CodeLore
Practical developer references and browser-only tools. Clear, ad-light references for the practical parts of software development — and fast tools that run in your browser.
Learn by topic
Original, synthesized references — not copied from any single source.
Encodings
How text and binary become bytes: Base64, URL encoding, UTF-8.
Hashing & checksums
Fingerprints for integrity and passwords: MD5, SHA-1, SHA-256.
Data formats
JSON and CSV: shape, rules, and safe conversion.
Dates & time
Timestamps, UTC, and why time zones are harder than they look.
Regular expressions
The daily regex constructs, with runnable examples.
Browser-only tools
No upload, no account. Everything runs locally in your tab.
Base64 encoder / decoder
Convert text to and from Base64. Runs entirely in your browser — nothing is uploaded.
Hash & checksum
Compute MD5, SHA-1, SHA-256, SHA-384, SHA-512 of text using your browser. No upload.
JSON formatter & validator
Pretty-print, minify, and validate JSON. Runs locally in your browser.
URL encoder / decoder
Percent-encode and decode query strings and path segments. Browser-only.
Reference content refreshed 2026-09-17.