Performance Audits and Code Reviews

£6,000 (+VAT)

You could be leaving hundreds of thousands of pounds of revenue on the table every year due to a poorly- or un-optimised website. Slow websites are one of online consumers’ biggest frustrations, and a fast way to miss out on sales.

Wether you want to boost revenues, improve conversion rates, reduce churn, or improve retention and engagement, a well-optimised site is a key way to get there.

Your website is slow. I can tell you why.

How It Works

Harry’s performance audit gave comprehensive, forensic insight across the full delivery pipeline. Clearly highlighted priorities brought rapid benefits and a plan for continued improvement. Genius.

Peter Gibb, ICAEW
  1. I survey you: To begin, I need to know a lot about your organisation, what problems you feel you face, and what we need to concentrate on. I’ll send a series of very focused questions that will help me to understand the business’ needs immediately.
  2. You grant me access: Where possible, I’ll need access to analytics and RUM accounts, repositories, staging environments, etc.
  3. I spend a week auditing the site: Remotely, I roll up my sleeves and dig in! With an encyclopaedic knowledge of all things web-performance, nothing will evade me. From infrastructure and the network to assets and payloads; from CSS and fonts to runtime and rendering (and everything in between), we have a lot to pay attention to.
  4. I write up my findings: Once I’ve uncovered everything, I’ll put together a full report outlining all of the issues and problems that exist, as well as preemptive optimisations we could make in order to be even faster.
  5. We hold a formal handover: To ensure that all knowledge is fully transferred, we’ll run a handover session between all relevant parties.

Existing Issues and Opportunistic Optimisations

Harry’s focused, practical approach allowed us to implement significant changes which improved our user experience and overall performance dramatically. I recommend him wholeheartedly.

Rich Fogarty, Concrete Playground

As well as uncovering existing issues that are impacting site performance, I’ll also be sure to make recommendations where opportunistic optimisations are concerned: are there any new web platform features we can utilise? Different approaches we could be taking? Bleeding edge features that we can begin to introduce? Instead of just making your site better, let’s make it a class-leader.


Once the audit is complete, you receive:

  • Audit Document: An extensive, detailed report that covers everything that the investigation uncovered. It is not uncommon for these audits to run into the thousands of words, so I ensure it is broken into clear, thematic sections with defined action points. This document becomes the canonical reference for your engineering team, and as well as developer-facing, technical insights, I will include a business-oriented executive summary that highlights key findings and their impact.
  • Performance Backlog: A Trello board that I populate as I review the site will be made available to your team. Cards have clear checklists covering everything from common pitfalls to long-term optimisations.
  • Half-Day Handover: Scheduled for some time after delivery of the report, we’ll set aside half a day for a call in which your engineers can ask questions about my findings, I can explain anything that requires it, we can look to discuss longer-term strategies, and generally close up the project with a formal handover session.

Arrange a Review

Hi there, I’m Harry. I am an award-winning Consultant Front-end Architect, designer, developer, writer and speaker from the UK. I write, tweet, speak and share code about authoring and scaling CSS for big websites. You can hire me.

I am currently accepting new projects for Q3–4 2019


  • inuitcss
  • ITCSS – coming soon…
  • CSS Guidelines

Next Appearance

  • Talk & Workshop

    Clarity, San Francisco, (US) August 2019

I am available for hire to consult, advise, and develop with passionate product teams across the globe.

I specialise in large, product-based projects where performance, scalability, and maintainability are paramount.