Unsupported input
The tool may reject input that does not match the expected content, structure, or file type.
Fix: Confirm the tool input requirements and paste the correct type of data.
header • up to 320x100 / 728x90
Encode or decode HTML entities
Output will appear here...
content bottom • up to 300x250
sidebar • 160x600
Last reviewed:
HTML (HyperText Markup Language) is the core markup language for web pages, defining structure and content that browsers render.
HTML Encoder/Decoder is an online tool that helps you encode HTML /.
It encodes hTML / so the output is text-safe and ready to paste inline into HTML, CSS, JSON, or email templates.
Start with the hTML / input you want to process in HTML Encoder/Decoder.
Get a hTML / result from HTML Encoder/Decoder that is ready to review, copy, and reuse in the next step of your workflow.
The tool may reject input that does not match the expected content, structure, or file type.
Fix: Confirm the tool input requirements and paste the correct type of data.
Missing fields or partial content can block processing or produce weak results.
Fix: Provide the full required input before running the tool.
Sample or placeholder values can lead to output that looks valid but is not ready for real use.
Fix: Replace placeholders with your actual values before relying on the result.
Yes. HTML Encoder/Decoder is a free browser-based tool — no sign-up, no watermark, no rate limits for typical developer workflows.
Almost all of the processing runs client-side in your browser, so pasted input stays on your device unless the tool explicitly calls an external API.
Paste the data type the tool is built for — plain text, code, or a structured payload — into the input panel. The tool processes it as you type.
Yes. HTML Encoder/Decoder is responsive and works on phones, tablets, and desktops. Copy-to-clipboard and download actions are wired for touch devices too.
Use the copy-to-clipboard button or the download action on the output panel to move the result straight into your editor, ticket, or build pipeline.
Continue the workflow with related tools for hTML /, adjacent input and output steps, or other utilities in the same category. You can also browse the full Encoders & Decoders category for more options.
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