HTML Minifier

Overview

You send an HTML document and we return a smaller version by collapsing removable whitespace and stripping comments (plus optional conservative markup cleanups when you enable them). Content inside pre, textarea, script, and style stays byte-stable — we never minify or parse JavaScript. This is not a sanitizer: dangerous markup you send in, including script payloads, comes back out. Use web.sanitize_html when you need XSS-safe HTML.

You want smaller markup without a minifier quietly rewriting a script block or being mistaken for a safety check it never performed.

When to use it

Scope

Non-goals

• Does not minify or even parse the JavaScript inside script elements
• Does not minify CSS beyond collapsing its whitespace when you ask
• Does not make markup safe — web.sanitize_html is the skill for that
• Does not reorder attributes or restructure the document
• Does not render the page or load anything it links to
• Does not claim the smallest possible output

Properties

Capabilities

Cost & billing

Flat rate per invocation

File handling

How we handle your data

Input schema

Output schema

API contract

curl -sS -X POST "$BASE/v1/execute" -H "Authorization: Bearer $KEY" -H 'Content-Type: application/json' -d '{"skillKey":"web.minify_html","input":{"html":"<p>Hi</p>"}}'

import { Squillify } from "@squillify/sdk";

const sq = new Squillify({ apiKey: process.env.SQUILLIFY_API_KEY });

const { output } = await sq.execute("web.minify_html", {"html":"<html>\n  <body>\n    <!-- comment -->\n    <p>Hello   world</p>\n  </body>\n</html>"});

Errors

Other limits

Limitations

• Does not minify or even parse the JavaScript inside script elements
• Does not minify CSS beyond collapsing its whitespace when you ask
• Does not make markup safe — web.sanitize_html is the skill for that
• Does not reorder attributes or restructure the document
• Does not render the page or load anything it links to
• Does not claim the smallest possible output
• Making untrusted markup safe to display, which web.sanitize_html handles
• Bundling or compressing JavaScript and CSS

How to call

POST /v1/execute (requires authentication)

{
  "skillKey": "web.minify_html",
  "input": {
    "html": "<html>\n  <body>\n    <!-- comment -->\n    <p>Hello   world</p>\n  </body>\n</html>"
  }
}

Examples

{
  "html": "<html>\n  <body>\n    <!-- comment -->\n    <p>Hello   world</p>\n  </body>\n</html>"
}

{
  "outputBytes": 57,
  "html": "<html><head></head><body><p>Hello world</p></body></html>",
  "transformations": [
    "REMOVE_COMMENTS",
    "COLLAPSE_WHITESPACE"
  ],
  "findings": [],
  "savedPercent": 27.85,
  "inputBytes": 79,
  "savedBytes": 22,
  "_meta": {
    "parserProfile": "jsoup-1.18.3",
    "preservedRegions": 0
  }
}

{
  "html": "<html><body><script>var x = 1;</script><p>Hi</p></body></html>"
}

{
  "outputBytes": 75,
  "html": "<html><head></head><body><script>var x = 1;</script><p>Hi</p></body></html>",
  "transformations": [
    "COLLAPSE_WHITESPACE"
  ],
  "findings": [],
  "savedPercent": 0,
  "inputBytes": 62,
  "savedBytes": 0,
  "_meta": {
    "parserProfile": "jsoup-1.18.3",
    "preservedRegions": 1
  }
}

Recommended use cases

• Shrink HTML templates before you ship or store them
• Strip authoring whitespace and build comments out of a static page
• Measure how much a page would gain from minification

Avoid for

• Making untrusted markup safe to display, which web.sanitize_html handles
• Bundling or compressing JavaScript and CSS

Related skills

Composable with

Safety & privacy

• Runs without calling any external service.
• Your payloads are never stored permanently.
• Telemetry captures metadata only — never your payload contents.
• We never train models on your payloads.
• No human reviews your payloads.

Tags