diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index ac29986fa..000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-version: 2.1
-jobs:
-  build-book:
-    docker:
-      - image: cimg/python:3.13
-    steps:
-      - checkout
-      - run:
-          name: Restore mtimes from git history
-          command: |
-            sudo apt-get update
-            sudo apt-get install git-restore-mtime
-            git restore-mtime
-      - run:
-          name: setup environment
-          command: |
-            pip install --upgrade pip
-            pip install nox
-            pip list
-      - run:
-          name: Build book html
-          command: nox -s docs
-
-      - store_artifacts:
-          path: _build/html
-          destination: html
-
-# Tell CircleCI to use this workflow when it builds the site
-workflows:
-  version: 2
-  build-book:
-    jobs:
-      - build-book
diff --git a/.github/workflows/artifact_redirect.yml b/.github/workflows/artifact_redirect.yml
deleted file mode 100644
index 4b43d9728..000000000
--- a/.github/workflows/artifact_redirect.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-name: Book Preview Redirect
-on: [status]
-
-concurrency:
-  group: docs-preview-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  circleci_artifacts_redirector_job:
-    runs-on: ubuntu-latest
-    # For testing this action on a fork, remove the "github.repository =="" condition.
-    if: "github.event.context == 'ci/circleci: build-book'"
-    permissions:
-      statuses: write
-    name: Run CircleCI artifacts redirector
-    steps:
-      - name: GitHub Action step
-        uses: scientific-python/circleci-artifacts-redirector-action@5d358ff96e96429a5c64a969bb4a574555439f4f # v1.3.1
-        with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-          api-token: ${{ secrets.CIRCLECI_TOKEN }}
-          artifact-path: 0/html/index.html
-          circleci-jobs: build-book
-          job-title: View rendered book here!
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 870475bf1..2f68cec00 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -256,7 +256,7 @@ Once you submit a pull request, a series of checks will be run to ensure that yo
 
 - **Code formatting and styles**: checks that your code is formatted correctly, by `pre-commit.ci - pr check`.
 - **docs build**: checks that the documentation builds correctly, using `circleci`.
-
+- **docs build / preview**: builds the guide and publishes a Netlify deploy preview (see [Pull request previews](#pull-request-previews) below).
 You will see the status of these checks in your pull request.
 
 ```{figure} images/contributing/pull-requests-checks.png
@@ -280,6 +280,15 @@ An image showing the status of the checks in a pull request in GitHub. The check
 
 To get more information about the errors, you can click on the "Details" link next to the failed check.
 
+### Pull request previews
+
+This guide uses [Netlify](https://www.netlify.com/) deploy previews. After
+the Netlify check finishes on a pull request, click **Details** next to the
+deploy-preview status to open a live build with your changes.
+
+The guide is still deployed live using GitHub Pages:
+<https://www.pyopensci.org/python-package-guide/>.
+
 ### What to expect from the review process
 
 Once you submit a pull request, a maintainer of the repository will review your changes and provide feedback. The review process may involve:
diff --git a/README.md b/README.md
index 4851177b8..9483f63fd 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,6 @@
 
 [![DOI](https://zenodo.org/badge/556814582.svg)](https://zenodo.org/badge/latestdoi/556814582)
 
-[![CircleCI](https://circleci.com/gh/pyOpenSci/python-package-guide.svg?style=svg)](https://circleci.com/gh/pyOpenSci/python-package-guide)
-
 [![Mentioned in Awesome Scientific Python](https://awesome.re/mentioned-badge.svg)](https://github.com/rossant/awesome-scientific-python)
 
 ## What is pyOpenSci?
diff --git a/conf.py b/conf.py
index 8f2be65b6..a1413bbc7 100644
--- a/conf.py
+++ b/conf.py
@@ -51,7 +51,11 @@
 
 # languages that will be included in the language dropdown
 # (ie. all that are being built in this nox build session)
-if sphinx_env == "production":
+# Netlify sets NETLIFY=true. Those builds publish the same languages as
+# production. Link prefixes stay at "/" because SPHINX_ENV is development
+# there (see netlify.toml). Local builds are unchanged.
+on_netlify = os.environ.get("NETLIFY", "").lower() == "true"
+if sphinx_env == "production" or on_netlify:
     build_languages = ["en"] + release_languages
 else:
     build_languages = ["en"] + languages
diff --git a/netlify.toml b/netlify.toml
new file mode 100644
index 000000000..dd66da27e
--- /dev/null
+++ b/netlify.toml
@@ -0,0 +1,15 @@
+# Netlify deploy previews for the pyOpenSci Python package guide (Sphinx).
+# Production remains GitHub Pages:
+# https://www.pyopensci.org/python-package-guide/
+
+[build]
+  command = "bash scripts/netlify-build.sh"
+  publish = "_build/html"
+
+[build.environment]
+  PYTHON_VERSION = "3.13"
+  MPLBACKEND = "Agg"
+  # Previews are served from the preview URL root, so language-selector
+  # links use "/" (conf.py does that whenever SPHINX_ENV is not production).
+  # Netlify also sets NETLIFY=true, which limits the menu to release languages.
+  SPHINX_ENV = "development"
diff --git a/scripts/netlify-build.sh b/scripts/netlify-build.sh
new file mode 100755
index 000000000..8021d3524
--- /dev/null
+++ b/scripts/netlify-build.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+# Build the Sphinx Python package guide on Netlify (deploy previews).
+set -euo pipefail
+
+# hatch-vcs reads the package version from git tags. Netlify's checkout
+# often has no tags. The docs do not display this version.
+export SETUPTOOLS_SCM_PRETEND_VERSION="${SETUPTOOLS_SCM_PRETEND_VERSION:-0.0.0}"
+
+python -m pip install --upgrade pip
+python -m pip install nox
+python -m nox -s docs