How to use HTML Entity Encoder / Decoder
- 1
Open the HTML Entity Converter
Go to tools.slaytic.com and open the HTML Entity Encoder/Decoder. No sign-up or account required.
- 2
Paste your text or entities
Add plain text to encode, or an entity-laden string to read.
- 3
Choose encode or decode
Encode before placing text into HTML; decode to see what an escaped string actually says.
- 4
Copy the result
Take the converted text into your template, CMS field or document.
How this works in your browser
Encoding converts characters into numeric character references, an ampersand followed by the character’s code point and a semicolon, which every browser and HTML version understands without relying on the named-entity table. That choice favours reliability over readability: named entities are friendlier to read but the full set is large and inconsistently supported in older parsers. Decoding handles both forms, since real-world HTML mixes them freely. The underlying purpose in both directions is separating content from markup: an angle bracket in your text and an angle bracket opening a tag are indistinguishable to a parser unless one of them is escaped, and that ambiguity is the root of both broken layouts and injection vulnerabilities.
HTML Entity Encoder / Decoder vs. traditional online converters
| Feature | HTML Entity Encoder / Decoder (in-browser) | Traditional online converters |
|---|---|---|
| File upload required | No - never leaves your device | Yes - file is sent to a server |
| Processing queue | None - starts instantly | Often, especially at peak times |
| Watermark on output | Never | Common on free plans |
| Usage limits | None - free, unlimited use | Often capped per day or file size |
| Works offline once loaded | Yes, for most tools | No - requires a live connection |
| Account required | No | Often, for anything beyond a trial |
Who uses HTML Entity Encoder / Decoder
Displaying code samples
Escape markup so it appears as literal text rather than being rendered.
Fixing double-encoded text
Decode a string to find where an extra escaping pass was applied.
Preparing CMS content
Encode special characters before pasting into a field that expects raw HTML.
Reading escaped source
Decode entity-heavy markup to see what the text actually says.
Frequently asked questions
Why would I need to encode HTML entities?
To safely display special characters or reserved HTML characters as literal text in a web page without them being interpreted as HTML markup.
What encoding format is used?
Numeric character references, which are universally supported across all browsers and HTML versions.
Can it decode named entities?
Yes, the decoder handles both named entities and numeric entities.
Is encoding entities enough to prevent XSS?
Not on its own, and it would be irresponsible to imply otherwise. Escaping is the right defence for text placed into HTML content, but different contexts need different escaping: inside an attribute, inside a script block, or inside a URL each have their own rules. Use your framework’s built-in escaping in real applications rather than pre-encoding by hand.
Why does my page show & instead of an ampersand?
Because the text was encoded twice. The ampersand became &, then that ampersand was encoded again. Running the value through the decoder once will usually reveal exactly where the extra pass crept in, typically a template escaping something that was already escaped.
Which characters actually need encoding?
In HTML content, the three that carry structural meaning: the ampersand and both angle brackets. Inside attribute values, quotes matter too. Accented characters and symbols do not strictly need encoding on a modern UTF-8 page, though encoding them guarantees display in systems with uncertain character handling.
Is my text sent anywhere?
No. Encoding and decoding both happen inside your browser tab.