diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4ef54758051..d5eab07fd65 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -22,8 +22,6 @@ jobs:
         extra_nix_config: |
           experimental-features = nix-command
 
-    - run: nix-env -iA nix-build-uncached -f nix/
-
     # We are using the ic-hs-test cachix cache that is also used by
     # dfinity/ic-hs. This is partly laziness (on need to set up a separate
     # cache), but also to get the ic-ref-test binary without rebuilding
@@ -35,6 +33,8 @@ jobs:
     # until https://github.com/cachix/cachix-action/issues/86 is fixed:
     - run: cachix watch-store ic-hs-test &
 
+    - run: nix-env -iA nix-build-uncached -f nix/
+
     - name: "nix-build"
       run: nix-build-uncached --max-jobs 4 -A all-systems-go -build-flags -L
 
@@ -77,3 +77,28 @@ jobs:
           <!-- perf comment -->
           ${{ steps.perf.outputs.content }}
         edit-mode: replace
+
+  reports:
+    if: github.ref == 'refs/heads/master'
+    needs: tests
+    concurrency: ci-${{ github.ref }}
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: cachix/install-nix-action@v16
+      with:
+        extra_nix_config: |
+          experimental-features = nix-command
+    - uses: cachix/cachix-action@v10
+      with:
+        name: ic-hs-test
+    - name: Fetch report
+      run: nix-build -A report-site -o report-site
+    - name: Resolve symlinks
+      run: cp -rL report-site report-site-copy
+    - name: Push report to gitub pages
+      uses: JamesIves/github-pages-deploy-action@v4.2.5
+      with:
+        branch: gh-pages
+        folder: report-site-copy
+        single-commit: true
diff --git a/CI.md b/CI.md
index 0fa1ab84f1b..e553e3d08e6 100644
--- a/CI.md
+++ b/CI.md
@@ -94,22 +94,28 @@ Mergify reacts to the `automerge-squash` label. Once approved and CI passes, it
 merges master into the branch (using normal merge, which is important for
 stashed PRs) and then squash-merges the PR.
 
-Render and show generated base docs
------------------------------------
+Render and provide various reports
+----------------------------------
 **Use-case:**
-To be able to see and share the effects on the generated documentation for the base library, caused by a change to `mo-doc`, without needing the reviewer to generate the documentation locally.
+Various build artifacts are most useful when available directly in the browser, namely:
 
-**Implementation (internal):**
-Hydra hosts the build product of the `base-doc` CI job. This can be found via the Hydra job status page, and the there is a stable link for the latest build of `master` and of each PR.
+ * The motoko user guide
+ * The “overview slides”
+ * The documentation for `motoko-base`, in the version pinned by motoko
+ * Flamegraphs for the programs in `tests/perf`
 
-Render and show slides
-----------------------
-**Use-case:**
-To be able to see and share the “overview slides”, the rendered version should be hosted somewhere.
+A stable link to these should exist for `master`, and an easy-to-find link for each PR.
 
 **Implementation (internal):**
-Hydra hosts the build product of the `overview-slides` CI job. This can be found via the Hydra job status page, and the there is a stable link for the latest build of `master` and of each PR.
+Hydra hosts the build products of the relevant jobs, and can be found via the
+Hydra job status page, and the there is a stable link for the latest build of
+`master` and of each PR.
 
+**Implementation (external):**
+The latest `master` version of the file is availble at
+<https://dfinity.github.io/motoko/>.
+The reports are calculated in PRs (so failures would be caught), but are not
+hosted anywhere.
 
 Performance changes are known
 -----------------------------
diff --git a/default.nix b/default.nix
index af8ce5cfb58..986c0d84f49 100644
--- a/default.nix
+++ b/default.nix
@@ -617,6 +617,22 @@ rec {
     '';
   };
 
+  report-site = nixpkgs.runCommandNoCC "report-site" {
+    buildInputs = [ nixpkgs.tree ];
+  } ''
+    mkdir -p $out
+    ln -s ${base-doc} $out/base-doc
+    ln -s ${docs} $out/docs
+    ln -s ${tests.profiling-graphs} $out/flamegraphs
+    cd $out;
+    # generate a simple index.html, listing the entry points
+    ( echo docs/overview-slides.html;
+      echo docs/docs/language-guide/motoko.html;
+      echo base-doc/index.html
+      echo flamegraphs/index.html ) | \
+      tree -H . -l --fromfile -T "Motoko build reports" > index.html
+  '';
+
   check-generated = nixpkgs.runCommandNoCC "check-generated" {
       nativeBuildInputs = [ nixpkgs.diffutils ];
       expected = import ./nix/generate.nix { pkgs = nixpkgs; };
@@ -673,6 +689,7 @@ rec {
       base-tests
       base-doc
       docs
+      report-site
       ic-ref-run
       shell
       check-formatting