About this tool
HTML Entities act as character structures to display symbols, mathematically active equations, and characters that are historically reserved for standard HTML layout interpretation (such as the angle brackets < and >).
Injection Mitigation Strategies
Failing to escape raw browser inputs creates vulnerability gateways for Cross-Site Scripting (XSS) parameter injections. This utility escapes characters into unicode representation formats (such as converting `<` to < or <), rendering raw code snippets safely inside user browsers.
Frequently asked questions
Everything you need to know about HTML Entity Encoder.
Why do I need to encode HTML entities?
Certain characters (<, >, &, ", ') have special meaning in HTML. If these appear in user-generated content or dynamic values without encoding, browsers may interpret them as markup — causing layout breaks or, more critically, cross-site scripting (XSS) vulnerabilities.
What is the difference between named and numeric HTML entities?
Named entities use a descriptive identifier (e.g. & for &, < for <). Numeric entities use the Unicode code point in decimal (&) or hexadecimal (&) form. Both are equivalent and render identically in browsers; named entities are simply more readable.
Does encoding HTML entities protect against XSS attacks?
Encoding output is the primary defence against reflected and stored XSS. When all dynamic values output to HTML are entity-encoded, browsers render them as plain text rather than executing them as markup or script. It should be combined with a strict Content-Security-Policy for full protection.
Can the tool decode entities back to their original characters?
Yes. The decoder mode reverses the process, converting HTML entities (named or numeric) back to their original characters. This is useful for reading encoded API responses or debugging template output.
Is my input processed on a server?
No. All encoding and decoding happens inside your browser tab using DOM-based parsing techniques. No content is transmitted to any external server.