Developer Tools
Developer utilities for JSON, Base64, URLs, hashes, UUIDs, timestamps, code formatting and debugging.
JSON Formatter & Validator
Format, minify and validate JSON, locate syntax errors, copy or download the result, with input processed locally in the browser.
★JSON Minifier
Minify JSON by removing unnecessary spaces and line breaks for compact transfer or testing.
XML Formatter
Format and indent XML to make nested elements, tag hierarchy and structure easier to inspect.
SQL Formatter
Reformat and indent SQL queries so SELECT, JOIN, WHERE and other clauses are easier to read and review.
Regex Tester
Test a regular expression against sample text and inspect matches for pattern, group and rule debugging.
URL Encoder / Decoder
Percent-encode or decode URLs and query values, including spaces, non-ASCII text and special characters.
Base64 Encoder / Decoder
Encode and decode Base64 text locally, inspect output size, copy or download results, and remember that Base64 is not encryption.
HTML Entity Encoder
Encode text as HTML entities or decode entities back to characters, including angle brackets, ampersands and quotes.
JWT Decoder
Decode a JWT header and payload in the browser for inspection; decoding does not verify the token signature.
UUID Generator
Generate UUIDs in bulk with browser randomness for development, test data, temporary identifiers and sample records.
Hash Generator
Generate common hash digests from text for integrity checks, development testing and change comparison.
Unix Timestamp Converter
Auto-detect Unix seconds or milliseconds and convert among local time, UTC, ISO 8601 and multiple IANA zones with relative time.
Color Converter
Convert colors between HEX, RGB, HSL and other common formats and copy values for development or design.
CSS Gradient Generator
Build CSS gradient code from colors and direction with a live preview for web backgrounds and UI design.
Meta Tag Generator
Generate common HTML meta tags from page title, description and related fields for use in a document head.
JSON to CSV
Convert structured JSON arrays into CSV table text for spreadsheets and lightweight data exchange.
CSV to JSON
Parse CSV tables into JSON data for API tests, data cleanup and front-end development.
Number Base Converter
Convert integers between binary, octal, decimal, hexadecimal and other supported number bases.
CSS Minifier
Minify CSS by removing unnecessary whitespace and comments to reduce stylesheet size before deployment.
JavaScript Minifier
Minify JavaScript by removing unnecessary whitespace and comments for testing and simple static-script optimization.
Cron Expression Helper
Read and build cron expressions by working with minute, hour, day, month and weekday schedule fields.
HTTP Status Reference
Look up common HTTP status codes and categories to understand 2xx, 3xx, 4xx and 5xx responses.
Query String Parser
Parse URL query strings into key-value parameters for inspection, debugging and copying.
UTM Campaign URL Builder
Build campaign URLs with UTM source, medium, campaign, term and content parameters, then preview and copy the final link.
Open Graph Social Preview
Preview how a page may appear when shared and generate Open Graph and Twitter Card meta tags.
About these tools
Developer utilities for JSON, Base64, URLs, hashes, UUIDs, timestamps, code formatting and debugging.