HTML Encoder
Escape markup characters so text can be inserted into HTML source as text rather than code.
Free browser tool
No Matrix computer needed
✓ No account or card
✓ Use the result right away
✓ Task-specific limits below
Workspace
Use html encoder
Runs in this browser tab
Result
How to use it
Paste text to replace HTML-sensitive characters with safe entities for an HTML text context.
Try this example
<script>alert("x")</script>What to check
HTML encoding is context-specific; this output is not a substitute for safe DOM APIs.
Review the result before using it in a published page, application, or agent configuration.
Quick answers
Frequently asked questions
Where can I safely use HTML-encoded output?
It is suitable for displaying text inside an HTML text context. Attribute, script, URL, and CSS contexts require their own encoding rules.
Does HTML encoding sanitize an entire webpage?
No. This tool escapes input text; it does not audit scripts or make arbitrary HTML safe to render. Prefer safe DOM text APIs.
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