
JWT Validator
Validate and verify JWT token signatures and expiration claims client-side.
YAML Formatter
Pretty-print, format, and validate YAML documents client-side.
YAML Validator
Validate YAML syntax and identify structural issues and line-level parsing errors.
JSON Diff
Compare two JSON objects side-by-side and highlight structural line-level differences.
FAQs
Q: Is pasting JSON codes here secure?
Yes. Our JSON tools do not send network payloads. The formatting, validation, and tree-node parsing run entirely in client-side script contexts.
Q: What library parses the JWT decryptions?
We decode JWT payloads locally using built-in Base64 URL decoding, ensuring no credentials leak.
Q: Can the XML formatter handle invalid tags?
The formatter attempts to repair basic open/close tag nesting errors client-side and points out severe syntax errors.
Q: Do the HTML/CSS minifiers compress code effectively?
Yes, they strip comments, remove layout spacing, and compress variable blocks locally using highly optimized regular expression parsers.