What is HTML Encoder/Decoder?

An HTML encoder/decoder is a free online tool that converts special characters to HTML entities and decodes HTML entities back to plain text for web development.

How do I use this HTML Encoder/Decoder?

Paste your text into the input field and click Encode to convert special characters to HTML entities, or click Decode to convert entities back to plain text.

Is this HTML Encoder/Decoder free?

Yes, this tool is completely free to use with no signup required.

HTML Encoder/ Decoder

Convert text to HTML-encoded entities and back. Encode or decode with one click.

Encode quotes (" ') Encode all special chars

Input0 chars

Output0 chars

How to Use This Tool

Paste the source string or data into the HTML Encoder input box above.
The HTML Encoder processes the input instantly and shows the result in the output box below.
Copy the encoded or decoded result with one click, or switch direction to reverse the operation.

Common Use Cases

API payload preparation: Developers run text through the Html Encoder before embedding in URLs, JSON, or HTTP headers that require safe character sets.
Legacy system integration: Encode or decode data passing between modern apps and older systems that expect specific character encodings.
Security and obfuscation: Use encoding to safely transport binary payloads through text-only channels like email or chat.

Frequently Asked Questions

Which character set does the Html Encoder use?

The tool follows the relevant published specification (RFC or W3C standard) for this encoding scheme. Characters outside the supported set are escaped or replaced according to the spec; check the output for percent-escapes or backslash sequences.

Is encoding reversible without data loss?

Yes for well-formed input. The encoder and matching decoder produce identical output on round trip, character for character. Edge cases like invalid byte sequences in the input may produce replacement characters; validate the source first.

How do I handle Unicode characters?

Modern encodings (UTF-8, percent-encoding, Base64) preserve all Unicode code points. Each multi-byte character is encoded as its byte sequence. Legacy schemes like ASCII strip or replace anything outside 0x00-0x7F; check the encoding spec for non-ASCII behavior.