Encoding & Decoding Tools - Base64, URL, Hex, Binary & More
Free online encoders and decoders: Base64, URL encoding, HTML entities, binary, hex, octal, decimal ASCII and Morse code. Instant and private.
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Encode and decode text for URLs, APIs, data files, binary representations, HTML, and Morse. Each format solves a different transport or display problem, and none of them is a replacement for encryption.
Paste the value, choose the direction, and inspect the result locally. This is useful for query parameters, data URIs, logs, tests, and protocol debugging.
Encoding vs. Encryption: What Is the Difference?
Encoding changes representation so software can transport or parse data. It does not require a secret key and does not make the data confidential.
Encryption uses a key to protect confidentiality. Hashing creates a one-way digest for integrity or lookup. Do not treat Base64, URL encoding, or hexadecimal as security controls.
The Encoding Tools You Need
- Base64 Encoder & Decoder (Text + Images)Encode and decode Base64 text locally, with context for data URIs, images, JWTs, and padding.
- URL Encoder & Decoder - Percent-Encoding ToolEncode URL parameters and decode percent-escaped values without changing the structure of a full URL.
- Hex to Text & Text to Hex ConverterTranslate UTF-8 text to hexadecimal bytes and inspect hex dumps from protocols, memory, and CTF puzzles.
- Binary to Text & Text to Binary TranslatorConvert text to readable 8-bit binary bytes and decode binary back into UTF-8 text.
- JWT Decoder - Parse JSON Web Tokens SafelyDecode the header and payload of a JSON Web Token locally and understand what the signature does.
When to Use Which Encoder
Use URL encoding for parameter values and reserved characters in web addresses.
Use Base64 for binary data that must travel through text-only systems, such as a compact data URI or an email attachment representation.
Use hex and binary when reading bytes, memory dumps, protocol values, or educational examples. Use HTML entities where a markup context specifically calls for them.
Use decoding to inspect data, not to claim that a token is authentic. A decoded value still needs validation by the system that issued it.
FAQ
Does encoding compress data?
Usually not. Base64 increases size by about one third, and URL or HTML escapes can also make data longer.
Is Base64 secure?
No. Base64 is reversible representation. Anyone with the string can decode it.
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