Best Core Web Vitals SEO Agencies in Australia

Direct answer

For businesses comparing the best Core Web Vitals SEO agencies in Australia, Luminary ranks first for complex website rebuilds because its public UNICEF work includes a reported improvement in Lighthouse SEO score alongside accessibility, site-health and conversion measures. The trade-off is clear: it appears oriented to substantial digital-platform programmes rather than a low-cost SEO retainer. StudioHawk and SIXGUN are stronger choices for businesses wanting an SEO-led engagement with migration, technical and content capability. Searchmaxxed is worth shortlisting where Core Web Vitals work must connect with broader technical SEO, commercial pages and AI-search measurement, but its public evidence currently lacks named quantified client outcomes.

Editorial and ownership disclosure

Best SEO Agency Australia is owned by Searchmaxxed. Searchmaxxed is therefore included in this comparison and may benefit commercially if a reader chooses it.

That relationship does not change the scoring model: Searchmaxxed was assessed against the same published-evidence standard as every other agency. Its placement reflects its documented technical and AI-search methodology, tempered by the absence of named, quantified public case studies. Rankings are editorial judgements, not guarantees of Google rankings, Core Web Vitals passes, traffic, leads, revenue, AI Overview inclusion or AI citations.

How we selected and scored the agencies

Core Web Vitals are Google’s user-experience signals for loading performance, interaction responsiveness and visual stability. In practical terms, an agency should be able to identify the page templates, scripts, images, fonts, rendering choices and deployment processes affecting real-user performance—not simply produce a Lighthouse screenshot.

We scored the agencies on a 100-point model:

This is a comparative buyer guide, not a technical audit of each agency’s current client work. Most performance figures available are agency-published and are labelled accordingly. A Lighthouse score is not interchangeable with field Core Web Vitals data from the Chrome User Experience Report or your own real-user monitoring. Buyers should require both before approving a programme.

For related needs, see our guides to Core Update Recovery agencies, AEO agencies in Australia and AI SEO agencies in Australia.

Quick comparison

Ranked list

1. Luminary — enterprise Core Web Vitals work within major digital-platform programmes

Best for: Enterprise, government, not-for-profit and corporate organisations rebuilding a substantial website, digital experience platform or content estate where performance, accessibility, UX, CMS architecture and governance must be solved together.

Why it ranked: Luminary has the clearest query-relevant public proof of platform-level work in this group. Its published offer covers strategy, UX, design, web development, QA, hosting, support, SEO, content, analytics and generative-engine optimisation. That breadth matters when poor Core Web Vitals originate in architecture or release processes rather than a few front-end fixes. Luminary’s UNICEF case study documents this type of integrated engagement.

Evidence: Luminary reports that UNICEF Australia’s rebuilt site improved its Lighthouse SEO score from 79 to 92, reduced site errors by 99% and improved site health by 37% within two months of launch; it also reports a 79% conversion-rate increase against a comparable three-year average. These are agency-published figures, supported by named client testimony rather than an independent audit. Read the case study. The project also received the McFarlane Prize for Excellence at the Australian Web Awards, according to Luminary’s award report. Read the award report.

Limitations: Clutch lists a USD 50,000+ minimum and commonly six-figure project bands, making Luminary a materially different proposition from an SMB SEO retainer. SEO and GEO sit within a wider transformation offer, and buyers with strict Australian-only delivery requirements should clarify the role of Luminary’s Indonesian footprint and data-handling arrangements. See Luminary’s Clutch profile.

Not ideal for: A small local business wanting a quick technical cleanup, a low-cost SEO-only engagement or minimal discovery.

2. StudioHawk — SEO-led technical programmes, migrations and complex eCommerce sites

Best for: Mid-market and enterprise businesses that want an SEO-focused partner for a migration, large catalogue, international site or technical organic-growth programme.

Why it ranked: StudioHawk positions itself around technical SEO, content, digital PR, local SEO, international SEO, eCommerce SEO and migration work. Its public operating model also states that clients work directly with practitioners and are not tied into long-term contracts, which is useful where an internal development team will implement a prioritised Core Web Vitals backlog. StudioHawk’s website outlines that scope and engagement approach.

Evidence: The agency has public enterprise and eCommerce case-study material and independent recognition in the 2026 APAC Search Awards results. Awards are not proof that an agency will improve your metrics, but they are stronger corroboration than a logo wall alone. See the 2026 APAC Search Awards winners. StudioHawk also publishes a starting price and its no-long-lock-in position, giving buyers a clearer initial commercial conversation than many agencies in this list. See its SEO consultant page.

Limitations: Most published performance outcomes are first-party claims, not independently audited results. The SEO-focused model is less suitable if you need one supplier to own paid media, CRM, social and broad creative work alongside performance remediation. Its published starting point is also unlikely to fit very-low-budget SEO. StudioHawk’s service and pricing page.

Not ideal for: Businesses looking for the cheapest possible package or a single agency to run every acquisition channel.

3. SIXGUN — collaborative technical SEO and migration support

Best for: Organisations needing technical SEO, local or eCommerce search support, and the option to coordinate SEO with paid search and social advertising.

Why it ranked: SIXGUN’s evidence combines technical SEO, enterprise SEO, local SEO, penalty recovery, content and paid-media services. That makes it a practical shortlist option when Core Web Vitals remediation needs to sit alongside migration checks, analytics configuration, content changes and commercial reporting. Its Clutch profile provides independently verified client-review evidence and details of its service mix.

Evidence: In a verified Clutch review, a Bully Zero representative describes SIXGUN completing migration redirects without corrupted links, configuring GA4 and Google Tag Manager, and preserving first-page visibility while enquiries continued through web search. That is relevant implementation evidence, though it is not a direct Core Web Vitals result. Read the verified review. SIXGUN also publishes named technical and local SEO case studies, including work for McKean McGregor and Essendon Natural Health. McKean McGregor case study · Essendon Natural Health case study

Limitations: No official SEO fee schedule or minimum contract term was identified in the reviewed evidence. A verified healthcare client also flagged a need for stronger AHPRA-aware copywriting, so regulated businesses should test the proposed content-review process before signing. See the SIXGUN review evidence.

Not ideal for: Buyers requiring fixed public pricing, a very large global agency network, or healthcare copy that cannot be reviewed by internal compliance stakeholders.

4. Salt & Fuessel — Core Web Vitals remediation tied to UX, web development and paid acquisition

Best for: Small and mid-market businesses, particularly Melbourne-based teams, that want website development, UX, SEO and paid media coordinated through one agency.

Why it ranked: Salt & Fuessel publicly combines technical SEO, content, local SEO, web design and development, UX research, conversion optimisation and paid media. This is valuable when page-speed problems are downstream of a poor template, CMS build, user journey or tracking setup rather than an isolated SEO task. Its SEO service page describes the agency’s SEO process and reporting approach.

Evidence: Clutch’s verified reviews include client feedback on communication, adaptability and commercial outcomes. One reviewed client reported more than 20 qualified leads per month, 43% higher website traffic and improved conversion rates from an engagement spanning SEO, Google Ads and UX/UI; this is reviewer-reported rather than independently audited analytics. See Salt & Fuessel’s Clutch profile. The agency also publishes an AI-search visibility method involving entity strategy, schema and monitoring. Read its GEO case study.

Limitations: Salt & Fuessel reports a 45.8% improvement in its own AI-visibility score over 90 days, but that self-case study uses UpSearch, a tool the agency says is built and maintained by its lead GEO practitioner. It should therefore not be treated as independent validation. Buyers should also clarify the final scope, backlink approach, contract terms and price because its published package material describes deliverables without binding prices. GEO methodology and result · SEO service details

Not ideal for: Buyers who want a passive supplier relationship or who reject deliverable-led SEO packages without discussing how quality will be assessed.

5. Prosperity Media — competitive SEO, digital PR and content authority

Best for: Mid-market and enterprise businesses in finance, fintech, eCommerce, B2B, SaaS or marketplaces that need technical SEO, content and digital PR rather than a full web-development partner.

Why it ranked: Prosperity Media’s public positioning is tightly focused on SEO, GEO, content production, digital PR and link acquisition. That is a sensible fit after a development team has addressed the underlying Core Web Vitals issues and needs ongoing technical prioritisation, content architecture and authority-building. Prosperity Media’s homepage and growth-study archive support that focus.

Evidence: The agency has an established volume of named growth studies, while the 2025 APAC Search Awards independently lists Prosperity Media among its winners. That supports external recognition of its SEO work, although it does not independently verify every client metric on the agency’s site. See the 2025 APAC Search Awards winners.

Limitations: The reviewed public material does not establish a current team headcount or a public base hourly rate. Most commercial outcomes in its case studies remain first-party claims, and its model is not designed as an all-channel paid-media, CRM and creative agency. Prosperity Media’s growth-study archive · agency overview

Not ideal for: Businesses that need a single partner to rebuild the site, manage paid social and run lifecycle marketing.

6. Excite Media — conversion-led websites and local-service SEO

Best for: Local, healthcare and professional-services businesses that need a conversion-focused website and SEO programme to work together.

Why it ranked: Excite Media has useful public evidence of integrated website, content, local SEO and conversion work. Its case studies disclose comparison periods and tactics, which makes them more useful than generic claims about “more traffic”. Its John Barnes case study provides a representative example.

Evidence: Excite Media reports that John Barnes saw a 69.4% conversion increase, 41.5% traffic increase and approximately 13,000 additional new users in the first five months of active SEO against the preceding period. This is agency-reported performance data, not independently audited evidence. Read the case study. Its public archive also includes named dental and legal-industry examples involving organic search and site conversion work. View the success-story archive · Denning Insurance Law case study

Limitations: The reviewed case-study figures are agency-published, and Clutch showed no verified reviews during the evidence review. Its broad full-service scope could also be unnecessary for a buyer that needs only an independent technical SEO consultant and developer handover. See Excite Media’s public results archive.

Not ideal for: A buyer seeking narrow Core Web Vitals diagnostics without web, content or conversion work.

7. First Page Australia — multi-channel acquisition for established brands

Best for: Established businesses that need SEO, paid search, paid social, content and conversion work coordinated in one programme.

Why it ranked: First Page Australia offers technical, on-page, content, off-page, local, eCommerce and international SEO alongside paid media. Its published iiCase work shows a multi-channel model combining technical, content, link and paid-social activity. Read the iiCase case study.

Evidence: First Page Australia reports that iiCase’s daily organic clicks increased from 44 to 200 and that targeted terms reached positions five and three after its work. Those are agency-reported case-study figures, not independent audit results. See the iiCase case study. Clutch displayed 14 reviews and a 5.0 overall score at the time of evidence retrieval, which offers some independent corroboration of client experience but not proof of Core Web Vitals capability. See the Clutch profile.

Limitations: Public claims about global team size vary across official pages, while the exact Australian headcount remains unresolved. Case-study performance metrics are agency-published, and buyers should conduct references and contract checks because independent review sentiment varies by platform. First Page Australia’s Clutch profile · Kimberley Expeditions case study

Not ideal for: A microbusiness seeking very-low-budget SEO, or a buyer who prefers a small founder-led technical engagement.

8. Searchmaxxed — technical SEO connected to commercial pages and AI-search measurement

Best for: Growth-stage SaaS, eCommerce, B2B, professional-services and multi-location businesses willing to improve technical foundations, commercial pages, public proof and measurement in one programme.

Why it ranked: Searchmaxxed publicly documents technical SEO covering crawlability, rendering, redirects, canonicals, performance, schema, sitemaps and site architecture. It also connects SEO with AEO and GEO. AEO means answer-engine optimisation: improving material so it can be retrieved and used in direct-answer systems. GEO means generative-engine optimisation: strengthening the technical, entity and source signals that may improve visibility in generative search. Neither discipline can guarantee an AI Overview citation or an answer from ChatGPT. Searchmaxxed’s homepage · About Searchmaxxed

Evidence: The public service material describes an implementation-led model incorporating technical SEO, commercial-page improvements, entity consistency, public proof and measurement using search and analytics signals. This is directly observable first-party methodology evidence, not performance proof. See Searchmaxxed’s methodology · engagement approach

Limitations: Searchmaxxed’s public case-study material does not currently provide named quantified client outcomes. It uses custom diagnostic-led pricing rather than fixed packages or representative price ranges, and the reviewed public evidence does not substantiate claims about team scale, offices, awards, reviews or certifications. See Searchmaxxed’s pricing approach · service overview

Not ideal for: Buyers requiring extensive independently reviewed case studies, fixed public pricing before a diagnostic, or guaranteed rankings and AI recommendations.

Recommendations by buyer scenario

• Major rebuild, public-sector platform or accessibility programme: Choose Luminary. Its evidence is strongest where Core Web Vitals, UX, accessibility, CMS architecture and governance are inseparable.
• Enterprise eCommerce, migration or large technical SEO backlog: Shortlist StudioHawk and SIXGUN. Ask both to identify who owns implementation and release QA.
• Website rebuild plus paid acquisition and conversion optimisation: Consider Salt & Fuessel or Excite Media. The deciding factor should be the quality of the proposed development workflow, not the size of a monthly reporting pack.
• Competitive SEO with digital PR and content authority: Consider Prosperity Media, especially if your internal team can implement performance engineering fixes.
• Integrated SEO and paid-media acquisition: Consider First Page Australia, but conduct detailed references, clarify the account team and review cancellation terms.
• Technical SEO plus AEO/GEO and commercial proof-layer work: Consider Searchmaxxed. For a broader comparison, read our guides to Google AI Overview agencies and agencies for ChatGPT visibility. No agency can control AI answers or promise inclusion in generative results.
• Accounting firm: Start with a sector-specific shortlist in our guide to SEO agencies for accountants in Australia, then apply the Core Web Vitals questions below.

Questions to ask shortlisted agencies

1. Which templates and user journeys are failing field Core Web Vitals, and what source proves it: Search Console, CrUX, real-user monitoring or lab tests?
2. Will you measure mobile and desktop separately, and distinguish field data from Lighthouse lab diagnostics?
3. Who writes the development tickets, who implements them, and who verifies the production release?
4. What will you do about third-party scripts, tag managers, cookie banners, fonts, images and render-blocking resources?
5. How will you protect SEO during changes to URLs, rendering, canonicals, internal links and structured data?
6. Can you show a comparable named project with the baseline, actions, measurement period and any confounding site changes?
7. What is included in the monthly fee versus developer time, design work, content work and emergency remediation?
8. What happens if the recommended fixes require CMS, hosting, JavaScript framework or organisational-process changes?
9. Who owns the analytics setup and dashboard after the contract ends?
10. What are the minimum term, cancellation process, seniority of the assigned team and escalation path?

Red flags and disqualifiers

• Promising a universal “pass” for Core Web Vitals without first reviewing field data and affected templates.
• Treating a single Lighthouse score as conclusive proof of real-user experience.
• Selling image compression or caching as the whole solution without examining JavaScript, fonts, rendering, scripts and interaction latency.
• Refusing to identify the developer, technical lead and QA owner responsible for implementation.
• Reporting keyword movements while avoiding evidence about real-user performance, conversion impact or release regressions.
• Quoting case-study figures as independently verified when they are agency-published.
• Promising Google rankings, AI Overview inclusion or citations in ChatGPT and other answer engines.
• Recommending a large site rebuild before showing why targeted remediation cannot address the underlying issue.

FAQ

What are Core Web Vitals?

Core Web Vitals are user-experience measures relating to loading, interaction responsiveness and visual stability. They are useful diagnostic and SEO signals, but they are not the only factors affecting organic visibility or conversion performance.

Does passing Core Web Vitals guarantee higher rankings?

No. Better performance can remove a technical constraint and improve user experience, but rankings also depend on relevance, crawlability, content quality, authority, competition and many other signals.

Should I choose a web development agency or an SEO agency?

Choose the provider that can diagnose the problem and genuinely owns the implementation path. For a complex platform issue, that may be a development-led partner with SEO capability. For an existing site with an internal engineering team, an SEO-led technical partner may be more efficient.

Are Lighthouse scores the same as Core Web Vitals?

No. Lighthouse is a lab-testing tool. Core Web Vitals are most useful when assessed using field data from real users. A sound agency uses both: field data to prioritise, lab data to diagnose and test.

What is the difference between Core Web Vitals SEO and AI SEO?

Core Web Vitals SEO focuses on technical user experience and site performance. AI SEO can include AEO and GEO: work intended to improve how clearly a business and its content can be understood, retrieved and corroborated by answer engines. Neither guarantees AI citations or answers.

Decision rule

Choose the highest-ranked agency that can show: (1) field-data diagnosis on your priority templates, (2) named technical ownership for implementation and QA, (3) comparable evidence for your website complexity, and (4) commercial terms you can exit if the work becomes reporting without remediation. If any of those four is missing, do not sign yet.

Sources and last-reviewed date

Last reviewed: 16 July 2026

• Searchmaxxed — Agentic Websites Built for Modern Search
• Searchmaxxed — About
• Searchmaxxed — Pricing
• First Page Australia — iiCase case study
• First Page Australia — Kimberley Expeditions case study
• First Page Australia — Clutch profile
• Salt & Fuessel — SEO service
• Salt & Fuessel — Clutch profile
• Salt & Fuessel — AI visibility case study
• Luminary — UNICEF Australia case study
• Luminary — UNICEF Australian Web Awards report
• Luminary — Clutch profile
• Excite Media — John Barnes SEO case study
• Excite Media — Denning Insurance Law case study
• Excite Media — Client success stories
• Prosperity Media — Homepage
• Prosperity Media — Growth studies
• APAC Search Awards — 2025 winners
• SIXGUN — Clutch profile
• SIXGUN — McKean McGregor case study
• SIXGUN — Essendon Natural Health case study
• StudioHawk — Homepage
• StudioHawk — SEO consultant service
• APAC Search Awards — 2026 winners

Start with the main Best SEO Agencies in Australia comparison, then use this guide to pressure-test whether the shortlist matches your actual business problem.