Hamilton, Ontario · est. 2010
Harmonic Design is an internationally recognized web design and development agency in Hamilton, Ontario — building fast, secure WordPress sites and plugins that run on tens of thousands of sites worldwide.
Our products
Built and maintained by us, downloaded more than 300,000 times, and running on tens of thousands of WordPress sites.
Highest rated quiz builder
The easiest way to create fun quizzes and embed them onto any page of your WordPress site. Used by businesses, universities, and governments.
See HD QuizUltimate eCommerce solution
A complete solution designed to make managing your products easy and intuitive — a full eCommerce platform we build and maintain ourselves.
See HDCommerceCreate & manage invoices
The best way to create and manage invoices, with online payments, robust logs, and even recurring invoices.
See HDInvoiceRecent work
Sites for companies around the world, big and small — every one fast, secure, intuitive, and built to turn visitors into customers.
Who we are
Harmonic Design was started by Dylan Forde in Hamilton, Ontario in 2010. We design and build websites for companies around the world — big and small — and every one is built to the same standard: fast, secure, intuitive, and designed to turn visitors into customers.
Our WordPress products have been downloaded more than 300,000 times and run on tens of thousands of sites worldwide. Most of our client work arrives by referral — we'd like to keep it that way.
Updates, security patches, and performance tuning are what keep a site fast and safe for years — and that's exactly the part most owners don't want to think about. Our Care Plan handles it: we maintain the site, you run the business.
See Care PlansThemes, plugins, maintenance
Unlike agencies that rely on bloated page builders and off-the-shelf themes, our work is grounded in clean PHP, modern JavaScript, and WordPress core best practices. Lean, scalable, and engineered to last.
Website speed is not a feature — it's a requirement. We build WordPress sites with performance baked in from day one, so they feel instant, score well in audits, and convert better because they don't get in the user's way.
Security is not an afterthought or a plugin checklist — it's part of the architecture. This proactive approach significantly reduces the risk of common WordPress vulnerabilities while keeping your site stable and easy to maintain.
Harmonic Design isn't just a WordPress user — we are WordPress plugin developers. We build and maintain production-grade plugins used by real businesses, which means we understand WordPress internals at a level most agencies never reach. When custom functionality is required, we extend WordPress properly — without hacks, shortcuts, or fragile dependencies.
As a Hamilton WordPress developer, we work with local businesses that need more than a template site. Whether you're launching a new brand, rebuilding for performance, or fixing a slow and unstable WordPress install, we focus on solutions that are technically sound and business-driven. If you care about speed, security, and long-term reliability, you're in the right place.
What we do
From a small enhancement to a full custom platform, you get code we'd ship under our own name. Because we do.
Custom themes built from scratch containing exactly what your site needs and nothing it doesn't. Custom post types, advanced filtering, responsive layouts, optimized image delivery: built in, not bolted on. Already have a theme? We overhaul existing templates too — and we'll tell you honestly which one you need.
Learn moreOur plugins run on tens of thousands of sites — HD Quiz alone powers quizzes for businesses, universities, and governments. If an off-the-shelf plugin can't do what you need, we build it against WordPress core APIs, so it survives updates instead of fighting them — HDCommerce is a complete eCommerce platform we built and maintain ourselves.
Learn moreA WordPress site left alone gets slower and more vulnerable every month. Updates, security hardening, malware removal, performance tuning, backups, and emergency support — handled. You run your business. We keep the site fast, secure, and online.
Learn about Care PlansFAQ
We build custom themes from scratch — no page builders, no bloated frameworks. Your theme contains exactly what your site needs and nothing it doesn’t, which is why our builds stay fast under real traffic and easy to maintain years later.
Custom post types, advanced filtering, responsive layouts, optimized image delivery: built in, not bolted on. Already have a theme? We also overhaul existing templates when a rebuild isn’t warranted — and we’ll tell you honestly which one you need.
Our plugins run on tens of thousands of sites. HD Quiz alone powers quizzes for businesses, universities, and governments, and HDCommerce is a complete eCommerce platform we built and maintain ourselves.
If an off-the-shelf plugin can’t do what you need, we build it — against WordPress core APIs, so it survives updates instead of fighting them. From a small enhancement to a full custom platform, you get code we’d ship under our own name. Because we do.
A WordPress site left alone gets slower and more vulnerable every month. Our Care Plan is the fix: core, theme, and plugin updates; security scanning and hardening; malware removal; performance tuning and caching; routine backups; and emergency support when something breaks at the worst possible time.
You run your business. We keep the site fast, secure, and online.
It depends on scope — a five-page brochure site and a custom eCommerce build are different animals. Tell us what you need and you’ll get a fixed quote, not an estimate that grows. No retainer required, no pressure.
Most sites launch in 4–8 weeks from kickoff, depending on scope and how quickly content and feedback come back to us. You’ll get a real schedule with your quote — and we hit it, because we control the whole stack.
Yes — a large part of our work is rescuing sites other people built. Slow, hacked, abandoned by the original developer, or held together with seventeen plugins: we audit what’s there, tell you plainly what’s worth keeping, and fix the rest. Most takeovers move onto a Care Plan so it never gets that bad again.
Everyone deserves an inclusive online experience. We build to meet or exceed WCAG guidelines as part of the process — semantic markup, keyboard navigation, and readable contrast aren’t an add-on we quote separately.
And we don’t care if you’re on the latest device with gigabit fibre or some terrible satellite service out in the tundra — we build things fast and lightweight so everyone has a great experience.
Yes! Proudly Canadian owned and operated, working with clients globally. And if you’ve read this far down the accordion, you deserve the truth: this one exists mostly for the search engines. The others are more useful, we promise.
Get in touch
Tell us what you need.
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