diff --git a/.github/workflows/desktop-e2e.yml b/.github/workflows/desktop-e2e.yml
index d8e68d101..2a40238b2 100644
--- a/.github/workflows/desktop-e2e.yml
+++ b/.github/workflows/desktop-e2e.yml
@@ -1,7 +1,14 @@
 name: desktop-e2e
+# Only desktop changes, or changes to this workflow, run it.
 on:
   pull_request:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-e2e.yml"
   push:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-e2e.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/desktop-lint.yml b/.github/workflows/desktop-lint.yml
index 299fb413e..a88a917af 100644
--- a/.github/workflows/desktop-lint.yml
+++ b/.github/workflows/desktop-lint.yml
@@ -1,7 +1,14 @@
 name: desktop-lint
+# Only desktop changes, or changes to this workflow, run it.
 on:
   pull_request:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-lint.yml"
   push:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-lint.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/desktop-unit-test.yml b/.github/workflows/desktop-unit-test.yml
index 3a6d5d162..7f42becc3 100644
--- a/.github/workflows/desktop-unit-test.yml
+++ b/.github/workflows/desktop-unit-test.yml
@@ -1,7 +1,14 @@
 name: desktop-unit-test
+# Only desktop changes, or changes to this workflow, run it.
 on:
   pull_request:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-unit-test.yml"
   push:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-unit-test.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/explorer-build.yml b/.github/workflows/explorer-build.yml
index 24fcfe389..0f28e05bf 100644
--- a/.github/workflows/explorer-build.yml
+++ b/.github/workflows/explorer-build.yml
@@ -1,6 +1,17 @@
 name: explorer-build
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/explorer-check.yml b/.github/workflows/explorer-check.yml
index 573c77027..a0bd7605e 100644
--- a/.github/workflows/explorer-check.yml
+++ b/.github/workflows/explorer-check.yml
@@ -1,6 +1,17 @@
 name: explorer-check
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/explorer-e2e.yml b/.github/workflows/explorer-e2e.yml
index 46ae9b785..640022b22 100644
--- a/.github/workflows/explorer-e2e.yml
+++ b/.github/workflows/explorer-e2e.yml
@@ -1,6 +1,17 @@
 name: explorer-e2e
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/explorer-http-client-unit-test.yml b/.github/workflows/explorer-http-client-unit-test.yml
index 9ca88d6c9..dca3d9d7a 100644
--- a/.github/workflows/explorer-http-client-unit-test.yml
+++ b/.github/workflows/explorer-http-client-unit-test.yml
@@ -1,6 +1,17 @@
 name: explorer-http-client-unit-test
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/explorer-rust.yml b/.github/workflows/explorer-rust.yml
index bc1118694..4c76bf479 100644
--- a/.github/workflows/explorer-rust.yml
+++ b/.github/workflows/explorer-rust.yml
@@ -1,6 +1,14 @@
 name: explorer-rust
+# Only changes to the Rust workspace, or to this workflow, run it.
 on:
   push:
+    paths:
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/explorer-unit-test.yml b/.github/workflows/explorer-unit-test.yml
index 007becc1a..3ecbd85e8 100644
--- a/.github/workflows/explorer-unit-test.yml
+++ b/.github/workflows/explorer-unit-test.yml
@@ -1,6 +1,17 @@
 name: explorer-unit-test
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:
diff --git a/.github/workflows/explorer-visual.yml b/.github/workflows/explorer-visual.yml
index 93ed8b237..8c212aaa9 100644
--- a/.github/workflows/explorer-visual.yml
+++ b/.github/workflows/explorer-visual.yml
@@ -1,6 +1,17 @@
 name: explorer-visual
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env: