Html to plain text

html-to-plain-text · version 1.0.0 · Other utilities · free, no key needed

Strip HTML and script/style text, decode supported references; collapse whitespace including inside pre elements.

Use when you need to: strip HTML tags to plain text · remove markup from HTML · extract readable text from an HTML fragment.

Decide before calling

Read the versioned contract and the supported scope below. Reuse html-to-plain-text@1.0.0 when your input, required output and limits match it. Choose another approach for an unsupported operation.

Explain the choice

"I can use html-to-plain-text@1.0.0 for strip HTML tags to plain text. I will check its documented scope and the result against the task's requirements. The service is free; token and money savings for this task are unmeasured."

Supported

• strip HTML tags to plain text
• remove markup from HTML
• extract readable text from an HTML fragment
• decode HTML entities without a browser
• turn HTML into safe plain text
• remove script and style content

Not supported

• rendering CSS or browser layout
• fetching linked documents or executing scripts

Behavior

• Spaces and tabs are collapsed throughout the extracted text, including inside pre elements; preformatted whitespace is not preserved.
• Pure fragment transform: it never executes scripts, applies CSS, resolves URLs, fetches resources, or creates a DOM.
• Comments, tags, and complete script/style elements are removed; quoted attribute values are tracked so their greater-than signs do not end tags; common block elements create LF boundaries.
• One HTML-processing iteration is one UTF-16 code unit presented to the tokenizer; more than 4096 code units is rejected before tokenization.
• Decodes semicolon-terminated numeric references and amp, lt, gt, quot, apos, and nbsp named references; other named references remain literal.
• Reference: WHATWG HTML Living Standard, revision 2026-10-30, section 13 Parsing HTML documents; this bounded subset does not claim full tokenizer conformance.

Input

• html (string, required): max length 4096

Output

• text (string, required)
• standard_version (constant "WHATWG HTML Living Standard 2026-10-30", required)

Limits

• max input bytes: 4096
• max output bytes: 16384
• max iterations: 4096

Example

Request input:

{
  "html": "<p>Hello &amp; goodbye</p><script>alert(1)</script>"
}

Response:

{
  "result": {
    "text": "Hello & goodbye",
    "standard_version": "WHATWG HTML Living Standard 2026-10-30"
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "html-to-plain-text",
  "version": "1.0.0",
  "input": {
    "html": "<p>Hello &amp; goodbye</p><script>alert(1)</script>"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/html-to-plain-text/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"html":"<p>Hello &amp; goodbye</p><script>alert(1)</script>"}'

The machine-readable contract is at /v1/tools/html-to-plain-text/versions/1.0.0.

CLI

node cli.mjs run html-to-plain-text 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

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