HTML Encoder, Decoder & Viewer
Escape special HTML characters into entities, unescape encoded HTML, or preview live HTML rendering.
How to Use HTML Encoder & Decoder Online
Encode HTML special characters to entities (&, <, >, "), decode HTML entities back to characters, and preview live HTML rendering. Free online tool.
1. Input Data
Paste or upload your data into the tool. We support a variety of formats depending on the specific tool requirements.
2. Process
The tool will instantly process your data. All calculations and conversions are performed locally in your browser for maximum speed.
3. Get Results
Once the processing is complete, you can copy the results to your clipboard or download them as a file.
Frequently Asked Questions
Why encode HTML entities?
HTML entity encoding prevents XSS (cross-site scripting) attacks by converting characters like < and > into safe < and > entities that browsers display as text instead of executing as code.
What characters are encoded?
The 5 critical HTML characters: & (ampersand), < (less-than), > (greater-than), " (double quote), and ' (single quote).
Frequently Asked Questions
Is this HTML Encoder & Decoder Online tool free to use?
Yes, this tool is 100% free to use with no limits, no sign-up required, and no hidden fees.
Is my data secure?
Absolutely. We prioritize your privacy. All processing happens locally in your web browser (client-side). Your data is never uploaded to, stored on, or sent to any external server.
Does it work offline?
Yes, Base64Decoder.app is a Progressive Web App (PWA). Once the site is loaded, you can continue using this tool even without an internet connection.
