ToolsTool category
Encoding
The escapes and alphabets that let arbitrary bytes survive a URL, a header, a form field or a JSON string.
5 toolsSorted by the GitHub stars of each tool's open-source project · snapshot Oct 23, 2026
#01
JWT decoder
Read a token's header and claims, and see whether it has expired.
#02Number base converter
Convert between binary, octal, decimal, hex and base 36 — arbitrarily large.
#03Base64 encoder and decoder
Encode and decode Base64, standard or URL-safe, with correct UTF-8 handling.
#04HTML entity encoder and decoder
Escape markup-breaking characters, or turn entities back into text.
#05URL encoder and decoder
Percent-encode a query value, or a whole URL, without breaking its structure.