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Encode and decode Base64, URLs, HTML entities and binary text — developer encoding hub.
Encoding bugs cause production incidents — wrong Base64 padding, double URL encoding and HTML entity mismatches. Tentaco encoding hub lets you round-trip samples locally before fixing code.
Pair with JWT decode for token debugging. Browse related Tentaco tools on this hub, open a studio mode when you need a fuller workspace, and keep files on your device whenever the tool runs locally.
Base64 encode & decode — free
Encode text to Base64 or decode Base64 back to plain text. Tentaco Base64 Encoder / Decoder: review input and get an instant result — free, no sign-up.
URL Encoder — encode URI components
Percent-encode or decode URLs and query string components. Tentaco URL Encoder / Decoder: review input and get an instant result — free, no sign-up.
HTML entities encoder online — free
Escape or unescape HTML entities like & and <. Tentaco HTML Entity Encoder / Decoder: review input and get an instant result — free, no sign-up.
Binary ↔ Text Converter online — free
Convert text to binary and binary back to text. Tentaco Binary ↔ Text Converter: review input and get an instant result — free, no sign-up.
Query String JSON — parse URL params
Convert URL query strings to JSON and back. Tentaco Query String ↔ JSON: review input and get an instant result — free, no sign-up.
LocalThis tool processes data locally in your browser. Tentaco does not receive your file contents for this mode.
No — encoding only, not secrecy.
UTF-8 aware modes handle international text.
JWT uses Base64url — use JWT Decoder for full token parse.