WordPress developers · Surry Hills, Sydney
WordPress, built lean: custom blocks, few plugins, no page-builder bloat
WordPress is easy to start with and easy to break with the wrong plugins. Tonic is a full service independent agency in Sydney offering WordPress design and development, including ActronAir’s customer-first website. Our senior developers and designers build custom themes, blocks and integrations, then stay on to support, patch and improve what they ship. No bloated page builders, no plugin roulette.
- WordPress websites for O’Brien, ActronAir and OsteVit-D, designed and built in-house
- Custom blocks and content models your editors can use without raising a ticket
- Migrations, integrations, and SLA-backed support and maintenance
Prefer to talk? Call 1300 974 864
WordPress websites built for the teams who run them
O’Brien (WordPress)
A redesigned O’Brien website on WordPress, built on a component-based design system so the team can showcase electrical, plumbing and glazing services without waiting on a developer.
Read the case study: O’Brien (WordPress) →
ActronAir (WordPress)
A customer-first WordPress website for ActronAir, integrated with Microsoft Dynamics 365. Result: engagement up 20% and digital lead conversions up 15%.
Read the case study: ActronAir (WordPress) →
OsteVit-D (WordPress)
A rebuilt WordPress website for the Australian bone health brand, with products organised by calcium content and dosage, clearer product cards and a side-by-side comparison page.
Read the case study: OsteVit-D (WordPress) →
WordPress services, from first build to the next update
Custom WordPress builds
Custom themes and Gutenberg blocks built for your content and brand, not an off-the-shelf theme with forty plugins.
Content modelling and editor experience
Custom post types, fields and reusable blocks, so editors build pages quickly and stay on-brand.
Migrations and rebuilds
Move from another CMS or an old WordPress build, with URL mapping, redirects and SEO checks so rankings survive.
Integrations and APIs
Connect WordPress to CRM, marketing automation, search and internal systems, like Salesforce and HubSpot.
Headless WordPress
WordPress as the CMS with a Next.js or React front end, for speed and multi-channel content.
Performance and SEO
Fast hosting, caching, Core Web Vitals and technical SEO foundations built in from the start.
Security and maintenance
Core, theme and plugin updates, security hardening, backups and uptime monitoring.
Accessibility and QA
WCAG 2.2 AA builds, cross-browser testing and automated checks before every release.
Support and SLAs
SLA-backed support and a roadmap of improvements from the team that built the site.
Industries we do this for:Healthcare →Consumer electronics →
Related services:Web development →UI and UX design →
Research
What the research says about WordPress
39.5%
of all websites run on WordPress, and 58.2% of sites with a known content management system.
Source: W3Techs, October 20262.5×
higher ecommerce conversion rate for sites that load in 1 second than for sites that load in 5.
Source: Portent, site speed and conversion research, 202219.7%
of WordPress sites run WooCommerce for ecommerce.
Source: W3Techs, October 2026
WordPress is the safe, well-supported choice. What sets a good build apart is what sits on top of it: lean themes, custom blocks and fewer plugins.
Why marketing teams choose our WordPress developers
Connected to your CRM
ActronAir’s WordPress site sends enquiries and quote requests straight into Microsoft Dynamics 365.
Lean builds, fewer plugins
Custom blocks and clean code instead of heavy page builders, so the site stays fast and easy to update.
Copy and SEO built in
For ActronAir we wrote the copy and built in SEO, and engagement rose 20% within six months.
Updates without breakages
Core, theme and plugin updates are tested on staging before they go live, so the site stays secure and stable.
How a WordPress project runs
Discovery (weeks 1–2)
Review your content, editors, integrations and current site, and agree what success looks like.
Content model and design (weeks 2–5)
Sitemap, content model, UX and UI design, with a fixed scope and timeline.
Build in sprints
Custom theme and blocks, with fortnightly demos on staging.
Migrate, test and launch
Content migration, redirects, accessibility and performance testing, editor training and a planned go-live.
Support and improve
Updates, monitoring and a roadmap of improvements.
Plugins out of date and pages slowing down? Get a WordPress health check before it becomes urgent.
Request a health checkWordPress development FAQs
Is WordPress the right CMS for us?
For most marketing-led websites, yes: it’s flexible, widely supported and easy for editors. If you need structured multi-channel content or enterprise governance, we’ll tell you whether a headless or enterprise CMS fits better.
Do you use page builders or custom themes?
Custom themes and blocks. They load faster, are more secure and are easier for editors than page builders, which add code and plugins your site doesn’t need. Editors still get flexible, reusable blocks for building pages without a developer.
Can you migrate our site to WordPress?
Yes. We migrate content, media and SEO settings, set up redirects from old URLs and test everything before launch, so rankings and traffic carry over. We can migrate from other CMSs, older WordPress builds or hand-coded sites.
Can you take over a WordPress site another agency built?
Yes. We audit the theme, plugins and hosting, fix urgent security and performance issues, then take over support and improvements. You get a clear report on what we found, so you know the state of the site before we start.
Do you build headless WordPress sites?
Yes. We use WordPress as a headless CMS with React or Next.js front ends where speed or multi-channel delivery matters.
Where do you host WordPress sites?
We recommend managed WordPress hosting that suits your traffic, security and budget, or work with your existing host. Good hosting includes regular backups, security monitoring and fast performance, and we make sure it’s set up properly before launch.
How long does a WordPress website take?
It depends on the size of the site, the amount of content and the integrations involved. A smaller marketing site takes less time than a large site with custom functionality and migration. We set a timeline after discovery and phase larger projects so key pages launch sooner.
What does a WordPress website cost?
Cost depends on the number of page templates, custom blocks and functionality, content migration and integrations such as your CRM, booking or ecommerce. A brochure site costs far less than a WooCommerce store or a site with complex integrations. You get a fixed scope after discovery, with real-time scope reporting during the build.
Do you offer WordPress support and maintenance?
Yes. We support WordPress sites under SLAs, covering core and plugin updates, security patching, backups, monitoring and ongoing improvements. Regular updates matter, because most WordPress vulnerabilities are found in plugins.
Tell us about your website
Tell us what the site needs to do, who edits it and when it needs to be live.