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CMS Migration Statistics 2026: How Often Sites Switch, Why, and What It Costs

How the CMS market moved from 2015 to October 2026, how often organisations switch platforms, the reasons they give, what a migration costs and how long search traffic takes to settle.

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Octo Agency cover: CMS Migration Statistics 2026, with a purple hexagon pattern

WordPress ran 43.0% of all websites on 1 January 2026 and 39.6% on 20 October 2026, according to W3Techs. That is the largest fall in WordPress's share in W3Techs' yearly record since 2015, and it happened one month at a time: the share fell in every monthly reading this year while the share of sites on no detectable CMS rose from 28.6% to 32.1%.

This page collects what is measured about CMS migration: the market data from W3Techs and the HTTP Archive, the switching and satisfaction surveys from Storyblok and Webflow, published cost ranges, and the search-traffic evidence. Vendor surveys are labelled as such, and so is our own bias: we build marketing sites in Webflow.

How the CMS market moved, 2015 to 2026

W3Techs checks the top 10 million websites and reports each system's share of all of them. Its yearly history is the longest consistent record of which platforms sites are moving to and away from.

Share of all websites by CMS, W3Techs, selected years
CMSJan 2015Jan 2020Jan 2024Jan 202620 Oct 2026
No detectable CMS61.7%43.1%31.4%28.6%32.1%
WordPress23.3%35.4%43.1%43.0%39.6%
Shopify0.3%1.9%4.1%5.0%5.3%
Wix0.1%1.3%2.6%4.2%4.2%
Squarespace0.2%1.5%2.1%2.4%2.4%
Joomla3.3%2.6%1.7%1.3%1.1%
Drupal2.0%1.7%1.1%0.8%0.6%
WebflowNot listed0.1%0.7%0.9%0.8%

Source: W3Techs historical yearly trends in the usage of content management systems, read 20 October 2026

Three patterns stand out. Hosted builders took the growth of the last five years: Shopify, Wix and Squarespace together went from 4.7% of the web in 2020 to 11.9% now. The older open-source systems shrank steadily, with Joomla losing about two thirds of its share since its 2017 peak and Drupal about three quarters since 2018. And WordPress, after a decade of climbing, flattened at about 43% from 2022 to January 2026 before this year's fall.

Webflow is small by this measure, at 0.8% of all websites and 1.2% of sites with a known CMS. It reached 0.9% in late 2025 and eased back to 0.8% from August 2026.

2026: the year WordPress lost share

The monthly readings show the 2026 change was gradual, not a single reclassification.

Monthly movement, January to October 2026
Measure1 Jan1 Apr1 Jul1 Oct20 Oct
WordPress, share of all websites43.0%42.5%41.5%40.2%39.6%
No detectable CMS28.6%28.9%29.9%31.5%32.1%
Shopify5.0%5.1%5.2%5.4%5.3%
Webflow0.9%0.9%0.9%0.8%0.8%

Source: W3Techs monthly CMS usage trends, read 20 October 2026

Among sites with a known CMS, WordPress's market share went from 60.2% on 1 January to 58.3%, while Shopify rose from 7.0% to 7.9% and Wix from 5.8% to 6.2%. W3Techs does not say why the no-CMS group grew. Its current list does include newer entries: Lovable at 0.2% of all websites, Astro at 0.2%, Framer at 0.2% and v0 at 0.1%. A plausible reading is that some new and rebuilt sites are now generated with AI app builders or static frameworks rather than a traditional CMS, but that is our inference, not a W3Techs finding.

The HTTP Archive's Web Almanac 2025, published in January 2026 from a different crawl, gives an earlier snapshot: CMS-driven sites made up over 54% of observed websites in 2025, WordPress powered roughly 64% of CMS-driven sites on mobile, and its growth had slowed to under one percentage point a year. The two datasets measure differently, so read each as a trend rather than comparing their percentages directly.

Where switching is concentrated: bigger sites

Share by traffic rank shows which platforms larger sites choose. On W3Techs data for 20 October 2026, Webflow runs 1.2% of all sites with a known CMS, 1.5% of the top million, 1.9% of the top 100,000, 2.3% of the top 10,000 and 2.2% of the top 1,000. WordPress runs 58.3% of all CMS sites but only 48.3% of the top million, 50.6% of the top 100,000 and 52.0% of the top 1,000.

Webflow's share roughly doubles between all sites and the top 10,000, which fits its position as a platform for company marketing sites rather than small personal ones. The Web Almanac adds that Drupal holds about 6% to 7% of CMS usage among the top 10,000 sites, far above its overall share, which is why many Drupal migrations are large enterprise projects.

How often organisations switch

No independent body publishes an annual CMS switching rate. The best figures come from two CMS vendors' surveys of their market.

Switching and multi-CMS figures from vendor surveys
FindingFigureSurvey
Migrated to a new CMS in the past three years68%Storyblok, 1,719 CMS users, US, UK, Germany, Netherlands, Sweden, March 2024
Non-headless users likely to switch to headless within two years74%Same
Use more than one CMS in the organisation81%Same
Teams managing two or more CMSs61%Storyblok, 1,300 CMS users, May 2025
Trying out different CMSs to modernise content operations50%Same
Technical leaders completely satisfied with their website34%Webflow and Vanson Bourne, 1,000 leaders, US, Canada, UK, 2026 report
Same, among custom-built sites29%Same

Source: Storyblok State of CMS 2024 and 2025 press releases; Webflow 2026 State of the Website

Both publishers sell a CMS, and both surveys favour the conclusion that people should switch. Treat 68% as an upper bound for a market that includes many multi-brand organisations. Even discounted heavily, the figures say the same thing: a CMS is a decision most organisations revisit within a few years, and many run two systems during the move.

Our Website Redesign Statistics 2026 page covers how often companies redesign and what they pay. A redesign is when most platform changes happen, so the two sets of numbers should be read together.

Why organisations leave a CMS

Storyblok's 2024 respondents named security issues and lack of features, tied, as the most common reasons for migrating. Webflow's 2026 survey of 700 marketing leaders and 300 technical leaders describes the same pressure from the inside.

The pressures behind a move, Webflow 2026 State of the Website
FindingShare
Technical leaders who say technical debt affects how they manage the website97%
Organisations receiving more web project requests overall95%
Organisations whose tech stack grew year on year (90% the year before)95%
Organisations whose update requests are growing in size and complexity92%
Technical leaders who blame platform issues for their frustrations62%
Leaders completely confident their infrastructure supports rapid change without new security risk47%
Organisations that always deliver web projects on time and on budget28%

Source: Webflow and Vanson Bourne, vendor-sourced

Performance is the third reason, and the one with independent data. In the Web Almanac 2025, 45% of WordPress sites passed Core Web Vitals on mobile, among the lowest of the platforms measured, while Wix rose from 55% to 74% in a year. Median mobile Lighthouse performance was 41 for WordPress, 58 for Webflow and 64 for Wix. Our Webflow vs WordPress for a B2B Marketing Site in 2026 comparison covers the speed and security data platform by platform.

The fourth reason does not show up in surveys: support ending. HubSpot's knowledge base states that its website migration service was sunset on 7 October 2026, and before that most HubSpot migrations were completed within two to four weeks. When a vendor withdraws a service or a version, the migration date stops being a choice.

What a CMS migration costs

Migration prices are rarely published by platform. The most detailed public table comes from a price-estimator site that says it draws on more than 600 project quotes and rate benchmarks; it also sells estimates and earns affiliate commission, so read it as one publisher's ranges.

Published migration cost and timeline ranges, from WordPress
DestinationFreelancerAgencyTimeline
WordPress rebuild$2,000 to $8,000$5,000 to $15,0003 to 6 weeks
Shopify$3,000 to $12,000$8,000 to $25,0004 to 8 weeks
Webflow$4,000 to $15,000$10,000 to $30,0004 to 10 weeks
Headless or Next.js$8,000 to $25,000$20,000 to $60,000 or more8 to 16 weeks

Source: Project Cost Estimator, WordPress migration cost, May 2026

The same source names content volume and URL preservation as the main cost drivers, ahead of the destination platform. Its redirect-map pricing makes the point: up to 50 URLs included, 50 to 500 at $300 to $800, 500 to 5,000 at $1,000 to $3,500, and over 5,000 at $2,500 to $8,000.

Our own numbers sit at the faster end. As a white-label partner to Web Tonic we have built more than 20 Webflow sites in twelve months at two to three weeks each, the largest with a CMS of over 1,200 items, and our marketing-site process runs four weeks. We quote migrations per project rather than publishing prices. Our Webflow CMS Limits in 2026 page covers the item and field ceilings that decide whether a large content library fits.

The search traffic risk, measured

Google's site-move documentation, updated in August 2026, says a small to medium-sized website can take a few weeks for most pages to move, larger sites take longer, rankings may fluctuate while Google recrawls, and redirects should stay in place for as long as possible, generally at least a year.

The only large study of recovery times covers domain migrations, which are a harder case than a platform change on the same domain. Use it as an outer bound.

Domain migration recovery, Search Engine Journal studies
Measure2023 study2025 study
Migrations analysed171892
Average days to regain prior organic traffic229523
Not recovered42% never returned17% after 1,000 days
Fastest recoveriesNot reported19, 22, 23 and 33 days

Source: Dan Taylor, Search Engine Journal, January 2025, using third-party traffic estimates

A CMS move that keeps the domain and the URLs is a much smaller event for Google than this. Google's guidance and the cost data point to the same place: the risk sits in changed URLs without one-to-one redirects, which is why the redirect map is the line item not to cut.

What this means for a migration decision

The data supports three rules. First, expect to move: most organisations revisit their CMS within a few years, and the market is drifting from self-hosted systems towards hosted platforms. Second, budget for content and URLs, not the platform: a 20-page site and a 4,000-post blog are different jobs on any destination. Third, plan the search side before the build: keep the domain, map every URL with traffic or links, and keep the redirects for at least a year. If we were scoping your move, we would start with a crawl of the old site and a redirect map, then build. Our marketing websites service page explains how we scope a migration.

Frequently asked questions

How often do companies change their CMS?

Often. In Storyblok's 2024 survey of 1,719 CMS users across five countries, 68% had migrated to a new CMS in the past three years, and 81% ran more than one CMS. Storyblok sells a CMS, so treat the figure as an upper bound. Even discounted, it suggests most organisations revisit their CMS within a few years, usually during a redesign.

Is WordPress losing market share in 2026?

Yes, on W3Techs data. WordPress ran 43.0% of all websites on 1 January 2026 and 39.6% on 20 October 2026, falling in every monthly reading. Its share of sites with a known CMS fell from 60.2% to 58.3%. Over the same period the share of sites with no detectable CMS rose from 28.6% to 32.1%, and Shopify grew from 5.0% to 5.3%.

How much does it cost to migrate a website to a new CMS?

Published ranges for a WordPress move run $4,000 to $15,000 with a freelancer and $10,000 to $30,000 with an agency for Webflow, and $20,000 to $60,000 or more with an agency for a headless or Next.js build, according to Project Cost Estimator's May 2026 table. Content volume and the number of URLs to redirect move the price more than the destination platform does.

How long does a CMS migration take?

Published ranges run four to ten weeks for WordPress to Webflow and eight to 16 weeks for a headless build. HubSpot reported most of its migrations completed in two to four weeks before it sunset the service in October 2026. Google adds that a small to medium site takes a few weeks for most pages to move in search, and longer for large sites.

Will I lose SEO traffic when I migrate CMS?

Some fluctuation is normal. Google says rankings may fluctuate while it recrawls and advises keeping redirects for at least a year. Losses come mostly from changed URLs without redirects. Domain moves are the worst case: Search Engine Journal's study of 892 domain migrations found an average of 523 days to regain traffic, with 17% not recovered after 1,000 days.

Sources

  1. Historical yearly trends in the usage statistics of content management systems W3Techs, 2026
  2. Historical trends in the usage statistics of content management systems W3Techs, 2026
  3. Market share yearly trends for content management systems W3Techs, 2026
  4. Usage statistics of content management systems W3Techs, 2026
  5. Usage statistics of Webflow broken down by ranking W3Techs, 2026
  6. Usage statistics of WordPress broken down by ranking W3Techs, 2026
  7. CMS, Web Almanac 2025 HTTP Archive, 2026
  8. Storyblok's CMS report finds 99% of companies report improvements after switching to a headless CMS Storyblok, 2024
  9. Storyblok's CMS report shows companies are hungry for AI and held back by legacy systems Storyblok, 2025
  10. The 2026 State of the Website Webflow with Vanson Bourne, 2026
  11. The weight of technical debt, 2026 State of the Website Webflow with Vanson Bourne, 2026
  12. Understand HubSpot's website migration process HubSpot Knowledge Base, 2026
  13. Site moves with URL changes Google Search Central, 2026
  14. Study: how long should an SEO migration take? Search Engine Journal, 2025
  15. WordPress migration cost: what we charge in 2026 Project Cost Estimator, 2026

Tags

  • CMS migration
  • Webflow
  • Benchmarks
  • Statistics
Mihajlo Stojanovic

Mihajlo Stojanovic

Co-founder, Octo Agency

Mihajlo runs the technical side of Octo Agency: Webflow builds, custom backends and the systems that keep a site editable after launch. He has shipped more than twenty Webflow sites a year as a white-label partner and writes about what survives contact with a real marketing team.

Veljko Nikolic

Reviewed by

Veljko Nikolic

Co-founder, Octo Agency

Veljko runs the build side of Octo Agency. He has shipped marketing sites for B2B teams in legal tech, health and manufacturing, and writes about what survives contact with a real review cycle.