# Coffe2Code

> Free online developer tools: JSON formatter, Base64 and URL encoder, JWT decoder, UUID and hash generator, Unix timestamp converter, regex tester and cron explainer.

Small, fast developer tools that run entirely in your browser. Format JSON, decode a JWT, test a regex or read a cron expression without pasting your data into someone else’s server.

All tools are free, need no account, and run entirely in the browser; nothing a visitor enters is uploaded. Each tool page states the formula or standard it uses, with worked examples.

Built by Sumair Roudani (https://sumairroudani.com). Published by Avancera Solution. Contact: hello@coffe2code.com.

## Encode & decode

- [Base64 Encode & Decode](https://coffe2code.com/base64-encode-decode/): Encode text to Base64 or decode it back, with full UTF-8 and URL-safe support.
- [URL Encode & Decode](https://coffe2code.com/url-encode-decode/): Percent-encode text for URLs and query strings, or decode it back.
- [JWT Decoder](https://coffe2code.com/jwt-decoder/): Read the header and payload of a JSON Web Token and check when it expires.

## Format & convert

- [JSON Formatter & Validator](https://coffe2code.com/json-formatter/): Pretty-print, minify and validate JSON, with the exact line of any error.
- [Case Converter](https://coffe2code.com/case-converter/): Convert text to camelCase, snake_case, kebab-case, PascalCase and more.
- [Unix Timestamp Converter](https://coffe2code.com/unix-timestamp-converter/): Convert epoch seconds or milliseconds to a date, and dates back to epoch.

## Generate

- [UUID Generator](https://coffe2code.com/uuid-generator/): Generate random v4 and time-ordered v7 UUIDs, one or a thousand at a time.
- [SHA Hash Generator](https://coffe2code.com/hash-generator/): SHA-256, SHA-384, SHA-512 and SHA-1 hashes of any text, plus HMAC.

## Test & debug

- [Regex Tester](https://coffe2code.com/regex-tester/): Test a JavaScript regular expression live, with matches and groups highlighted.
- [Cron Expression Explainer](https://coffe2code.com/cron-expression-explainer/): Turn a cron schedule into plain English and see the next run times.

## Guides

- [JWT Explained: Header, Payload and Signature](https://coffe2code.com/guides/jwt-explained/): What is inside a JSON Web Token, and what decoding does and does not prove.
- [Cron Syntax Explained, With Examples](https://coffe2code.com/guides/cron-syntax/): The five fields, special characters and the schedules people get wrong.
- [Regex Cheat Sheet for JavaScript](https://coffe2code.com/guides/regex-cheat-sheet/): Character classes, quantifiers, groups, lookarounds and flags on one page.
- [Unix Time Explained](https://coffe2code.com/guides/unix-time-explained/): Epoch seconds vs milliseconds, time zones, leap seconds and the 2038 problem.

## Optional

- [About](https://coffe2code.com/about/): who builds the site and how the tools are checked
- [Sitemap](https://coffe2code.com/sitemap-index.xml)