diff --git a/.gitignore b/.gitignore
index d4b907e..de4b5b2 100755
--- a/.gitignore
+++ b/.gitignore
@@ -35,6 +35,4 @@ coverage
 .env
 .envrc
 stats.html
-src/node.mjs
-lightweight/index.js
-lightweight/index-bundled.d.ts
+dist/index.js
diff --git a/index.html b/index.html
index f61bccc..6fb9caf 100644
--- a/index.html
+++ b/index.html
@@ -58,7 +58,7 @@
     }
   </script>
   <script type="module">
-    import microlink from './lightweight/index.js'
+    import microlink from './dist/index.js'
 
     function getBrowser() {
         var ua=navigator.userAgent,tem,M=ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
diff --git a/lightweight/package.json b/lightweight/package.json
deleted file mode 100644
index 73be0af..0000000
--- a/lightweight/package.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "main": "index.js",
-  "type": "module",
-  "types": "index-bundled.d.ts"
-}
diff --git a/package.json b/package.json
index 66e8ba2..247f3a8 100644
--- a/package.json
+++ b/package.json
@@ -3,10 +3,12 @@
   "description": "Browser functions as Service. Interacting with browser pages, remotely.",
   "homepage": "https://function.microlink.io",
   "version": "0.2.2",
-  "types": "lightweight/index.d.ts",
+  "types": "src/index.d.ts",
   "exports": {
-    "require": "./src/node.js",
-    "default": "./lightweight/index.js"
+    "types": "./src/index.d.ts",
+    "require": "./src/index.js",
+    "import": "./src/index.mjs",
+    "default": "./src/index.mjs"
   },
   "author": {
     "email": "josefrancisco.verdu@gmail.com",
@@ -31,8 +33,8 @@
     "serverless"
   ],
   "dependencies": {
-    "@microlink/mql": "~0.14.0",
-    "base64-url": "~2.3.3"
+    "@microlink/mql": "~0.15.1",
+    "lz-ts": "~1.1.2"
   },
   "devDependencies": {
     "@commitlint/cli": "latest",
@@ -54,26 +56,22 @@
     "puppeteer-core": "latest",
     "rollup": "latest",
     "rollup-plugin-filesize": "latest",
-    "rollup-plugin-rewrite": "latest",
-    "rollup-plugin-visualizer": "latest",
     "simple-git-hooks": "latest",
     "standard": "latest",
     "standard-version": "latest",
-    "stream-to-promise": "latest",
+    "tinyspawn": "latest",
     "tsd": "latest"
   },
   "engines": {
     "node": ">= 18"
   },
   "files": [
-    "lightweight",
-    "src/factory.js",
-    "src/node.js"
+    "src"
   ],
   "scripts": {
     "build": "rollup -c rollup.config.js --bundleConfigAsCjs",
     "clean": "rm -rf node_modules",
-    "clean:build": "rm -rf lightweight/index.js",
+    "clean:build": "rm -rf dist/index.js",
     "contributors": "(npx git-authors-cli && npx finepack && git add package.json && git commit -m 'build: contributors' --no-verify) || true",
     "dev": "npm run build -- -w",
     "lint": "standard && tsd",
@@ -88,10 +86,6 @@
   },
   "license": "MIT",
   "ava": {
-    "files": [
-      "test/**/*",
-      "!test/clients.mjs"
-    ],
     "timeout": "1m"
   },
   "commitlint": {
@@ -119,11 +113,18 @@
   },
   "standard": {
     "ignore": [
-      "lightweight/index.js",
-      "src/node.mjs"
+      "dist"
     ]
   },
   "tsd": {
+    "compilerOptions": {
+      "baseUrl": ".",
+      "paths": {
+        "@microlink/function": [
+          "./src/index.d.ts"
+        ]
+      }
+    },
     "directory": "test"
   }
 }
diff --git a/rollup.config.js b/rollup.config.js
index af4d40b..972f479 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -1,5 +1,4 @@
 import nodeResolve from '@rollup/plugin-node-resolve'
-import { visualizer } from 'rollup-plugin-visualizer'
 import commonjs from '@rollup/plugin-commonjs'
 import filesize from 'rollup-plugin-filesize'
 import replace from '@rollup/plugin-replace'
@@ -23,24 +22,22 @@ const build = ({ input, output, plugins = [], compress }) => {
             comments: false
           }
         }),
-      filesize(),
-      visualizer()
-    ]
+      filesize()
+    ].filter(Boolean)
   }
 }
 
 const builds = [
-  /* This build is just for testing using ESM interface */
-  build({
-    input: './src/node.js',
-    output: { file: 'src/node.mjs', format: 'es' },
-    plugins: [commonjs()]
-  }),
   build({
-    compress: true,
-    input: 'src/lightweight.mjs',
-    output: { file: 'lightweight/index.js', format: 'es' },
-    plugins: [nodeResolve()]
+    compress: false,
+    input: 'src/index.js',
+    output: { file: 'dist/index.js', format: 'es' },
+    plugins: [
+      nodeResolve({
+        mainFields: ['browser', 'module', 'main']
+      }),
+      commonjs({ strictRequires: 'auto' })
+    ]
   })
 ]
 
diff --git a/lightweight/index.d.ts b/src/index.d.ts
similarity index 100%
rename from lightweight/index.d.ts
rename to src/index.d.ts
diff --git a/src/index.js b/src/index.js
new file mode 100644
index 0000000..6aaf02b
--- /dev/null
+++ b/src/index.js
@@ -0,0 +1,41 @@
+'use strict'
+
+const mql = require('@microlink/mql')
+
+let toCompress
+
+try {
+  const { promisify } = require('util')
+  const { brotliCompress } = require('zlib')
+  const compress = promisify(brotliCompress)
+  toCompress = async code =>
+    `br#${(await compress(code.toString())).toString('base64url')}`
+} catch {
+  const { compressToURI } = require('lz-ts')
+  toCompress = code => Promise.resolve(`lz#${compressToURI(code.toString())}`)
+}
+
+const fn = (code, mqlOpts, gotOpts) => {
+  const compressed = toCompress(code)
+
+  return async (url, opts) => {
+    const { data } = await mql(
+      url,
+      {
+        function: await compressed,
+        meta: false,
+        ...mqlOpts,
+        ...opts
+      },
+      gotOpts
+    )
+
+    return data.function
+  }
+}
+
+fn.compress = toCompress
+fn.mql = mql
+fn.version = require('../package.json').version
+
+module.exports = fn
diff --git a/src/index.mjs b/src/index.mjs
new file mode 100644
index 0000000..c63889e
--- /dev/null
+++ b/src/index.mjs
@@ -0,0 +1,10 @@
+import { createRequire } from 'module'
+
+const require = createRequire(import.meta.url)
+const fn = require('./index.js')
+
+export const compress = fn.compress
+export const mql = fn.mql
+export const version = fn.version
+
+export default fn
diff --git a/src/lightweight.mjs b/src/lightweight.mjs
deleted file mode 100644
index 3a5a2f3..0000000
--- a/src/lightweight.mjs
+++ /dev/null
@@ -1,22 +0,0 @@
-import mql from '@microlink/mql'
-
-const fn = (code, mqlOpts, gotOpts) => async (url, opts) => {
-  const { data } = await mql(
-    url,
-    {
-      function: code.toString(),
-      meta: false,
-      ...mqlOpts,
-      ...opts
-    },
-    gotOpts
-  )
-
-  return data.function
-}
-
-fn.mql = mql
-fn.render = mql.render
-fn.version = require('../package.json').version
-
-export default fn
diff --git a/src/node.js b/src/node.js
deleted file mode 100644
index c6607ed..0000000
--- a/src/node.js
+++ /dev/null
@@ -1,39 +0,0 @@
-'use strict'
-
-const { escape } = require('base64-url')
-const { promisify } = require('util')
-const mql = require('@microlink/mql')
-const zlib = require('zlib')
-
-const brotliCompress = promisify(zlib.brotliCompress)
-
-const toCompress = code =>
-  brotliCompress(code.toString()).then(
-    data => `br#${escape(data.toString('base64'))}`
-  )
-
-const fn = (code, mqlOpts, gotOpts) => {
-  const compress = toCompress(code)
-
-  return async (url, opts) => {
-    const { data } = await mql(
-      url,
-      {
-        function: await compress,
-        meta: false,
-        ping: false,
-        ...mqlOpts,
-        ...opts
-      },
-      gotOpts
-    )
-
-    return data.function
-  }
-}
-
-fn.mql = mql
-fn.render = mql.render
-fn.version = require('../package.json').version
-
-module.exports = fn
diff --git a/test/clients.mjs b/test/clients.mjs
deleted file mode 100644
index f4ca6ff..0000000
--- a/test/clients.mjs
+++ /dev/null
@@ -1,7 +0,0 @@
-import ligtweight from '../lightweight/index.js'
-import node from '../src/node.mjs'
-
-export default [
-  { constructor: node, target: 'node' },
-  { constructor: ligtweight, target: 'lightweight' }
-]
diff --git a/test/compress.mjs b/test/compress.mjs
new file mode 100644
index 0000000..19e389a
--- /dev/null
+++ b/test/compress.mjs
@@ -0,0 +1,49 @@
+import { brotliDecompress } from 'zlib'
+import { createRequire } from 'module'
+import { promisify } from 'util'
+import test from 'ava'
+
+const require = createRequire(import.meta.url)
+const { decompressFromURI, compressToURI } = require('lz-ts')
+const fn = require('@microlink/function')
+
+const decompress = promisify(brotliDecompress)
+const code = '({ page }) => page.title()'
+
+test('compress is exported', t => {
+  t.is(typeof fn.compress, 'function')
+})
+
+test('node.js selects brotli compression', async t => {
+  const compressed = await fn.compress(code)
+  t.true(compressed.startsWith('br#'))
+})
+
+test('brotli roundtrip produces original code', async t => {
+  const compressed = await fn.compress(code)
+  const payload = compressed.slice(3)
+  const decompressed = (await decompress(Buffer.from(payload, 'base64url'))).toString()
+  t.is(decompressed, code)
+})
+
+test('falls back to lz-string when zlib is unavailable', async t => {
+  const { execFileSync } = await import('child_process')
+  const result = execFileSync(process.execPath, ['-e', `
+    const Module = require('module')
+    const originalLoad = Module._load
+    Module._load = function (id, parent, isMain) {
+      if (id === 'zlib') throw new Error('not available')
+      return originalLoad(id, parent, isMain)
+    }
+    const fn = require(${JSON.stringify(require.resolve('@microlink/function'))})
+    fn.compress('({ page }) => page.title()').then(r => process.stdout.write(r))
+  `], { encoding: 'utf8' })
+  t.true(result.startsWith('lz#'))
+})
+
+test('lz roundtrip produces original code', t => {
+  const compressed = `lz#${compressToURI(code)}`
+  t.true(compressed.startsWith('lz#'))
+  const payload = compressed.slice(3)
+  t.is(decompressFromURI(payload), code)
+})
diff --git a/test/index.mjs b/test/index.mjs
index 9af7844..688f982 100644
--- a/test/index.mjs
+++ b/test/index.mjs
@@ -1,52 +1,42 @@
 'use strict'
 
+import microlink from '@microlink/function'
 import test from 'ava'
 
-import clients from './clients.mjs'
+const ENDPOINT = 'http://localhost:3000'
 
-clients.forEach(({ constructor: microlink, target }) => {
-  test(`${target} » interact with the page`, async t => {
-    const getTitle = ({ page }) => page.title()
+test('interact with the page', async t => {
+  const getTitle = ({ page }) => page.title()
 
-    const myFn = microlink(getTitle)
+  const myFn = microlink(getTitle, { endpoint: ENDPOINT })
 
-    const result = await myFn('https://example.com', { force: true })
+  const result = await myFn('https://example.com', { force: true })
 
-    t.deepEqual(result, {
-      isFulfilled: true,
-      isRejected: false,
-      value: 'Example Domain'
-    })
-  })
-
-  test(`${target} » interact with the response`, async t => {
-    const getTitle = ({ response }) => response.status()
+  t.true(result.isFulfilled)
+  t.is(result.value, 'Example Domain')
+})
 
-    const myFn = microlink(getTitle)
+test.only('interact with the response', async t => {
+  const getTitle = ({ response }) => response.status()
 
-    const result = await myFn('https://example.com', { force: true })
+  const myFn = microlink(getTitle, { endpoint: ENDPOINT })
 
-    t.deepEqual(result, {
-      isFulfilled: true,
-      isRejected: false,
-      value: 200
-    })
-  })
+  const result = await myFn('https://example.com', { force: true })
 
-  test(`${target} » interact with user specific parameters`, async t => {
-    const getTitle = ({ greetings }) => greetings
+  t.true(result.isFulfilled)
+  t.is(result.value, 200)
+})
 
-    const myFn = microlink(getTitle)
+test('interact with user specific parameters', async t => {
+  const getTitle = ({ greetings }) => greetings
 
-    const result = await myFn('https://example.com', {
-      greetings: 'hello world',
-      force: true
-    })
+  const myFn = microlink(getTitle, { endpoint: ENDPOINT })
 
-    t.deepEqual(result, {
-      isFulfilled: true,
-      isRejected: false,
-      value: 'hello world'
-    })
+  const result = await myFn('https://example.com', {
+    greetings: 'hello world',
+    force: true
   })
+
+  t.true(result.isFulfilled)
+  t.is(result.value, 'hello world')
 })
diff --git a/test/lightweight.test-d.ts b/test/index.test-d.ts
similarity index 91%
rename from test/lightweight.test-d.ts
rename to test/index.test-d.ts
index 0366d00..72b0d69 100644
--- a/test/lightweight.test-d.ts
+++ b/test/index.test-d.ts
@@ -1,4 +1,4 @@
-import microlinkFn from '../lightweight'
+import microlinkFn from '@microlink/function'
 
 /** definition */