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Instapage vs Unbounce vs a Custom Build: Where Should Your Landing Pages Live?

Campaign pages have different needs from your main website: speed to launch, easy testing and tight links to ads. Here is how the main options compare.

A laptop displaying marketing analytics charts
Photo by path digital on Unsplash

Key takeaways

  • The median landing page converts at 6.6% across industries, according to Unbounce's analysis of 41,000 pages, but results vary widely.
  • Dedicated platforms like Instapage and Unbounce win on speed to launch, testing and ad alignment.
  • Building landing pages in your main CMS keeps everything in one place and can be better for SEO and data.
  • Custom builds make sense for high-traffic, performance-critical or highly personalised programmes.

Your main website and your campaign landing pages have different jobs. The website explains who you are to everyone. A landing page has one job, for one audience, from one traffic source: get the click to convert.

That difference is why so many teams run landing pages on a separate platform. It is also why the choice is not as obvious as it looks.

A benchmark to keep in mind

Unbounce analysed over 41,000 landing pages and 464 million visits and found a median conversion rate of 6.6% across industries (Unbounce). Treat that as a rough reference point, not a target. Industry, offer and traffic source move the number dramatically.

Option 1: A dedicated landing page platform

Instapage and Unbounce are the two names we are asked about most.

Why teams choose them

  • Speed to launch. Marketers can build and publish without developers.
  • Testing built in. A/B testing and variants are part of the workflow.
  • Ad alignment. Features like dynamic text replacement help match page copy to ad keywords.
  • Campaign focus. No navigation, no distractions, one goal.

How they differ, broadly

  • Unbounce is popular with performance marketers and agencies for fast building and testing, and includes AI-assisted features for routing visitors to the best-performing variant.
  • Instapage leans toward larger teams running paid media at scale, with strong collaboration and personalisation for different ad groups and audiences.

Both are capable. The better fit usually comes down to your team’s workflow, the volume of pages you run and how you manage paid media.

Trade-offs

  • Another subscription and another place for brand drift.
  • Pages usually are not designed to rank in organic search.
  • Data needs to be connected carefully to your CRM.

Option 2: Your main CMS

Building landing pages in HubSpot, WordPress or Webflow keeps everything in one system.

Why it works

  • Shared components keep pages on brand automatically.
  • Pages can rank in search and contribute to your domain.
  • Forms and tracking feed directly into your CRM, particularly on HubSpot.

Trade-offs

  • Testing and ad-alignment features may be less advanced.
  • Without good templates, marketers still depend on developers.

Option 3: A custom build

When it makes sense

  • High-traffic programmes where every millisecond counts.
  • Complex personalisation, calculators or product-led experiences.
  • Large-scale ABM programmes with dozens of account-specific pages.

Speed is worth taking seriously. The Google-commissioned “Milliseconds make millions” study associated a 0.1-second improvement in mobile load time with an 8.4% increase in retail conversions and lower bounce on lead generation pages (web.dev).

Where AI changes the equation

The biggest shift is personalisation at scale. Instead of one landing page per campaign, AI-assisted workflows can generate a tailored page for each target account or segment, drafting headlines, examples and proof points for people to review and approve.

McKinsey’s research found personalisation most often drives a 10–15% revenue lift (McKinsey). What used to be too labour-intensive for more than a handful of accounts is now practical for fifty or more. We describe that process in detail in personalized landing pages at scale.

How to choose

Priority Best fit
Launch and test paid campaigns quickly Instapage or Unbounce
Pages should rank, share components and feed the CRM Your main CMS
Performance-critical or highly personalised programmes Custom build
ABM with many account-specific pages Template-driven build with AI-assisted personalisation

The takeaway

The right home for your landing pages depends on how fast you need to move, how you measure success and how personal the experience needs to be. Many teams use more than one option, and that is fine, as long as the brand and the data stay consistent.

We build landing pages on Instapage, Unbounce, HubSpot, WordPress, Webflow and custom code. See our website and landing page development service.

Frequently asked questions

What is a good landing page conversion rate?

Unbounce's analysis of over 41,000 landing pages found a median conversion rate of 6.6% across industries. What counts as good depends heavily on your industry, offer and traffic source.

Should landing pages be on the main website or a separate platform?

Use a separate landing page platform when speed to launch and testing matter most. Use your main CMS when pages need to rank in search, share components with your site or feed data directly into your CRM.

Can landing pages be personalised automatically?

Yes. Platforms offer features such as dynamic text replacement and audience-based variations, and AI-assisted workflows can generate account-specific pages at scale for ABM campaigns, with human review.

Sources

  1. Unbounce, What is the average landing page conversion rate?
  2. web.dev, Milliseconds make millions
  3. McKinsey, The value of getting personalization right, or wrong, is multiplying
RoundPatch Editorial

Insights from the RoundPatch team — a boutique group of senior specialists in marketing design, UI/UX, web development, email marketing and AI-powered personalization.

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