Domain traffic 3 to 5 months after moving the blog to a subfolder
| Group | Sites | Median traffic kept | Beat market | Lost >10% |
|---|---|---|---|---|
| Blog under 5% of traffic | 186 | 91.6% | 57.0% | 47.8% |
| Blog 5% to 20% | 85 | 97.6% | 61.2% | 42.4% |
| Blog 20%+ | 167 | 84.6% | 52.1% | 50.9% |
| Under 1K visits | 188 | 83.0% | 46.3% | 53.2% |
| 1K to 10K visits | 90 | 96.3% | 56.7% | 47.8% |
| 10K+ visits | 160 | 96.4% | 66.9% | 41.9% |
Source: PageSpeed Matters, Sept 2026. US traffic estimates only; the market comparison is indicative.
Summary
Many sites move their blog from blog.example.com into a folder such as example.com/blog. The usual worry is that the move costs traffic while search engines catch up with the new URLs.
We looked at 438 sites that wound down a blog subdomain in 2025 or early 2026, the pattern a move into a subfolder leaves. Three to five months later, the median root domain had 92.1% of its previous estimated US organic traffic. The typical site came through with a modest dip, but almost half lost more than 10%.
What we measured
We used monthly US organic traffic estimates for each domain and its blog subdomain, covering June 2024 to September 2026. A move is dated to the month a blog subdomain's traffic collapsed and stayed down. We then compared whole-domain traffic three to five months later with the months before.
This is a short study and an approximation. Moves are inferred from the drop in blog subdomain traffic, not from confirmed redirects, so we cannot say every site redirected its blog into a folder. The figures are US estimates only, and the blog is a small share of most domains, which limits how much a move can show up in domain totals. The comparison with sites that did not move is indicative: the share that beat the market swings between 55.9% and 58.9% depending on method.
Most sites kept most of their traffic
Three to five months after the move, the median root domain among the 438 sites had 92.1% of its prior estimated US organic traffic. 47.9% lost more than 10%. Before the move, the blog subdomain was a median 9.1% of the domain's traffic, so for most sites the blog was a small part of the whole.
Comparable sites that did not move came in at 86.3% over the same windows, and 55.9% of the movers beat that market trend. Moving the blog does not appear to have done broad damage, though the market comparison is a rough guide, not proof that the move helped.
92.1%
Median share of prior estimated US organic traffic the root domain had three to five months after its blog subdomain traffic moved away.
Bigger sites did better, blog-heavy sites worse
Bigger domains came through better. Sites with 10,000+ estimated monthly US visits kept a median 96.4% (160 sites), against 83.0% for sites under 1,000 visits (188 sites). Under 1,000 visits a month, only 46.3% of sites beat the market trend, against 66.9% of sites with 10,000+ visits.
Blog-heavy sites fared worst. Where the blog was 20% or more of domain traffic, the median site kept 84.6% (167 sites), against 97.6% where the blog was 5% to 20% (85 sites) and 91.6% where it was under 5% (186 sites). When the blog carries a large share of a site's traffic, more of the domain is likely exposed to any loss during the move.
What this means for your site
A blog move into a subfolder is usually survivable, but plan it as a migration.
- Redirect every old blog URL to its matching post in the new folder with a permanent 301, one to one.
- Update internal links, canonical tags and the sitemap to the new URLs on launch day.
- Take extra care if the blog drives a large share of your traffic, or if the site is small.
- Track traffic for the blog folder and the whole domain for at least five months after the move.
Sources
- PageSpeed Matters analysis of monthly US organic traffic estimates for 438 sites, June 2024 to September 2026
- HTTP Archive crawl data, September 2026
- Google Search Central, site moves with URL changes: https://developers.google.com/search/docs/crawling-indexing/site-move-with-url-changes
Frequently asked questions
Do you lose traffic moving a blog from a subdomain to a subfolder?
Usually a little. Across 438 sites that wound down a blog subdomain, the median root domain had 92.1% of its prior US organic traffic three to five months after the move, and 47.9% lost more than 10%.
Which sites lose the most traffic after a blog subfolder move?
Smaller sites and sites whose blog drives a large share of traffic. Sites under 1,000 monthly visits kept a median 83.0%, and sites where the blog was 20% or more of traffic kept 84.6%.
A one-to-one redirect plan and careful tracking keep a blog move from costing the traffic your posts have built. Need help with this? See our SEO migration services.