DevToolsHub

Encode & Security Developer Tools Online

Encode data for APIs, inspect tokens and certificates, and generate secrets—all without uploading sensitive blobs to our servers when the tool runs locally.

Encoding tools are not encryption. Base64 and URL encoding make data safe for transport in JSON or query strings—they do not protect confidentiality. Use TLS and proper secret management for anything sensitive.

JWT decoders and PEM parsers are for debugging and inspection. Always verify JWT signatures on your server with the issuer’s keys. Never paste private keys or production refresh tokens into any website.

Password generators create random strings suitable for service accounts when paired with a password manager. Rotate credentials on a schedule documented in your security runbooks.

All encode & security tools

  • Base64 Encode / Decode

    Encode text or files to Base64, decode to text or download as file.

  • URL Encode / Decode

    Percent-encode text for URLs or decode URL-encoded strings. Shareable URL.

  • Hash Generator

    Generate MD5, SHA-1, and SHA-256 hashes from text. Copy or share via URL.

  • JWT Decoder

    Decode JWT header and payload to JSON. View exp, iat. Shareable URL.

  • PEM / Certificate Decoder

    Decode SSL and X.509 PEM certificates. Subject, issuer, validity, SAN, and more.

  • Password Generator

    Strong random passwords. Length 8–64, character sets, shareable URL.

  • UUID Generator

    Generate UUID v4 online. Copy one or many, share URL with count.

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