Quick start
- Choose Encode when your text contains characters such as <, >, &, quotes, or apostrophes.
- Choose Decode when your text contains entities such as <, &, ", $, or &.
- Paste a small snippet, run the tool, and copy the output only after the entity count looks reasonable.
Best uses
Best for short documentation snippets, examples, copied entity text, and quick checks before placing display-safe text in HTML.
- Show HTML code examples inside a blog post, guide, or documentation page.
- Decode copied entity text so it is easier to read.
- Escape short snippets before placing them in visible HTML text.
- Check whether a string changed after encoding or decoding.
What this tool helps with
The HTML Entity Encoder / Decoder helps with small snippets that need to be shown as text. If you want readers to see a tag instead of the browser treating it like markup, encode the sensitive characters. If you copied entity text and need to read it, decode it.
Match each input label on the tool to the mode that matches your job, plus the small HTML or entity-text snippet you want to convert.
The logic in plain language
In plain language: Encode mode replaces &, <, >, double quotes, and apostrophes with &, <, >, ", and '. Decode mode converts the supported named entities amp, apos, copy, gt, lt, nbsp, quot, and reg, plus valid decimal entities such as $ and hexadecimal entities such as &, back to characters. The examples on the page are there so you can compare your inputs with a filled-out example before copying the answer.
Encode mode replaces five HTML-sensitive characters: &, <, >, double quotes, and apostrophes. Decode mode converts the supported named entities amp, apos, copy, gt, lt, nbsp, quot, and reg, plus valid decimal entities such as $ and hexadecimal entities such as &.
How to read the answer
Read the main output first, then check entity count and changed positions. Entity count tells you how many characters or entity codes changed; changed positions is a quick difference signal between input and output.
- The output is the copy-ready encoded or decoded text.
- Entity count shows how many entity replacements were found.
- Changed positions gives a quick signal for how much the output differs from the input.
- If entity count is 0, either the snippet did not need conversion or the entity name was outside the compact supported set.
Common mistakes to avoid
Most mistakes come from using the wrong kind of encoding, treating escaped text as a security sanitizer, or pasting decoded markup into a real page before reviewing it.
- Do not treat entity encoding as a full security sanitizer.
- Do not decode unknown HTML and paste it into a live page without reviewing it.
- Remember that this tool supports common entities and numeric entity codes, not every named entity ever defined.
- Do not use HTML entities for URL query strings; use URL encoding for links and query values.
Quick encode example
Say you paste <strong>Free & fast</strong> in Encode mode. The input has 28 characters, and the tool changes 5 entities.
The output is <strong>Free & fast</strong>. That means the browser can show the tag text to a reader instead of treating strong as formatting.
- < becomes < at the opening tag.
- > becomes > at the opening and closing tags.
- & becomes & between Free and fast.
- The closing </strong> also has its angle brackets escaped.
Decode a quoted span
If you paste <span title="A&B">Save</span> in Decode mode, the tool changes 7 entities and returns <span title="A&B">Save</span>.
That result is easier to read, but it is also real-looking HTML. Review it before putting it into a page, editor, CMS field, or template.
Numeric entities are supported too
Named entities are only one style. Decimal and hexadecimal numeric entities can represent characters by code point.
For example, Price $9.99 & no tracking decodes 2 numeric entities into Price $9.99 & no tracking. That tells you $ was a dollar sign and & was an ampersand.
What this tool does not sanitize
Encoding a snippet helps display it as text. It does not inspect whether a decoded snippet is safe, remove scripts, validate attributes, or decide which tags your site should allow.
If you are handling untrusted user HTML, use a maintained sanitizer with an allowlist. Treat this tool as a display and readability helper, not a security boundary.
Useful related checks
HTML entity work often sits beside other small developer text checks. Use the neighboring tools when the text belongs to a URL, JSON file, or plain-text cleanup task instead of visible HTML.
Research and references
These references explain character references and the people-first content context behind keeping examples clear and honest.
Worked examples for HTML Entity Encoder / Decoder
5 entities changed from 28 input characters: <strong>Free & fast</strong>
7 entities changed into readable HTML text: <span title="A&B">Save</span>
title="Calculator" data-label="A&B"
2 numeric entities changed: Price $9.99 & no tracking
FAQ in plain language
When should I use the HTML Entity Encoder / Decoder?
Use it when your task matches one of these common needs: Show HTML code examples inside a blog post, guide, or documentation page. Decode copied entity text so it is easier to read. It works best when you already know the text, code, URL, mode, format, or technical setting the page asks for.
What is the HTML Entity Encoder / Decoder doing with my inputs?
In plain language: Encode mode replaces &, <, >, double quotes, and apostrophes with &, <, >, ", and '. Decode mode converts the supported named entities amp, apos, copy, gt, lt, nbsp, quot, and reg, plus valid decimal entities such as $ and hexadecimal entities such as &, back to characters. The examples on the page are there so you can compare your inputs with a filled-out example before copying the answer.
What do the main HTML Entity Encoder / Decoder inputs mean?
Encode characters mode: Use this when you want text such as <strong>Free & fast</strong> to show as visible code instead of being interpreted as HTML markup. Decode entities mode: Use this when copied text contains entity codes such as <, &, ", $, or & and you want to read the characters again. Entity count: The result counts how many characters or entity codes were converted. For example, <strong>Free & fast</strong> changes 5 entities when encoded. Changed positions: This is a quick difference check between input and output text. It helps confirm that encoding or decoding actually changed the snippet. Security boundary: Encoding helps display code as text. It does not validate HTML, remove unsafe scripts, or make untrusted user input safe to render as real markup.
How should I read the HTML Entity Encoder / Decoder answer?
Read the output next to your original input. If the tool changes format, units, encoding, spacing, or capitalization, compare a small sample before copying the whole result into another app.
What should I double-check before trusting the answer?
Entity encoding is useful for displaying code examples as text, but it is not a complete sanitizer for untrusted HTML or script content. Also check the selected mode, input format, encoding, and whether the text includes private keys, passwords, or sensitive data.
What characters does encode mode change?
Encode mode changes ampersands, less-than signs, greater-than signs, double quotes, and apostrophes. Those become &, <, >, ", and ' so the snippet can be shown as text in HTML.
Does this encode every possible symbol into an HTML entity?
No. It focuses on the characters that most often break visible HTML text or code examples. Regular letters, numbers, spaces, punctuation, and symbols that do not need escaping are left alone.
Related tools
- JSON Formatter Format and validate JSON with two-space indentation and optional sorted object keys.
- URL Encode / Decode Percent-encode URL component text or decode percent-encoded text.
- Text Case Converter Convert text to uppercase, lowercase, title case, sentence case, camelCase, snake_case, and kebab-case.
Keep exploring
If this guide is close but not exact, these links keep you near the same kind of problem.
- Developer Tools Browse the full category for related tools that help with the same job.
- All free tools Search the complete Access Free Tools library by task, category, or tool name.
- All tool and utility guides Find more plain-language examples, logic notes, mistakes, and result explanations.
- Free tool resources Start here when you are not sure which tool page fits.
Privacy and copying results
Recent answers stay visible only while you work in the current browser tab. They are not sent to a server.
Use Copy answer when you want to save the inputs and result in notes, homework, a message, or a project list. Check the units, labels, and limits before copying.