Encoding & decoding
Base64, URL, HTML entity and Unicode encoding, both directions, on text of any length. 11 tools, including Base64 Encoder / Decoder, JWT decoder, URL encoder / decoder and Hex to text converter. All free, with no account and nothing to install.
Base64 Encoder / DecoderEncode and decode Base64 online — free.JWT decoderDecode a JWT, read its claims and dates, and check its HMAC signature.URL encoder / decoderEncode and decode URLs and query parameters.Hex to text converterDecode a hexadecimal string back into readable text (ignores spaces and 0x prefixes).HTML Entity Encoder / DecoderConvert text to HTML entities and back, escaping <, >, &, quotes and optionally all non-ASCII characters.JSON String Escape / UnescapeTurn raw text into a JSON-safe string and back, with control characters, \uXXXX, emoji surrogate pairs and lone surrogates handled exactly like JSON.stringify.String escape / unescapeEscape a string for JSON/JavaScript or unescape it back to raw text.Text to hex converterConvert text to hexadecimal and back, byte by byte in UTF-8 — é is c3 a9 and an emoji is four bytes.Unicode escape / unescapeEscape non-ASCII characters to \uXXXX sequences, or decode them back.Byte counter (UTF-8)Count the characters, UTF-8 bytes, words and lines in your text. Takes a whole file, so a long log does not have to go through the clipboard.UUID Validator / DecoderValidate UUIDs and decode their version, variant, and the timestamp and MAC a v1 carries.