Developer Tools
Everyday utilities for developers: formatters, converters, encoders and generators. Tokens, payloads and config files stay on your machine because nothing is sent to a server.
- JSON Formatter Pretty-print messy JSON, find syntax errors fast, or minify it for production.
- JSON to CSV Turn an array of JSON objects into a CSV you can open in Excel or Google Sheets.
- CSV to JSON Convert CSV or a range copied from Excel into a JSON array.
- JSON to YAML Convert JSON to clean, readable YAML for Kubernetes manifests, Docker Compose, GitHub Actions and config files.
- YAML to JSON Convert YAML config files to JSON, with syntax errors reported with line numbers.
- JSON to XML Convert JSON objects to well-formed XML.
- XML to JSON Convert XML documents, feeds and SOAP responses to JSON.
- TOML to JSON Convert TOML files such as Cargo.toml, pyproject.toml and Hugo configs to JSON.
- JSON to TOML Convert a JSON object to TOML for Rust, Python and static-site generator configs.
- Base64 Encode / Decode Convert text to and from Base64, the encoding used in data URIs, emails, JWTs and basic authentication headers.
- URL Encode / Decode Make text safe for URLs and query strings, or read encoded URLs from logs and analytics.
- HTML Entity Encoder Safely show code and special characters on a web page, or turn &-style entities back into readable text.
- SQL Formatter Make long, single-line SQL queries readable for code reviews, documentation and debugging.
- HTML to Markdown Turn HTML from a web page, CMS or email into Markdown you can use in READMEs, wikis and static site generators.
- Code Beautifier Make minified or badly indented code readable again.
- HTML / CSS / JS Minifier Shrink CSS, JavaScript and HTML by removing comments, whitespace and unnecessary characters.
- .env Formatter Check environment files for mistakes and convert them for Docker, Kubernetes or documentation.
- cURL Converter Paste a cURL command copied from browser DevTools or API docs and get ready-to-use code.
- JWT Decoder Inspect JSON Web Tokens from your app or API.
- Hash Generator Calculate cryptographic hashes of text or any file and compare them with a published checksum.
- UUID Generator Create unique identifiers for databases, APIs and test data.
- Regex Tester Build and debug regular expressions against sample text, with every match and capture group listed.
- Cron Expression Explainer Understand what a crontab schedule means and when it will next run.
- Markdown Previewer A simple Markdown editor for READMEs, notes and documentation, with an instant preview.
- Unix Timestamp Converter Convert epoch time from logs, databases and APIs into human-readable dates, and the other way round.
- Color Converter Translate a colour between web, design and print formats, and get lighter and darker variations.
- CSS Gradient Generator Design gradient backgrounds visually and copy the CSS.
- Box Shadow Generator Build soft, realistic shadows by layering several box-shadows, as modern UI kits do.
- Glassmorphism Generator Create the frosted-glass card effect used in modern app and website designs.
- Flexbox Playground Understand flexbox by changing properties and watching the items move.
- CSS Grid Generator Create grid layouts visually, including responsive card grids that need no media queries.
- JSONPath Tester Write and debug JSONPath queries used in API tests, Postman, Kubernetes and data pipelines.
- User Agent Parser Find out which browser, OS and device a user agent string belongs to, for debugging and analytics.
- HTTP Status Codes Look up what an HTTP status code means and what usually causes it.
- Chmod Calculator Work out the right chmod value for files and folders on Linux servers.
- Code Diff Checker See exactly what changed between two versions of a file, like a code review.
- JSON Diff Find the real differences between two API responses or config files, regardless of key order or whitespace.
- Mock Data Generator Create sample data for testing apps, demos and databases, with names and places that look right for Indian users.