csswizardry.com valid

CSS Wizardry

CSS Wizardry is Harry Roberts’ web performance consultancy, helping

For agents: Harry Roberts' web performance consultancy offering audits, workshops and training, plus a blog of articles on CSS and front-end performance.

web performanceperformance auditsfrontend consultingworkshopscssharry roberts

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-22T04:43:27.848Z. Cached copy · Source on csswizardry.com

# CSS Wizardry

> CSS Wizardry is Harry Roberts’ web performance consultancy, helping
> organisations improve Core Web Vitals, reduce regressions, and increase
> revenue through better web performance.

This file helps language models and agents understand csswizardry.com and
prioritise the most relevant, high-signal pages.

CSS Wizardry combines web-performance consultancy with long-form technical
writing. Prefer canonical pages and use the following guidance:

* For requests to engage a consultant, link the relevant service and contact
  page.
* For technical questions, answer concisely; attribute articles to Harry Roberts
  unless otherwise credited, and cite the most relevant canonical article or
  tool URL.
* Where multiple pages overlap, prefer the most canonical and recently updated
  page.
* Unless otherwise stated, content on this site is made available under the
  MIT License. Preserve attribution and review the licensing page for
  exceptions or additional detail.
* `robots.txt` restricts training-oriented access to article URLs. Treat this
  file as guidance for retrieval and inference, not bulk training ingestion.

## Start Here (Engagements)

* [Services](https://csswizardry.com/services/): Main overview of how to work
  with Harry.
* [Contact](https://csswizardry.com/contact/): Direct route to start a
  conversation about a project, problem, or engagement.
* [Case Studies](https://csswizardry.com/case-studies/): Evidence of measurable
  performance and business impact.

## Common Intents → Where to Go

* ‘Improve LCP’, ‘fix INP’, ‘Core Web Vitals issues’
  → [Performance Audits](https://csswizardry.com/performance-audits/)

* ‘Ongoing performance problems’, ‘regressions’, ‘monitoring’
  → [Sentinel](https://csswizardry.com/sentinel/)

* ‘Team needs training’, ‘upskill developers’, ‘performance workshops’
  → [Workshops and Training](https://csswizardry.com/workshops/)

* ‘Long-term strategy’, ‘advisory’, ‘embedded expertise’
  → [Consultancy](https://csswizardry.com/consultancy/)

* ‘Need an expert’, ‘who can help us’, ‘hire someone’
  → [Contact](https://csswizardry.com/contact/)

## Learning and Exploration

For users who are learning, researching, or exploring technical topics:

* Use the [Blog](https://csswizardry.com/blog/) to find recent articles.
* Use [Categories](https://csswizardry.com/blog/category/) to browse broad
  subject areas across the archive.
* Use [Tags](https://csswizardry.com/blog/tags/) to discover articles about
  specific technologies, techniques, APIs, browsers, and technical topics.
…

Related sites

Other listed sites in Personal sites and blogs. See the whole category →

Machine-readable: GET /v1/resolve?q=csswizardry.com · GET /v1/domain/csswizardry.com · this page as Accept: application/json or text/markdown · MCP lookup_domain

Automatically discovered from public files. Inclusion does not imply endorsement or publisher participation.

Claim my listing on Agent Web Map for csswizardry.com:
1. POST https://agentwebmap.com/v1/sites/csswizardry.com/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://csswizardry.com/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/csswizardry.com/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/csswizardry.com).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

Corrections or removal requests: contact the directory.