By DevToolKit
When to Use Base64, URL, and HTML Encoding
Choose the right encoding — Base64 and URL tools in DevToolKit, plus HTML escaping concepts without a dedicated html-encoder utility.
Three different problems
Base64, URL encoding, and HTML escaping solve unrelated transport and display issues. Mixing them produces broken links, mojibake, or false confidence about secrecy.
Base64 — text encoding (In-browser)
Use DevToolKit Base64 to encode or decode textarea text when an API expects an ASCII-safe Base64 string or a config value. It does not accept file uploads or convert arbitrary binary files. Anyone can decode Base64 — it is not encryption.
URL encoding — components and full URLs (In-browser)
DevToolKit URL Encode uses encodeURIComponent and decodeURIComponent in component mode, or encodeURI and decodeURI in full-URL mode. Use the matching mode when preparing or inspecting URL text with spaces, percent sequences, or reserved characters.
URL encoding changes representation; it does not validate a destination, make input trustworthy, or make a link safe to open. Test the resulting URL in the destination that will use it.
HTML escaping — educational
HTML encoding turns <, >, &, and quotes into entities so user-supplied text renders literally instead of executing as markup. Frameworks often escape automatically in templates.
DevToolKit does not ship html-encoder or html-decoder tools. In JavaScript, avoid innerHTML with untrusted strings; use textContent or framework-safe bindings. In other languages, use standard library escape functions.
Encoding vs security
Encoding changes representation; it does not authenticate users or hide secrets. Pair proper auth, TLS, and server-side validation with whatever encoding you apply at the edges.
Encoding checklist
Correct encoder for the layer (transport vs URL vs HTML); Base64 not mistaken for encryption; URLs tested after encode; HTML escaping handled in code when displaying untrusted input.