Featured Developer Tools

This catalog highlights the tools with the clearest search intent, strongest documentation, and most direct developer value. The tools are intentionally presented as one developer-tool catalog, then grouped into four practical workflows:

• Reshape data between formats — JSON ↔ CSV ↔ YAML ↔ XML, or any of them to another practical format. Start with the JSON Tools or CSV/JSON Workflow hub for the format you have now; converters are grouped by source.
• Generate or hash something — passwords, hashes, HMAC signatures, bcrypt strings, or JWT payload checks. Use the Security Workflow for cryptographic inspection and credential generation.
• Check Ethereum values — checksum an Ethereum address or convert Wei, Gwei, Ether, BTC, and Satoshi amounts before using them in docs, tests, or QA. The Web3 Workflow hub is intentionally narrow so the workflow stays easy to verify.
• Encode or escape text for a protocol — Base64, URL percent-encoding, HTML entities. The Encoding Workflow hub is deliberately narrow so you do not end up on a page that reaches into crypto by mistake.

Every highlighted tool runs entirely in your browser — input data never leaves your device. You should still follow your organization's security policy and avoid sending passwords, API keys, private keys, JWTs, or confidential production data by email or support messages. If you cannot find what you need, the search box above matches title, description, and tags — try the format name (e.g. yaml, qr, ethereum, hmac) first.