How I escape HTML entities before showing text on a page

HTML entities let text contain characters like <, >, and & without the browser treating them as markup.

The HTML Entities tool helps with the mechanical part, but I still check the result before using it somewhere real.

The simple idea

HTML entities let text contain characters like <, >, and & without the browser treating them as markup.

I use the tool to make the transformation visible: input on one side, output on the other, and a quick sanity check before I copy anything.

Step 1: Paste the text that may contain HTML special characters

Paste the text that may contain HTML special characters.

Step 2: Escape it before placing it in an HTML context

Escape it before placing it in an HTML context.

Step 3: Check that <script> appears as text, not executable markup

Check that <script> appears as text, not executable markup.

Step 4: Unescape only when you intentionally want the original characters back

Unescape only when you intentionally want the original characters back.

Step 5: Do not use entity escaping as the only security layer for every context

Do not use entity escaping as the only security layer for every context.

Step 6: Remember that HTML, JavaScript, CSS, and URL contexts have different escaping rules

Remember that HTML, JavaScript, CSS, and URL contexts have different escaping rules.

Step 7: Prefer framework escaping defaults when building real apps

Prefer framework escaping defaults when building real apps.

My checklist

Before I trust the result, I check:

• Paste the text that may contain HTML special characters.
• Escape it before placing it in an HTML context.
• Check that <script> appears as text, not executable markup.
• Unescape only when you intentionally want the original characters back.
• Do not use entity escaping as the only security layer for every context.
• Remember that HTML, JavaScript, CSS, and URL contexts have different escaping rules.
• Prefer framework escaping defaults when building real apps.

Small utilities are useful because they remove repetitive work. They are safest when the output is still reviewed.