diff --git a/.Rbuildignore b/.Rbuildignore
index a364ed8..be82aae 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -8,3 +8,6 @@
 ^\.gitattributes$
 ^review$
 ^cran-comments\.md$
+^_pkgdown\.yml$
+^docs$
+^pkgdown$
diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
new file mode 100644
index 0000000..e3aca87
--- /dev/null
+++ b/.github/workflows/pkgdown.yaml
@@ -0,0 +1,50 @@
+# Build the documentation site with pkgdown and publish it to GitHub Pages
+# (https://nullsatz.github.io/gputools/) on every push to master. The
+# runner has no CUDA, so this is the no-CUDA build: the examples, which
+# run only if gpuAvailable(), are shown but not run, and the benchmarks
+# vignette reads its measurements from the CSVs in vignettes/.
+name: pkgdown
+
+on:
+  push:
+    branches: [master]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: r-lib/actions/setup-pandoc@v2
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::pkgdown, local::.
+          needs: website
+      - run: Rscript -e 'pkgdown::build_site_github_pages(new_process = FALSE, install = FALSE)'
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: docs
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-24.04
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - id: deployment
+        uses: actions/deploy-pages@v4
diff --git a/.gitignore b/.gitignore
index 0cfb2d0..6efe66b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ src/Makevars
 src/*.o
 src/*.so
 src/nocuda-reason.h
+docs/
diff --git a/DESCRIPTION b/DESCRIPTION
index d5f45aa..ece5dd9 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -27,5 +27,5 @@ Description: GPU versions of base R statistics for data with many
     package installs, and its functions explain how to get a 'CUDA' build.
     Described in Buckner et al. (2010) <doi:10.1093/bioinformatics/btp608>.
 License: GPL-3
-URL: https://github.com/nullsatz/gputools
+URL: https://nullsatz.github.io/gputools/, https://github.com/nullsatz/gputools
 BugReports: https://github.com/nullsatz/gputools/issues
diff --git a/_pkgdown.yml b/_pkgdown.yml
new file mode 100644
index 0000000..9352e13
--- /dev/null
+++ b/_pkgdown.yml
@@ -0,0 +1,60 @@
+url: https://nullsatz.github.io/gputools/
+
+template:
+  bootstrap: 5
+
+home:
+  title: GPU drop-ins for base R statistics on wide data
+
+navbar:
+  structure:
+    left: [reference, articles]
+    right: [search, github]
+
+reference:
+- title: Pairwise statistics over many variables
+  desc: Every pair of variables at once, on the GPU.
+  contents:
+  - gpuCor
+  - gpuCorPairs
+  - gpuAssoc
+  - gpuTtest
+  - gpuDist
+  - gpuGranger
+  - gpuMi
+- title: Permutation tests
+  desc: Permutation and Westfall-Young maxT p-values for every test.
+  contents:
+  - gpuCorPerm
+  - gpuRowTtest
+- title: Clustering and components
+  contents:
+  - gpuHclust
+  - gpuDistClust
+  - gpuKmeans
+  - gpuPrcomp
+  - gpuSvd
+- title: Models and linear algebra
+  desc: The same interface as base R; base R is as fast at most sizes.
+  contents:
+  - gpuLm
+  - gpuLm.fit
+  - gpuLm.defaultTol
+  - gpuLsfit
+  - gpuGlm
+  - gpuQr
+  - gpuSolve
+  - gpuMatMult
+  - gpuCrossprod
+  - gpuTcrossprod
+  - cpuMatMult
+- title: The GPU
+  contents:
+  - gpuAvailable
+  - chooseGpu
+  - getGpuId
+
+articles:
+- title: Benchmarks
+  contents:
+  - benchmarks