Edge Notes combines an automated metadata digest of respected software engineering publications with self-contained networking and data tools that execute entirely inside your browser.
Compute network prefixes, broadcast addresses, wildcard masks, usable host ranges, and RFC 5952 canonical IPv6 representations with accurate /31, /32, /127, and /128 boundary handling.
Validate, pretty-print, minify, and alphabetically sort JSON keys. Pinpoints exact line and column positions on syntax errors and reports structural depth without executing untrusted code.
Convert strings using standard Base64, URL-safe Base64URL, encodeURIComponent, and full URI encoding with multi-byte UTF-8 safety via TextEncoder and fatal decoding checks.
Generate hexadecimal and Base64 SHA-256 digests for text or local files (up to 50 MB) using the browser Web Crypto API, and compare computed digests against release SHA256SUMS lines.
A practical reference on bitwise subnet masks, route aggregation, RFC 3021 /31 point-to-point links, RFC 6164 /127 inter-router prefixes, and special-purpose address blocks.
Explore SHA-256 collision resistance, verifying software release tarballs across Linux, macOS, and Windows, and why checksums must be paired with cryptographic signatures for authenticity.
Avoid subtle interoperability bugs: IEEE-754 53-bit integer precision limits in JSON, UTF-8 byte streams vs UTF-16 code units in browser Base64 APIs, and RFC 4648 Base64URL tokens.
