converting-html

converting-html is a skill for Claude Code, Codex from xberg-io/html-to-markdown. It costs 38 tokens per session (1,015 once invoked), scanned A, original, MIT.

A guide to converting HTML into Markdown, Djot, or plain text. HTML is the markup used to structure web pages, while Markdown and Djot are simpler text formats.

In plain words
What is it for?
Use it to convert files or standard input, choose an output format, control headings and code blocks, or produce text without Markdown syntax.
Why use it?
It turns saved pages, email bodies, or HTML fragments into cleaner text without manually removing tags and formatting.

Skill for Claude CodeCodex

Part of the html-to-markdown plugin — 6 skills, 1 MCP server shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/xberg-io/html-to-markdown/converting-html
Any agent
npx skills add xberg-io/html-to-markdown --skill converting-html
Clone the repo
git clone --depth 1 https://github.com/xberg-io/html-to-markdown

Made for: Claude Code, Codex.

Or install html-to-markdown, the plugin that ships this one along with the rest of its 6 skills, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for converting-html

README.md
[![agentmods](https://agentmods.dev/badge/skills/xberg-io/html-to-markdown/converting-html.svg)](https://agentmods.dev/skills/xberg-io/html-to-markdown/converting-html)
Your own site
<a href="https://agentmods.dev/skills/xberg-io/html-to-markdown/converting-html"><img src="https://agentmods.dev/badge/skills/xberg-io/html-to-markdown/converting-html.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,015 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00038 $0.01015
Opus 5 $0.00019 $0.00508
Sonnet 5 $0.00008 $0.00203
Haiku 4.5 $0.00004 $0.00102

Measured 5d ago against content hash 5b289a9d4373, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

converting-html scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugin/.ai-rulez/skills/converting-html/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Converting HTML

Use this when the user wants to turn HTML into clean Markdown (or Djot) — a saved page, an HTML email body, a fragment, or a string. Conversion is driven by flags with a positional FILE (stdin is the default input when no file is given); the only subcommand is mcp (run-as-server, see the using-the-mcp-server skill).

Basic conversion

# File to stdout
html-to-markdown input.html

# File to a file
html-to-markdown input.html -o output.md

# From stdin
cat page.html | html-to-markdown
echo '<h1>Title</h1><p>Body</p>' | html-to-markdown

The default (no --json) prints plain Markdown text. Use --json only when you need structured metadata/tables (see the extracting-metadata and extracting-tables skills).

Output format

html-to-markdown input.html --output-format markdown   # default
html-to-markdown input.html --output-format djot        # Djot markup
html-to-markdown input.html -f djot                      # short form

To get plain text (no Markdown syntax), strip tags and treat blocks inline:

html-to-markdown input.html --convert-as-inline --strip-tags "script,style"

Heading and code-block styles

Flag Values Default Effect
--heading-style atx, underlined, atx-closed atx # h1 vs h1\n=== vs # h1 #
--code-block-style backticks, indented, tildes backticks Fence style for code blocks
--code-language / -l string "" Default language for fenced blocks
html-to-markdown input.html --heading-style underlined --code-block-style tildes

Lists and text formatting

# Bullet characters cycle by nesting depth; indent width 1–8
html-to-markdown input.html --bullets '*+-' --list-indent-width 2

# Indent with tabs instead of spaces
html-to-markdown input.html --list-indent-type tabs

# Emphasis symbol and escaping
html-to-markdown input.html --strong-em-symbol _ --escape-misc

Read the full file on GitHub · 124 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 124 lines · 38 tokens per session scan A 5b289a9d4373

Subscribe to this mod's changes

converting-html is a skill published in the GitHub repository xberg-io/html-to-markdown (863 stars, last pushed 2d ago), licensed MIT. It adds 38 tokens to every session and 1,015 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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