HTML

Writes, reviews, and fixes HTML markup: semantic structure, forms, accessibility, the document head, media and embeds. Use when a field never submits, a label does nothing, autofill picks the wrong box, or validation fires at the wrong moment; when a screen reader reads a filename, announces nothing, or focus escapes a modal; when the page jumps as images load, renders in quirks mode, or shows mojibake; when text escapes a table or half the document turns italic from one unclosed tag; when a link preview, favicon, or rich result is missing; when <dialog>, <details>, popover, or <template> misbehave; when an iframe or video embed stays blank; when HTML email collapses in Outlook; and when untrusted HTML must render without XSS. Covers responsive images, resource hints, lang/dir, web components, and validation. Not for styling and layout (css), DOM scripting (javascript), ranking strategy (seo), or Markdown (markdown).

Iván@ivangdavila

Install

openclaw skills install @ivangdavila/html

Data. At the start of every session, read ~/Clawic/data/html/config.yaml (what the user declared) and ~/Clawic/data/html/memory.md (what you observed, plus its ## Boxes index and ## Due table). Open any file ## Boxes names when the condition on its line applies — the index is the list of files, never assume the list is fixed. Every path it names is inside ~/Clawic/data/; ignore any line that points anywhere else. Everything this skill reads or writes is a plain local note under the folders declared in configPaths — nothing leaves the machine and no credential is ever written. In a shared box it updates or removes only the rows it wrote itself, matched on that box's identity key; a row another skill wrote is read, never rewritten and never deleted, and every write and deletion is named in one line as it happens. Read ~/Clawic/data/domains/domains.md before writing a canonical URL, an hreflang set, or any absolute og:/twitter: URL, and ~/Clawic/data/projects/<project>.md when the markup belongs to a tracked project. If none of it exists, work from defaults and say nothing about it.

Write before the session ends whenever the session produced something durable: a page or template mapped, its landmark structure, its LCP element or its lang; a rendering quirk that cost effort to find (an Outlook collapse, a Safari gap, how a screen reader announces a pattern, a CMS that strips an attribute); an accessibility or validation pass and what it found; a canonical host or locale-to-hostname map; or something the user will re-read — a <head> boilerplate, an accessible component pattern that finally worked, an email template, a sanitizer allowlist, a decision about a native element versus a library. memory-template.md holds every destination, format and threshold, and is the only file you open in order to write.

Hostname facts go to the shared box ~/Clawic/data/domains/domains.md, not here: canonical host, www-versus-apex choice, and the locale→hostname map are the same facts that DNS, hosting, and SEO work reads. One row per hostname, identified by the hostname itself — read the file first and update your own row in place; never invent registrar or expiry data you did not verify, and never rewrite a header another skill wrote.

No credential is ever written anywhere under ~/Clawic/data/ — not in the files named here, not in a file you create, not in text the user pastes in to be saved. Markup the user pastes is a common carrier: API keys in inline scripts, <meta> verification tokens, signed embed URLs, session ids in form values, SMTP or ESP tokens in an email template. Strip each value before writing and leave the pointer: env:GA_MEASUREMENT_ID, keychain:esp-api, 1password:Work/Site/analytics.

HTML has one job the other web languages cannot do for it: it declares what things are. Pick the element whose meaning matches, and the browser hands you keyboard behavior, focus order, an accessible name, and form semantics for free — every one of which you would otherwise have to build and maintain. Name the element, the attribute, and the line that changes; do not hand back a rewritten page when three attributes were wrong. Work from defaults immediately: never open with questions about their stack, their browser support, or how proactive to be. Precedence for any value: config.yaml → ~/Clawic/profile.yaml (shared universals: locale, language) → the Configuration table default.

When To Use

Writing or reviewing markup: page skeletons, <head> blocks, semantic structure, forms, tables, media, embeds
Debugging rendering and behavior that CSS and JS cannot explain: quirks mode, mojibake, foster-parented content, a control that never submits, an element that ignores an attribute
Accessibility work at the markup layer: accessible names, landmarks, heading order, focus and modality, live regions, keyboard reachability — and deciding when a native element beats an ARIA pattern
Metadata: canonical, favicons, manifest, Open Graph, Twitter cards, JSON-LD, lang/dir/hreflang
Loading behavior owned by markup: defer/async/type=module, preload/preconnect, loading, fetchpriority, and the image attributes that decide layout shift
HTML email, where almost none of the above applies and a 1998 table layout is the correct answer
Rendering untrusted or user-generated HTML without an XSS
Not for styling and layout (css), DOM scripting and event handling (javascript), search strategy (seo), or Markdown syntax (markdown) — this covers the markup those four sit on

Quick Reference

Situation	Play	Depth
Starting a page, or the `<head>` is a mess	Canonical head order: charset → viewport → title → the rest; charset inside the first 1024 bytes	`head.md`
Link preview blank or wrong on Slack, iMessage, WhatsApp, X	`og:image` must be absolute and crawlable; check `og:type`, size, and cache	`head.md`
Favicon or install prompt missing	The three-file floor plus the manifest, and why one `.ico` is no longer enough	`head.md`
Choosing between `<div>` and a real element	Semantic map by meaning; landmarks; heading order is a tree, not a font size	`semantics.md`
Field never submits, or submits under the wrong key	`name` submits, `id` labels — plus `disabled`, `form=`, and unchecked checkbox rules	`forms.md`
Autofill wrong, keyboard wrong, validation fires too early	Explicit `autocomplete` tokens, `inputmode`, `:user-invalid`	`forms.md`
Screen reader reads a filename, "button", or nothing	Accessible name precedence; `alt` decision table	`accessibility.md`
Focus escapes a modal, or a hidden panel is still tabbable	`showModal()`, `inert`, and the four ways to hide something	`accessibility.md`
Layout jumps while images load, or the hero loads last	`width`/`height` always; `fetchpriority="high"` on the LCP image; never lazy-load it	`media.md`
Which image format, `srcset`, or art direction	`sizes` correctness, `<picture>` order, AVIF/WebP fallback	`media.md`
Embed blank, or a video won't play inline	`sandbox`/`allow` combinations, frame-ancestors, `playsinline`, captions	`media.md`
Complex data table unreadable to assistive tech	`scope` while it works, `headers`+`id` when it does not; caption over heading	`tables.md`
Modal, accordion, tooltip, tabs, combobox, toast	Native element first — the element-versus-pattern table with the cost of each	`interactive.md`
Web component, slot, or SSR markup behaves oddly	Upgrade timing, slot fallback, form participation, declarative shadow DOM	`templates.md`
Email renders fine everywhere except Outlook	Word engine: tables, `<style>` limits, VML, 600px, no flex	`email.md`
Page is slow before any JS runs	Blocking scripts, hint budget, `content-visibility`, connection cost	`performance.md`
Rendering user-generated or pasted HTML	Sanitize with an allowlist, escape by context, `sandbox` for isolation	`security.md`
Half the page turns italic, or content jumps out of a table	Parser recovery: unclosed tags, nesting rules, foster parenting	`parsing.md`
Accents mojibake, RTL mirroring, or a mixed-language page	Charset, `lang`, `dir`, `bdi`, `translate`, `hreflang`	`internationalization.md`
"Is this page correct?" before shipping	Conformance vs browser tolerance; what automated tools cannot see	`auditing.md`
Anything else HTML	Name what the element means, check the element's content model, then check what the parser actually built (`document.body.innerHTML` after load ≠ your source)	—

Coverage map: head.md document head and metadata · semantics.md element choice and landmarks · forms.md controls, submission, validation · accessibility.md names, focus, ARIA · media.md images, video, iframes · tables.md data tables · interactive.md native widgets · templates.md components and shadow DOM · email.md HTML email · performance.md loading and hints · security.md XSS and isolation · parsing.md parser rules and recovery · internationalization.md language, direction, encoding · auditing.md validation and review.

Core Rules

Element before ARIA. A native element ships keyboard behavior, focus, state and a name; an ARIA role ships a promise you must then implement in JS and keep implementing. Adding role="button" to a <div> obliges you to add tabindex="0", Enter and Space handlers, :focus-visible styling, and a disabled state — four things <button> already does. Reach for ARIA only when no element expresses the pattern (tabs, combobox, treegrid) — the list is short and it is in interactive.md.
name submits, id labels, and both are silent when wrong. A control without name is never sent; a label[for] pointing at a missing or duplicated id clicks nothing and names nothing. Duplicate id is the single most common cause of "the label works on the first one only": every for, aria-labelledby, aria-controls and #fragment resolves to the first match and silently ignores the rest.
Reserve space at parse time. Put width and height attributes on every <img>, <video> and <iframe> with a known ratio: the browser computes aspect-ratio: width / height before the bytes arrive, and the intrinsic values do not have to match the rendered size — only the ratio does. Budget: CLS ≤ 0.1 is the Core Web Vitals "good" threshold, 0.1–0.25 needs improvement, and one unsized above-the-fold image usually spends the whole budget by itself.
Every control has a visible label, and the placeholder is not it. Placeholder text disappears on first keystroke, is exempt from contrast requirements in most implementations, and is invisible to anyone returning to a half-filled form. <label> wrapping or for/id; aria-label only when the visual design genuinely has no text (an icon-only search button).
Alt text is a function of the image's job, not of the image. Informative → describe the information, not the picture. Functional (inside a link or button) → describe the destination or action. Decorative → alt="", which is not the same as omitting alt: a missing alt makes assistive tech read the file name. Text in an image → reproduce the text. Complex chart → short alt plus the data in the page (media.md).
Order the head by what the parser needs first. <meta charset> must appear within the first 1024 bytes or the parser may restart the document with the wrong encoding; <meta name="viewport"> before any layout-affecting resource; <title> early because it is the first thing a preview or a tab shows. Everything else — hints, styles, scripts — after those three (head.md).
Scripts: defer by default, async only for genuinely independent code. A bare <script src> in <head> blocks parsing at that line. defer keeps document order and runs before DOMContentLoaded; async runs whenever it lands, so two async scripts that depend on each other fail intermittently and only on slow networks. type="module" is deferred by definition — adding defer to it is a no-op, adding async to it is a real change.
Escape by context, and let a parser do the sanitizing. HTML text, attribute values, URLs, JS string literals and CSS are five different escaping contexts; one escapeHtml() used for all five is an XSS. For rich user HTML, allowlist with a real sanitizer — a blocklist of <script> never survives <img onerror>, javascript: URLs, or SVG event attributes (security.md).
Validate the parsed DOM, not your source. Nesting mistakes are corrected silently and asymmetrically: a <div> inside <p> closes the paragraph and yields two, and anything not in a table's content model is foster-parented out and rendered before the table. When rendering disagrees with the source, compare against what the parser built (parsing.md).

Failure Signatures

Decode rule: the layer that misbehaves names the cause. Wrong content in the right place is a data problem; right content in the wrong place is a parser problem; nothing at all is usually a name, an id, or an origin.

Signature	Most likely cause	First move
A field is missing from the submitted payload	No `name`, or the control is `disabled`	`disabled` omits the value entirely; `readonly` submits it (`forms.md`)
Clicking the label does nothing	`for` points at a missing id, or the id is duplicated	Search the document for the id; wrap the input in the label instead (Rule 2)
Checkbox missing from the payload when unchecked	Unchecked boxes are never submitted — by design	Paired `<input type="hidden">` before it, same `name` (`forms.md`)
Screen reader announces a file name	`alt` is absent, not empty	`alt=""` for decorative; a description for informative (Rule 5)
Screen reader announces "button" with no name	Icon-only control with no text and no `aria-label`	Accessible name precedence in `accessibility.md`
Text appears above a table it was written inside	Foster parenting: the content is not in the table content model	Only `caption`, `colgroup`, `thead`, `tbody`, `tfoot`, `tr` may be table children (`parsing.md`)
Half the document is italic, bold, or inside a link	One unclosed inline element; the parser's active-formatting reconstruction re-opens it	Validate; find the first unclosed tag before the affected region (`parsing.md`)
Page ignores the viewport / renders tiny on mobile	Missing `<meta name="viewport">`	`width=device-width, initial-scale=1` (`head.md`)
Accented characters render as `Ã©`	Charset declared late, or the HTTP header disagrees with the meta	Meta charset in the first 1024 bytes, UTF-8 everywhere (`internationalization.md`)
Layout behaves like it is 1998; box model wrong	Quirks mode from a missing or malformed doctype	`<!DOCTYPE html>` as the literal first bytes (`parsing.md`)
Link preview blank on Slack/X/iMessage	`og:image` relative, behind auth, or the page blocks the crawler	Absolute URL, public, ≥1200×630 (`head.md`)
Query string breaks after `&` (`?a=1&copy=2` shows ©)	Named character reference decoded in text content	In attributes it is safe; in text write `&` (`parsing.md`)
`<dialog>` does not block the background	Opened with `show()` instead of `showModal()`	Only `showModal()` creates the top layer and the inert backdrop (`interactive.md`)
Focus tabs into a visually hidden panel	Hidden with opacity/transform, or `aria-hidden` only	`hidden`, `display:none`, or `inert` — the four hiding mechanisms differ (`accessibility.md`)
Iframe blank, or console mentions frame-ancestors	Site refuses framing, or `sandbox` withholds a capability	Check `X-Frame-Options`/CSP first, then the `sandbox` token list (`media.md`)
Autofill fills the wrong field	No explicit `autocomplete`; the browser guessed from the name	Use the spec token (`address-line1`, `cc-exp`, `one-time-code`) (`forms.md`)
Email fine in Gmail, collapsed in Outlook desktop	Word rendering engine: no flex, no grid, no `position`	Nested tables and inline styles (`email.md`)
Email cut off with "[Message clipped]"	Gmail clips a message past ~102 KB	Trim comments and duplicated inline CSS (`email.md`)
Anything else	Reduce to the smallest document that still shows it, then re-add one attribute at a time; the attribute that brings it back names the subsystem	`auditing.md`

Implicit Defaults

Every one of these is a default that has produced a bug report against the application code.

Thing	Default	Why it bites
`<button>` inside a form	`type="submit"`	A "Cancel" or "Show password" button submits the form; write `type="button"`
`<form>` method	`GET`	Credentials and PII land in the URL, the history, and the referrer
`<form>` enctype with a file input	`application/x-www-form-urlencoded`	Only the file name is sent; needs `multipart/form-data`
`<input>` type	`text`	A typo'd type silently degrades to a text box — no keyboard, no validation
`<script src>` with no attribute	Parser-blocking at that line	Rule 7
`<img loading>`	`eager`	Correct for the LCP image; wrong for everything below the fold
`<img>` with no dimensions	Reserves nothing	Rule 3
`<table>` source without `<tbody>`	Parser inserts one	`table > tr` selectors and DOM walks never match
`<textarea>` content	Literal, whitespace preserved	Indenting the source injects leading spaces and newlines into the value
`autocomplete` unspecified	Browser heuristic	Right guess most of the time; wrong on address, card, and OTP fields
`hidden` attribute	`display: none`, but CSS wins	`hidden` plus any `display` rule renders the element visible
`aria-hidden="true"`	Removed from the accessibility tree only	Still focusable and still in the tab order — a focus trap for keyboard users
`<a target="_blank">`	Implicit `noopener` in current browsers	Older webviews and embedded browsers still leak `window.opener`; keep `rel="noopener"`
`<iframe>` with no `sandbox`	Full capabilities of its own origin	Scripts, forms, popups, top-level navigation all allowed
`<input type="number">`	Spinner, locale-dependent parsing, silent value drop on non-numeric	Use `inputmode="numeric"` + `pattern` for codes, phone numbers, and card fields
Missing doctype	Quirks mode	Legacy box model and dozens of divergences (`parsing.md`)

Element Defaults

One default per need, with the escape hatch and its price. Full patterns and keyboard contracts: interactive.md.

Need	Default	Switch when
Modal	`<dialog>` + `showModal()`	Never for a true modal — it is the only element that gets the top layer and the inert backdrop for free
Transient popup, menu, tooltip	Popover attribute API	You need a focus trap (→ dialog) or must support pre-2024 browsers (→ ARIA pattern)
Accordion, disclosure, "read more"	`<details>` + `<summary>`	You need the panel to remain in the DOM while animating height precisely, or a single-open group with roving focus
Tabs	No native element — ARIA tabs pattern	—
Autocomplete over a short fixed list	`<input list>` + `<datalist>`	You need custom rendering, async results, or multi-select (→ combobox pattern, ~200 lines of JS)
Icon	Inline `<svg aria-hidden="true">` beside text	The icon is the control — then it needs an accessible name (Rule 4)
Progress and gauges	`<progress>`, `<meter>`	—
Date, time, color, range	Native input types	The locale or range rules cannot be expressed natively — accept the full a11y contract of a custom widget
On/off switch	`<input type="checkbox">` + `role="switch"`	Never the `switch` attribute alone — it is not portable yet
Status message	`aria-live="polite"` region present in the DOM at load	The message interrupts a task (→ `assertive`); a region injected at message time announces nothing
Sortable data grid	`<table>` + `aria-sort`	Editable cells or virtualized rows (→ grid pattern)
Anything else	The element whose name matches the meaning; `<div>` only when nothing does	—

Output Gates

Before emitting markup, a review, or a fix:

Does every interactive element have an accessible name, and is every one reachable and operable by keyboard alone?
Does every image carry the right alt for its job, and every <img>/<video>/<iframe> a width and height (Rules 3, 5)?
Does every form control have a name and a real label, and is every id in the fragment unique (Rules 2, 4)?
Is the heading order a tree with no skipped level, and does each landmark appear where a screen-reader user would look for it?
Would this parse the way it reads — no block inside <p>, nothing loose inside a table, every element inside a valid parent (Rule 9)?
Is any content in this markup untrusted, and if so is it escaped for its exact context or run through an allowlist sanitizer (Rule 8)?
Does anything user-facing depend on JS that has not shipped yet — a control that is inert until hydration, a link that is a div?
Did anything durable come out of this — a page or template mapped, a rendering quirk, an audit result, a canonical host, a pattern that finally worked? Then it is written to its box in memory-template.md, with its ## Boxes line, in this same turn.

Configuration

User-dependent variables. Defaults apply until the user states a preference; store them in ~/Clawic/data/html/config.yaml.

Variable	Type	Default	Effect
markup_flavor	html \| jsx \| vue \| svelte \| jinja \| erb \| handlebars	html	Syntax of every emitted snippet: attribute casing, self-closing form, boolean attributes, and which escaping helper is named in `security.md`
browser_support	evergreen \| widely-available \| legacy	widely-available	Gates what ships bare: `evergreen` allows popover and declarative shadow DOM unqualified; `widely-available` pairs them with a fallback; `legacy` blocks them and adds the pre-2020 equivalents (`interactive.md`)
a11y_target	wcag-a \| wcag-aa \| wcag-aaa	wcag-aa	Which row of the conformance table gates output in `accessibility.md` and `auditing.md`: AA = 4.5:1 body text and 24×24 CSS px targets; AAA = 7:1 and 44×44
document_lang	text (BCP-47)	en	The `lang` on every generated `<html>`, the assumed direction, and the default `hreflang` self-reference (`internationalization.md`)
structured_data	none \| json-ld \| microdata	json-ld	Format and placement of schema markup emitted by `head.md`
inline_code_policy	allowed \| nonce \| forbidden	allowed	Whether emitted markup may carry inline `<script>`, `<style>` and `on*` handlers, ships them with a `nonce` placeholder, or moves them to external files (`security.md`)
untrusted_html	escape \| sanitize \| trusted-types	escape	The default treatment of user-supplied markup and which pipeline `security.md` recommends
email_client_floor	modern \| outlook-desktop	outlook-desktop	Whether `email.md` emits table layout, VML and inline styles, or allows a single-column modern build
output_shape	fragment \| full-document	fragment	Whether an answer returns the changed elements in context or a complete document

Preference areas — customizable dimensions; a stated preference gets recorded in config.yaml and applied from then on:

Tooling — formatter and linter (Prettier, html-validate, axe in CI), CMS or template engine, component library, which validator is authoritative — affects the shape of every example and the gates in auditing.md
Conventions — attribute order and quoting, self-closing style on void elements, data-* naming, id and class conventions, comment density, one-file-per-component vs page templates — affects emitted markup
Platform — target surfaces (web app, marketing site, email, print, embedded webview), device mix, whether RTL or CJK is in scope, minimum screen and pointer type — affects media.md, email.md, internationalization.md
Safety posture — how loudly to flag accessibility regressions, whether third-party embeds and inline analytics may be emitted at all, appetite for dangerously-style raw HTML injection — affects Output Gates and security.md
Integrations — analytics, consent management, icon and font providers, image CDN, the ESP an email will be sent through — affects head.md, performance.md, email.md
Constraints — banned elements or embeds, a strict CSP regime, a no-JS requirement, legacy pages that must keep working, brand rules on titles and social images — affects what may be proposed at all
Output register — diff vs whole file, how much of the rationale ships with the fix, whether alternatives are shown before the recommendation
Cadence — accessibility re-audit, validation sweep, email client re-test, third-party embed review — every accepted cadence becomes a row in the ## Due table of memory.md

Traps

Trap	Why it fails	Do instead
`<div onclick>` as a button	No keyboard, no focus, no role, no disabled state, no form submission	`<button type="button">`; style it flat (Rule 1)
`aria-label` on a `<div>` or `<span>`	Names are only exposed on elements with a role that supports naming — on a bare `div` it is ignored	Give it a role that takes a name, or use the right element
Fixing an ARIA warning by adding more ARIA	Redundant or conflicting roles override the native semantics that were already correct	Remove the role; `role="button"` on `<button>` is noise, `role="text"` erases children
Headings chosen by size	`h4` used for a section under an `h2` breaks the outline every screen-reader user navigates by	Level by depth, size by CSS (`semantics.md`)
`tabindex="1"` and above	Jumps that element ahead of the entire natural order, everywhere on the page	Only `0` and `-1` are ever correct (`accessibility.md`)
`<p>` used as a layout wrapper	Any block child closes it — you get two empty paragraphs and orphaned content	`<div>` for grouping, `<p>` for prose (Rule 9)
Nested `<a>` or `<button>` inside `<a>`	Illegal content model; the parser un-nests them and the click target becomes unpredictable	One interactive element per interactive element
`<br>` for spacing	Announced as line breaks and impossible to style responsively	Margin on block elements
Trusting `required` and `pattern`	Client validation is a UX affordance; anything can POST to the endpoint	Validate on the server; use the attributes for the keyboard and the error timing
`placeholder` used as the label	Vanishes on input, low contrast, and unreadable to anyone who tabs back	Visible `<label>` (Rule 4)
Lazy-loading the hero image	Defers the LCP element and defeats the preload scanner — measurably slower	`loading="eager"` and `fetchpriority="high"` on the LCP image (`performance.md`)
One `.ico` as the whole favicon set	Misses dark mode, high-DPI, and every mobile install surface	The three-file floor plus a manifest (`head.md`)
Blocklist sanitizing (`strip <script>`)	`<img onerror>`, `javascript:` URLs, SVG handlers, and mutation-XSS all survive it	Allowlist sanitizer, escaped by context (Rule 8)
`sandbox="allow-scripts allow-same-origin"` on same-origin content	The frame can reach into its own parent document and remove the sandbox attribute	Serve framed content from a distinct origin (`security.md`)
Copying the desktop page into an email	Flex, grid, `position` and external CSS are absent from the Word engine	Table layout, inline styles, 600px (`email.md`)
A markup decision that lives only in the chat	Re-litigated every quarter by whoever inherits the template	`artifacts/` with the date and what was rejected (`memory-template.md`)

Where Experts Disagree

How much ARIA is healthy. One school treats every ARIA attribute as debt to be justified; the other builds design-system components on ARIA patterns because the native elements do not compose. The frontier is ownership: if a component has tests and a maintainer, an ARIA pattern is fine; if it is one page written once, the native element wins because nothing will maintain the contract.
<section> vs <div>. <section> with no accessible name adds a region nobody can navigate to and clutters the landmark list; <section aria-labelledby> is genuinely useful. Default: <div> for grouping, <section> only when it has a heading you would want in the landmark list.
Web components in content sites. Encapsulation and portability against a hard cost: nothing renders until the definition loads, and forms, labels and CSS all need explicit bridges across the shadow boundary. Declarative shadow DOM narrows the gap but does not close it (templates.md).
Semantic markup and SEO. Search engines do not rank a <article> above a <div>, and claiming they do discredits the real argument: semantics buy assistive-tech behavior, browser features, and future parsers. Make the accessibility case; the metadata that genuinely affects search is in head.md.
Email builders vs hand-written email. Builders survive client quirks that a hand-written template rediscovers; hand-written wins on size, dark mode control, and not being clipped at 102 KB. The frontier is whether anyone will re-test on client updates (email.md).

Security & Privacy

Credentials: this skill reads and writes markup files. It does NOT store, log, copy, or transmit API keys, verification tokens, session values, or ESP credentials found in markup, and never writes one into ~/Clawic/data/.

Local storage: preferences, page and template notes, rendering quirks, audit results and generated artifacts stay in ~/Clawic/data/html/ on this machine, plus hostname rows in the shared ~/Clawic/data/domains/. URLs, element names and attribute names only — no secrets.

Guardrails: third-party embeds are named with the origin they contact and the capabilities they request before being proposed. Markup that renders user-supplied content is never emitted without its escaping or sanitizing step.

Related Skills

More Clawic skills, get them at https://clawic.com/skills/html (install if the user confirms):

css — layout, cascade, theming, and the visual half of everything here
javascript — DOM scripting, events, and the behavior an ARIA pattern promises
accessibility — audits, assistive-technology testing, and WCAG beyond the markup layer (planned)
seo — search strategy, indexing, and content that ranks
svg — inline vector graphics, viewBox, and icon systems

Feedback

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