diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ad5443ab8f..84b0fdcaee 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,9 +26,6 @@ jobs:
     - run: npm install
     - name: Typecheck with TypeScript
       run: npm run typecheck
-    - name: Build client bundles
-      run: node ./config/esbuild-cli.js --config=min --no-typecheck --define STATE_SERVERS=$(cat config/state_servers.json | tr -d " \t\n\r")
-    - run: cp -r ./dist/min appengine/frontend/static/
     - name: Get branch name (merge)
       if: github.event_name != 'pull_request'
       shell: bash
@@ -38,6 +35,15 @@ jobs:
       shell: bash
       run: echo "BRANCH_NAME=$(echo ${GITHUB_HEAD_REF} | tr / -)" >> $GITHUB_ENV
     - run: echo "BRANCH_NAME_URL=$(echo ${{ env.BRANCH_NAME }} | tr / - | tr _ -)" >> $GITHUB_ENV
+    - name: Get build info
+      run: echo "BUILD_INFO={'tag':'$(git describe --always --tags)', 'url':'https://github.com/${{github.repository}}/commit/$(git rev-parse HEAD)', 'timestamp':'$(date)', 'branch':'${{github.repository}}/${{env.BRANCH_NAME}}'}" >> $GITHUB_ENV
+      shell: bash
+    - name: Write build info
+      run: echo ${{ env.BUILD_INFO }} >> src/version.json
+      shell: bash
+    - name: Build client bundles
+      run: node ./config/esbuild-cli.js --config=min --no-typecheck --define STATE_SERVERS=$(cat config/state_servers.json | tr -d " \t\n\r") --define NEUROGLANCER_BUILD_INFO="${{ env.BUILD_INFO }}"
+    - run: cp -r ./dist/min appengine/frontend/static/
     - name: start deployment
       uses: bobheadxi/deployments@v1
       id: deployment
diff --git a/config/esbuild.js b/config/esbuild.js
index eb9423ea60..b0715e4670 100644
--- a/config/esbuild.js
+++ b/config/esbuild.js
@@ -143,6 +143,15 @@ j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
     await fs.promises.writeFile(path.resolve(this.outDir, 'index.html'), indexHtml);
   }
 
+  async writeInfo() {
+    if (this.define.NEUROGLANCER_BUILD_INFO) {
+      await fs.promises.writeFile(path.resolve(this.outDir, 'version.json'), this.define.NEUROGLANCER_BUILD_INFO);
+    }
+    if (this.define.STATE_SERVERS) {
+      await fs.promises.writeFile(path.resolve(this.outDir, 'state_servers.json'), this.define.STATE_SERVERS);
+    }
+  }
+
   getBaseEsbuildConfig() {
     return {
       outdir: this.outDir,
@@ -187,6 +196,7 @@ j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
 
   async buildNonModule() {
     await this.writeIndex();
+    await this.writeInfo();
     if (!this.python) {
       await fs.promises.copyFile(
           path.resolve(this.srcDir, 'neuroglancer/datasource/boss/bossauth.html'),