Is encoding secure?
Encoding changes representation. It does not provide confidentiality or trust by itself.
Encoding Tools
Encoding Tools for Base64, URLs, and HTML Entities
Encoding tools help developers move text safely through systems that assign special meaning to certain characters. A space inside a URL, an angle bracket inside HTML, or binary bytes inside a text-only field can change how a parser reads the value. Encoding gives those values a safe representation for the context where they appear.
This category includes Base64 encoding and decoding, URL component encoding and decoding, and HTML entity encoding and decoding. These tools are useful for API examples, OAuth redirects, query strings, HTML snippets, documentation, and debugging copied values from logs or browser tools.
Encoding is not the same as encryption. Encoded values are usually reversible, so they should not be treated as protected secrets. Use these tools to inspect and transform text, and use real cryptography or authentication controls when confidentiality or trust matters.
Tools
Available in this category
Existing URLs remain active, and new tools are organized under clean category paths.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to readable UTF-8 text directly in your browser.
Open toolURL Encoder/Decoder
Encode URL components and decode percent-encoded strings in your browser.
Open toolHTML Entity Encoder/Decoder
Encode special HTML characters into entities or decode HTML entities back to readable text.
Open toolUse cases
Decode Base64 snippets from headers or config values.
Encode query parameter values for URLs.
Escape HTML code examples for documentation.
Decode entity-heavy text copied from templates.
Related guides
8 min read
What is Base64 encoding
Base64 turns bytes into text-safe characters for transport, but it is reversible and should not be treated as security.
8 min read
URL encoding explained
URL encoding protects values inside URLs so reserved characters are interpreted as data instead of syntax.
7 min read
HTML entities explained
HTML entities let special characters display as text instead of being interpreted as markup.
9 min read
Base64 for API debugging
Base64 is common in headers, tokens, data URIs, and examples, but it is reversible encoding rather than protection.
9 min read
URL encoding vs decoding
URL encoding prepares text for a URL component; decoding turns percent-encoded sequences back into readable text.
9 min read
UTF-8 explained simply
UTF-8 is the dominant text encoding on the web because it can represent ASCII and international characters efficiently.
9 min read
Percent encoding explained
Percent encoding represents bytes as percent signs followed by hexadecimal digits so URL parsers can preserve data.
9 min read
What is XSS
XSS happens when untrusted content runs as script in a user's browser, often because output was not encoded for the right context.
FAQ
When should I URL encode text?
Encode text when it will be used as a URL component, such as a query parameter value.
Why encode HTML entities?
Entity encoding lets code-like text display as text instead of being parsed as markup.
Do these tools need a backend?
No. Encoding and decoding run in the browser.