diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index be33aac3c1..cd42ff44b7 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -16,8 +16,8 @@ env:
   LC_ALL: en_US.UTF-8
 
 jobs:
-  lint:
-    name: Check linting issues
+  size:
+    name: Report respec-w3c size
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -29,50 +29,22 @@ jobs:
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-12-${{ hashFiles('**/package-lock.json') }}
-      - run: npm ci
-      - run: npm run lint
-
-  test-headless:
-    name: Headless Tests
-    runs-on: ubuntu-latest
-    needs: lint
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
-        with:
-          node-version: 12
-      - name: Cache node modules
-        uses: actions/cache@v1
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-12-${{ hashFiles('**/package-lock.json') }}
-      - name: install & build
+      - name: Get current size
+        id: current-size
         run: |
           npm ci
           npm run build:w3c
-      - run: npm run test:headless
-
-  test-karma:
-    name: Karma Unit Tests (${{ matrix.browser }})
-    strategy:
-      matrix:
-        browser: [ChromeHeadless, FirefoxHeadless]
-    runs-on: ubuntu-latest
-    needs: lint
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
-        with:
-          node-version: 12
-      - name: Cache node modules
-        uses: actions/cache@v1
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-12-${{ hashFiles('**/package-lock.json') }}
-      - name: install & build
+          gzip -k builds/respec-w3c.js
+          stat -c "%6s  %n" builds/respec-w3c.js*
+          git clean -fd && git checkout -- .
+      - name: Get base size
+        id: base-size
         run: |
+          git fetch --depth=1 origin +refs/heads/${{ github.base_ref }}
+          git checkout ${{ github.base_ref }}
           npm ci
-          npm run build:w3c & npm run build:geonovum
-      - run: npm run test:karma
-        env:
-          BROWSERS: ${{ matrix.browser }}
+          npm run build:w3c
+          gzip -k builds/respec-w3c.js
+          stat -c "%6s  %n" builds/respec-w3c.js*
+          git clean -fd && git checkout -- .
+          git checkout -