René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Does Base64 encode or encrypt data?","acceptedAnswer":{"@type":"Answer","text":"No. Base64 only re-represents data — it doesn't scramble, compress, or protect it. Anyone can decode it back to the original text with no key required, so use real encryption, such as AES, if you need confidentiality."}},{"@type":"Question","name":"Why does the output end with = or ==?","acceptedAnswer":{"@type":"Answer","text":"Base64 packs 3 input bytes into 4 output characters. When the input length isn't a multiple of 3 bytes, one or two = characters are appended so the output still ends on a full 4-character group — one = for a remainder of 2 bytes, two (==) for a remainder of 1 byte."}},{"@type":"Question","name":"Is this the same encoding used in JWTs and URLs?","acceptedAnswer":{"@type":"Answer","text":"No. JWTs and URL-safe contexts use Base64URL (RFC 4648 section 5), which swaps + and / for - and _ and usually drops the = padding. This tool produces standard Base64, so you'd need that substitution before using its output as a JWT segment or inside a URL."}},{"@type":"Question","name":"Will special characters, accents, or emoji break the encoding?","acceptedAnswer":{"@type":"Answer","text":"No — the tool converts text to UTF-8 bytes with TextEncoder before encoding, so accented letters, emoji, and other multi-byte characters round-trip losslessly. A naive btoa(text) call skips that conversion and throws on any character outside the Latin-1 range, which is a common bug in hand-rolled encoders."}},{"@type":"Question","name":"Is there a limit on how much text I can encode?","acceptedAnswer":{"@type":"Answer","text":"No hard limit. The tool processes input in 32,768-byte chunks internally to avoid the call stack size exceeded error a naive one-shot implementation hits on very large strings, so multi-megabyte pastes still encode correctly — just a little slower to render."}}]}

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{"@context":"https://schema.org","@type":"WebSite","@id":"https://www.w3docs.com/#website","name":"W3docs","url":"https://www.w3docs.com/","inLanguage":"en","publisher":{"@id":"https://www.w3docs.com/#organization"}}