diff --git a/CHANGELOG.md b/CHANGELOG.md
index b8e7902d57..05f8f7754a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 29.7.0
+
+- Export jsenvPluginPlaceholders
+
 # 29.6.1
 
 - Fix error introduced in 29.6.0 on dev server
diff --git a/packages/jsenv-plugin-react/package.json b/packages/jsenv-plugin-react/package.json
index 711324141a..155d5c8e00 100644
--- a/packages/jsenv-plugin-react/package.json
+++ b/packages/jsenv-plugin-react/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jsenv/plugin-react",
-  "version": "1.1.5",
+  "version": "1.1.6",
   "license": "MIT",
   "repository": {
     "type": "git",
diff --git a/packages/jsenv-plugin-react/src/jsenv_plugin_react.js b/packages/jsenv-plugin-react/src/jsenv_plugin_react.js
index c92c7288e2..0a92350c76 100644
--- a/packages/jsenv-plugin-react/src/jsenv_plugin_react.js
+++ b/packages/jsenv-plugin-react/src/jsenv_plugin_react.js
@@ -24,6 +24,10 @@ export const jsenvPluginReact = ({
         "/**/node_modules/react/jsx-runtime/": { external: ["react"] },
         "/**/node_modules/react/jsx-dev-runtime": { external: ["react"] },
         "/**/react-refresh/": { external: ["react"] },
+        // in case redux is used
+        "/**/node_modules/react-is/": true,
+        "/**/node_modules/use-sync-external-store/": { external: ["react"] },
+        "/**/node_modules/hoist-non-react-statics/": { external: ["react-is"] },
       },
     }),
     jsenvPluginReactRefreshPreamble(),
diff --git a/packages/urls/package.json b/packages/urls/package.json
index 14ca3a9915..c4e5b197d3 100644
--- a/packages/urls/package.json
+++ b/packages/urls/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jsenv/urls",
-  "version": "1.2.7",
+  "version": "1.2.8",
   "license": "MIT",
   "repository": {
     "type": "git",
diff --git a/packages/urls/src/url_utils.js b/packages/urls/src/url_utils.js
index 58edc77dac..dae9d6b396 100644
--- a/packages/urls/src/url_utils.js
+++ b/packages/urls/src/url_utils.js
@@ -3,9 +3,12 @@ import { urlToExtension } from "./url_to_extension.js"
 import { urlToResource } from "./url_to_resource.js"
 
 export const asUrlWithoutSearch = (url) => {
-  const urlObject = new URL(url)
-  urlObject.search = ""
-  return urlObject.href
+  if (url.includes("?")) {
+    const urlObject = new URL(url)
+    urlObject.search = ""
+    return urlObject.href
+  }
+  return url
 }
 
 export const isValidUrl = (url) => {
diff --git a/src/main.js b/src/main.js
index 203b592deb..7fd827f519 100644
--- a/src/main.js
+++ b/src/main.js
@@ -23,8 +23,8 @@ export { startBuildServer } from "./build/start_build_server.js"
 
 // helpers
 export { pingServer } from "./ping_server.js"
-export { replacePlaceholders } from "./helpers/replace_placeholders.js"
 
 // advanced
-export { execute } from "./execute/execute.js"
 export { jsenvPluginInjectGlobals } from "./plugins/inject_globals/jsenv_plugin_inject_globals.js"
+export { jsenvPluginPlaceholders } from "./plugins/placeholders/jsenv_plugin_placeholders.js"
+export { execute } from "./execute/execute.js"
diff --git a/src/plugins/inject_globals/jsenv_plugin_inject_globals.js b/src/plugins/inject_globals/jsenv_plugin_inject_globals.js
index 86c3308bb8..f29214326a 100644
--- a/src/plugins/inject_globals/jsenv_plugin_inject_globals.js
+++ b/src/plugins/inject_globals/jsenv_plugin_inject_globals.js
@@ -1,21 +1,33 @@
+import { URL_META } from "@jsenv/url-meta"
+import { asUrlWithoutSearch } from "@jsenv/urls"
+
 import { injectGlobals } from "./inject_globals.js"
 
-export const jsenvPluginInjectGlobals = (urlAssociations) => {
+export const jsenvPluginInjectGlobals = (rawAssociations) => {
+  let resolvedAssociations
+
   return {
     name: "jsenv:inject_globals",
     appliesDuring: "*",
+    init: (context) => {
+      resolvedAssociations = URL_META.resolveAssociations(
+        { injector: rawAssociations },
+        context.rootDirectoryUrl,
+      )
+    },
     transformUrlContent: async (urlInfo, context) => {
-      const url = Object.keys(urlAssociations).find((url) => {
-        return url === urlInfo.url
+      const { injector } = URL_META.applyAssociations({
+        url: asUrlWithoutSearch(urlInfo.url),
+        associations: resolvedAssociations,
       })
-      if (!url) {
+      if (!injector) {
         return null
       }
-      let globals = urlAssociations[url]
-      if (typeof globals === "function") {
-        globals = await globals(urlInfo, context)
+      if (typeof injector !== "function") {
+        throw new TypeError("injector must be a function")
       }
-      if (Object.keys(globals).length === 0) {
+      const globals = await injector(urlInfo, context)
+      if (!globals || Object.keys(globals).length === 0) {
         return null
       }
       return injectGlobals(urlInfo, globals)
diff --git a/src/plugins/minification/jsenv_plugin_minification.js b/src/plugins/minification/jsenv_plugin_minification.js
index a16b5c695e..e2670ab7b9 100644
--- a/src/plugins/minification/jsenv_plugin_minification.js
+++ b/src/plugins/minification/jsenv_plugin_minification.js
@@ -37,6 +37,30 @@ export const jsenvPluginMinification = (minification) => {
           options: minification.json,
         })
     : null
+  const cssOptimizer = minification.css
+    ? (urlInfo, context) =>
+        minifyCss({
+          cssUrlInfo: urlInfo,
+          context,
+          options: minification.css,
+        })
+    : null
+  const jsClassicOptimizer = minification.js_classic
+    ? (urlInfo, context) =>
+        minifyJs({
+          jsUrlInfo: urlInfo,
+          context,
+          options: minification.js_classic,
+        })
+    : null
+  const jsModuleOptimizer = minification.js_module
+    ? (urlInfo, context) =>
+        minifyJs({
+          jsUrlInfo: urlInfo,
+          context,
+          options: minification.js_module,
+        })
+    : null
 
   return {
     name: "jsenv:minification",
@@ -44,30 +68,9 @@ export const jsenvPluginMinification = (minification) => {
     optimizeUrlContent: {
       html: htmlOptimizer,
       svg: htmlOptimizer,
-      css: minification.css
-        ? (urlInfo, context) =>
-            minifyCss({
-              cssUrlInfo: urlInfo,
-              context,
-              options: minification.css,
-            })
-        : null,
-      js_classic: minification.js_classic
-        ? (urlInfo, context) =>
-            minifyJs({
-              jsUrlInfo: urlInfo,
-              context,
-              options: minification.js_classic,
-            })
-        : null,
-      js_module: minification.js_module
-        ? (urlInfo, context) =>
-            minifyJs({
-              jsUrlInfo: urlInfo,
-              context,
-              options: minification.js_module,
-            })
-        : null,
+      css: cssOptimizer,
+      js_classic: jsClassicOptimizer,
+      js_module: jsModuleOptimizer,
       json: jsonOptimizer,
       importmap: jsonOptimizer,
       webmanifest: jsonOptimizer,
diff --git a/src/plugins/placeholders/jsenv_plugin_placeholders.js b/src/plugins/placeholders/jsenv_plugin_placeholders.js
new file mode 100644
index 0000000000..9a17a87bb7
--- /dev/null
+++ b/src/plugins/placeholders/jsenv_plugin_placeholders.js
@@ -0,0 +1,36 @@
+import { URL_META } from "@jsenv/url-meta"
+import { asUrlWithoutSearch } from "@jsenv/urls"
+
+import { replacePlaceholders } from "./replace_placeholders.js"
+
+export const jsenvPluginPlaceholders = (rawAssociations) => {
+  let resolvedAssociations
+
+  return {
+    name: "jsenv:placeholders",
+    appliesDuring: "*",
+    init: (context) => {
+      resolvedAssociations = URL_META.resolveAssociations(
+        { replacer: rawAssociations },
+        context.rootDirectoryUrl,
+      )
+    },
+    transformUrlContent: async (urlInfo, context) => {
+      const { replacer } = URL_META.applyAssociations({
+        url: asUrlWithoutSearch(urlInfo.url),
+        associations: resolvedAssociations,
+      })
+      if (!replacer) {
+        return null
+      }
+      if (typeof replacer !== "function") {
+        throw new TypeError("replacer must be a function")
+      }
+      const replacements = await replacer(urlInfo, context)
+      if (!replacements || Object.keys(replacements).length === 0) {
+        return null
+      }
+      return replacePlaceholders(urlInfo, replacements)
+    },
+  }
+}
diff --git a/src/helpers/replace_placeholders.js b/src/plugins/placeholders/replace_placeholders.js
similarity index 51%
rename from src/helpers/replace_placeholders.js
rename to src/plugins/placeholders/replace_placeholders.js
index 7c8e3c31ed..fbacd1ec8b 100644
--- a/src/helpers/replace_placeholders.js
+++ b/src/plugins/placeholders/replace_placeholders.js
@@ -1,13 +1,21 @@
 import { createMagicSource } from "@jsenv/sourcemap"
 
-export const replacePlaceholders = (content, replacements) => {
+export const replacePlaceholders = (urlInfo, replacements) => {
+  const content = urlInfo.content
   const magicSource = createMagicSource(content)
   Object.keys(replacements).forEach((key) => {
     let index = content.indexOf(key)
     while (index !== -1) {
       const start = index
       const end = index + key.length
-      magicSource.replace({ start, end, replacement: replacements[key] })
+      magicSource.replace({
+        start,
+        end,
+        replacement:
+          urlInfo.type === "js_classic" || urlInfo.type === "js_module"
+            ? JSON.stringify(replacements[key], null, "  ")
+            : replacements[key],
+      })
       index = content.indexOf(key, end)
     }
   })
diff --git a/src/plugins/url_version/jsenv_plugin_url_version.js b/src/plugins/url_version/jsenv_plugin_url_version.js
index f508fa23ae..1a6d43a456 100644
--- a/src/plugins/url_version/jsenv_plugin_url_version.js
+++ b/src/plugins/url_version/jsenv_plugin_url_version.js
@@ -1,7 +1,7 @@
 export const jsenvPluginUrlVersion = () => {
   return {
     name: "jsenv:url_version",
-    appliesDuring: "*",
+    appliesDuring: "dev",
     redirectUrl: (reference) => {
       // "v" search param goal is to enable long-term cache
       // for server response headers
diff --git a/tests/__internal__/replace_placerholders.test.mjs b/tests/__internal__/replace_placerholders.test.mjs
index 889608635f..81a3bb31af 100644
--- a/tests/__internal__/replace_placerholders.test.mjs
+++ b/tests/__internal__/replace_placerholders.test.mjs
@@ -1,14 +1,17 @@
 import { assert } from "@jsenv/assert"
 
-import { replacePlaceholders } from "@jsenv/core"
+import { replacePlaceholders } from "@jsenv/core/src/plugins/placeholders/replace_placeholders.js"
 
 const result = replacePlaceholders(
-  `const foo = __FOO__
+  {
+    type: "js_module",
+    content: `const foo = __FOO__
 const t = __FOO__
 const bar = __BAR__`,
+  },
   {
-    __FOO__: JSON.stringify("hello"),
-    __BAR__: JSON.stringify("world"),
+    __FOO__: "hello",
+    __BAR__: "world",
   },
 )
 const actual = result.content
diff --git a/tests/dev_and_build/inject_globals/client/main.html b/tests/dev_and_build/inject_globals/client/main.html
new file mode 100644
index 0000000000..92821594a0
--- /dev/null
+++ b/tests/dev_and_build/inject_globals/client/main.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Title</title>
+    <meta charset="utf8" />
+    <link rel="icon" href="data:," />
+  </head>
+  <body>
+    <script>
+      window.resultPromise = new Promise((resolve) => {
+        window.resolveResultPromise = resolve
+      })
+    </script>
+    <script src="./main.js?v=10"></script>
+  </body>
+</html>
diff --git a/tests/dev_and_build/inject_globals/client/main.js b/tests/dev_and_build/inject_globals/client/main.js
new file mode 100644
index 0000000000..5cb59906bf
--- /dev/null
+++ b/tests/dev_and_build/inject_globals/client/main.js
@@ -0,0 +1 @@
+window.resolveResultPromise(window.__DEMO__)
diff --git a/tests/dev_and_build/inject_globals/inject_globals_build.test.mjs b/tests/dev_and_build/inject_globals/inject_globals_build.test.mjs
new file mode 100644
index 0000000000..95fea33677
--- /dev/null
+++ b/tests/dev_and_build/inject_globals/inject_globals_build.test.mjs
@@ -0,0 +1,37 @@
+import { assert } from "@jsenv/assert"
+
+import { build } from "@jsenv/core"
+import { startFileServer } from "@jsenv/core/tests/start_file_server.js"
+import { executeInChromium } from "@jsenv/core/tests/execute_in_chromium.js"
+import { plugins } from "./jsenv_config.mjs"
+
+const test = async (params) => {
+  await build({
+    logLevel: "warn",
+    rootDirectoryUrl: new URL("./client/", import.meta.url),
+    buildDirectoryUrl: new URL("./dist/", import.meta.url),
+    entryPoints: {
+      "./main.html": "main.html",
+    },
+    plugins,
+    minification: false,
+    ...params,
+  })
+  const server = await startFileServer({
+    rootDirectoryUrl: new URL("./dist/", import.meta.url),
+  })
+  const { returnValue } = await executeInChromium({
+    url: `${server.origin}/main.html`,
+    /* eslint-disable no-undef */
+    pageFunction: async () => {
+      return window.resultPromise
+    },
+    /* eslint-enable no-undef */
+  })
+
+  const actual = returnValue
+  const expected = "build"
+  assert({ actual, expected })
+}
+
+await test()
diff --git a/tests/dev_and_build/inject_globals/inject_globals_dev.test.mjs b/tests/dev_and_build/inject_globals/inject_globals_dev.test.mjs
new file mode 100644
index 0000000000..9e73b02066
--- /dev/null
+++ b/tests/dev_and_build/inject_globals/inject_globals_dev.test.mjs
@@ -0,0 +1,29 @@
+import { assert } from "@jsenv/assert"
+
+import { startDevServer } from "@jsenv/core"
+import { executeInChromium } from "@jsenv/core/tests/execute_in_chromium.js"
+import { plugins } from "./jsenv_config.mjs"
+
+const test = async (params) => {
+  const devServer = await startDevServer({
+    logLevel: "warn",
+    rootDirectoryUrl: new URL("./client/", import.meta.url),
+    keepProcessAlive: false,
+    plugins,
+    ...params,
+  })
+  const { returnValue } = await executeInChromium({
+    url: `${devServer.origin}/main.html`,
+    /* eslint-disable no-undef */
+    pageFunction: async () => {
+      return window.resultPromise
+    },
+    /* eslint-enable no-undef */
+  })
+
+  const actual = returnValue
+  const expected = "dev"
+  assert({ actual, expected })
+}
+
+await test()
diff --git a/tests/dev_and_build/inject_globals/jsenv_config.mjs b/tests/dev_and_build/inject_globals/jsenv_config.mjs
new file mode 100644
index 0000000000..7bf687dd58
--- /dev/null
+++ b/tests/dev_and_build/inject_globals/jsenv_config.mjs
@@ -0,0 +1,9 @@
+import { jsenvPluginInjectGlobals } from "@jsenv/core"
+
+export const plugins = [
+  jsenvPluginInjectGlobals({
+    "./main.html": (urlInfo, context) => {
+      return { __DEMO__: context.scenarios.dev ? "dev" : "build" }
+    },
+  }),
+]
diff --git a/tests/dev_and_build/placeholders/client/main.html b/tests/dev_and_build/placeholders/client/main.html
new file mode 100644
index 0000000000..3a8c6d0916
--- /dev/null
+++ b/tests/dev_and_build/placeholders/client/main.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Title</title>
+    <meta charset="utf8" />
+    <link rel="icon" href="data:," />
+  </head>
+  <body>
+    <script>
+      window.resultPromise = new Promise((resolve) => {
+        window.resolveResultPromise = resolve
+      })
+    </script>
+    <script src="./main.js?foo=bar"></script>
+  </body>
+</html>
diff --git a/tests/dev_and_build/placeholders/client/main.js b/tests/dev_and_build/placeholders/client/main.js
new file mode 100644
index 0000000000..efb50845ca
--- /dev/null
+++ b/tests/dev_and_build/placeholders/client/main.js
@@ -0,0 +1,2 @@
+// eslint-disable-next-line no-undef
+window.resolveResultPromise(__DEMO__)
diff --git a/tests/dev_and_build/placeholders/jsenv_config.mjs b/tests/dev_and_build/placeholders/jsenv_config.mjs
new file mode 100644
index 0000000000..a8dcff6c83
--- /dev/null
+++ b/tests/dev_and_build/placeholders/jsenv_config.mjs
@@ -0,0 +1,11 @@
+import { jsenvPluginPlaceholders } from "@jsenv/core"
+
+export const plugins = [
+  jsenvPluginPlaceholders({
+    "./main.js": (urlInfo, context) => {
+      return {
+        __DEMO__: context.scenarios.dev ? "dev" : "build",
+      }
+    },
+  }),
+]
diff --git a/tests/dev_and_build/placeholders/placeholders_build.test.mjs b/tests/dev_and_build/placeholders/placeholders_build.test.mjs
new file mode 100644
index 0000000000..95fea33677
--- /dev/null
+++ b/tests/dev_and_build/placeholders/placeholders_build.test.mjs
@@ -0,0 +1,37 @@
+import { assert } from "@jsenv/assert"
+
+import { build } from "@jsenv/core"
+import { startFileServer } from "@jsenv/core/tests/start_file_server.js"
+import { executeInChromium } from "@jsenv/core/tests/execute_in_chromium.js"
+import { plugins } from "./jsenv_config.mjs"
+
+const test = async (params) => {
+  await build({
+    logLevel: "warn",
+    rootDirectoryUrl: new URL("./client/", import.meta.url),
+    buildDirectoryUrl: new URL("./dist/", import.meta.url),
+    entryPoints: {
+      "./main.html": "main.html",
+    },
+    plugins,
+    minification: false,
+    ...params,
+  })
+  const server = await startFileServer({
+    rootDirectoryUrl: new URL("./dist/", import.meta.url),
+  })
+  const { returnValue } = await executeInChromium({
+    url: `${server.origin}/main.html`,
+    /* eslint-disable no-undef */
+    pageFunction: async () => {
+      return window.resultPromise
+    },
+    /* eslint-enable no-undef */
+  })
+
+  const actual = returnValue
+  const expected = "build"
+  assert({ actual, expected })
+}
+
+await test()
diff --git a/tests/dev_and_build/placeholders/placeholders_dev.test.mjs b/tests/dev_and_build/placeholders/placeholders_dev.test.mjs
new file mode 100644
index 0000000000..9e73b02066
--- /dev/null
+++ b/tests/dev_and_build/placeholders/placeholders_dev.test.mjs
@@ -0,0 +1,29 @@
+import { assert } from "@jsenv/assert"
+
+import { startDevServer } from "@jsenv/core"
+import { executeInChromium } from "@jsenv/core/tests/execute_in_chromium.js"
+import { plugins } from "./jsenv_config.mjs"
+
+const test = async (params) => {
+  const devServer = await startDevServer({
+    logLevel: "warn",
+    rootDirectoryUrl: new URL("./client/", import.meta.url),
+    keepProcessAlive: false,
+    plugins,
+    ...params,
+  })
+  const { returnValue } = await executeInChromium({
+    url: `${devServer.origin}/main.html`,
+    /* eslint-disable no-undef */
+    pageFunction: async () => {
+      return window.resultPromise
+    },
+    /* eslint-enable no-undef */
+  })
+
+  const actual = returnValue
+  const expected = "dev"
+  assert({ actual, expected })
+}
+
+await test()