Developer tools
Everyday dev chores.
Nothing leaves your machine.
- Base64 Encode / DecodeEncode and decode Base64 text and files.
- URL Encode / DecodePercent-encode and decode URLs.
- JWT DecoderRead a JWT's header, payload and expiry.
- UUID GeneratorRandom v4 and time-ordered v7 UUIDs.
- Hash GeneratorMD5, SHA-256, SHA-512 and more — text or files.
- Regex TesterLive matches, groups and replace.
- Timestamp ConverterEpoch ↔ date, in your time zone and UTC.
- Color ConverterHEX ↔ RGB ↔ HSL with contrast check.
- JSON FormatterBeautify, minify and validate JSON.
orrgo developer tools format JSON, encode and decode Base64 and URLs, decode JWTs, generate UUIDs and hashes, test regular expressions and convert timestamps and colors — entirely in your browser, so tokens and data are never sent anywhere.
Which developer tool do I need?
| I want to… | Use |
|---|---|
| Pretty-print or validate JSON | JSON Formatter |
| Encode or decode Base64 | Base64 Encode / Decode |
| Encode a URL or read its parameters | URL Encode / Decode |
| See what's inside a JWT | JWT Decoder |
| Generate unique IDs | UUID Generator |
| Checksum text or a file | Hash Generator |
| Test a regular expression | Regex Tester |
| Convert epoch time | Timestamp Converter |
| Convert HEX, RGB and HSL | Color Converter |
Why it matters that this runs locally
Many online developer tools send what you paste to a server — risky when it contains API keys, session tokens, customer data or proprietary code. This tool runs entirely in your browser: open your browser's Network tab and you will see that nothing you type is sent anywhere.
Frequently asked questions
- Is it safe to paste secrets?
- Every developer tool runs locally in your browser and makes no network requests with your input. Even so, rotate any credential that may have been exposed.
- Is it free? Do I need an account?
- Yes, it is completely free with no sign-up, no watermarks and no daily limits.