diff --git a/crawler.js b/crawler.js
index 5ee9f694..56404e71 100644
--- a/crawler.js
+++ b/crawler.js
@@ -353,7 +353,7 @@ export class Crawler {
   }
 
   async setupPage({page, cdp, workerid}) {
-    await page.addInitScript("Object.defineProperty(navigator, \"webdriver\", {value: false});");
+    await this.browser.setupPage({page, cdp});
 
     if (this.params.logging.includes("jserrors")) {
       page.on("console", (msg) => {
@@ -648,8 +648,6 @@ export class Crawler {
   }
 
   async crawl() {
-    this.profileDir = await this.browser.loadProfile(this.params.profile);
-
     if (this.params.healthCheckPort) {
       this.healthChecker = new HealthChecker(this.params.healthCheckPort, this.params.workers);
     }
@@ -731,7 +729,7 @@ export class Crawler {
     }
 
     await this.browser.launch({
-      dataDir: this.profileDir,
+      profileUrl: this.params.profile,
       headless: this.params.headless,
       emulateDevice: this.emulateDevice,
       chromeOptions: {
diff --git a/create-login-profile.js b/create-login-profile.js
index 677cb25e..6f89192a 100755
--- a/create-login-profile.js
+++ b/create-login-profile.js
@@ -199,7 +199,8 @@ async function main() {
   await cdp.send("Network.setCacheDisabled", {cacheDisabled: true});
 
   if (!params.automated) {
-    await page.addInitScript("Object.defineProperty(navigator, \"webdriver\", {value: false});");
+    await browser.setupPage({page, cdp});
+
     // for testing, inject browsertrix-behaviors
     await page.addInitScript(behaviors + ";\nself.__bx_behaviors.init();");
   }
diff --git a/util/browser.js b/util/browser.js
index c7b1b692..3cf439ea 100644
--- a/util/browser.js
+++ b/util/browser.js
@@ -11,8 +11,6 @@ import { initStorage } from "./storage.js";
 
 import { chromium } from "playwright-core";
 
-const profileDir = fs.mkdtempSync(path.join(os.tmpdir(), "profile-"));
-
 
 // ==================================================================
 export class Browser
@@ -22,16 +20,22 @@ export class Browser
 
     this.firstPage = null;
     this.firstCDP = null;
+
+    this.profileDir = fs.mkdtempSync(path.join(os.tmpdir(), "profile-"));
+    this.customProfile = false;
   }
 
-  async launch({dataDir, chromeOptions, signals = false, headless = false, emulateDevice = {viewport: null}} = {}) {
+  async launch({profileUrl, chromeOptions, signals = false, headless = false, emulateDevice = {viewport: null}} = {}) {
     if (this.context) {
       logger.warn("Context already inited", {}, "context");
       return this.context;
     }
 
+    if (profileUrl) {
+      this.customProfile = await this.loadProfile(profileUrl);
+    }
+
     const args = this.chromeArgs(chromeOptions);
-    const userDataDir = dataDir || profileDir;
 
     const launchOpts = {
       ...emulateDevice,
@@ -43,10 +47,10 @@ export class Browser
       handleSIGHUP: signals,
       handleSIGINT: signals,
       handleSIGTERM: signals,
-      serviceWorkers: dataDir ? "block" : "allow",
+      serviceWorkers: "allow"
     };
 
-    this.context = await chromium.launchPersistentContext(userDataDir, launchOpts);
+    this.context = await chromium.launchPersistentContext(this.profileDir, launchOpts);
 
     if (this.context.pages()) {
       this.firstPage = this.context.pages()[0];
@@ -65,6 +69,16 @@ export class Browser
     }
   }
 
+  async setupPage({page, cdp}) {
+    await page.addInitScript("Object.defineProperty(navigator, \"webdriver\", {value: false});");
+
+    if (this.customProfile) {
+      logger.info("Disabling Service Workers for profile", {}, "browser");
+
+      await cdp.send("Network.setBypassServiceWorker", {bypass: true});
+    }
+  }
+
   async getFirstPageWithCDP() {
     return {page: this.firstPage, cdp: this.firstCDP};
   }
@@ -126,17 +140,18 @@ export class Browser
 
     if (profileFilename) {
       try {
-        child_process.execSync("tar xvfz " + profileFilename, {cwd: profileDir});
+        child_process.execSync("tar xvfz " + profileFilename, {cwd: this.profileDir});
+        return true;
       } catch (e) {
         logger.error(`Profile filename ${profileFilename} not a valid tar.gz`);
       }
     }
 
-    return profileDir;
+    return false;
   }
 
   saveProfile(profileFilename) {
-    child_process.execFileSync("tar", ["cvfz", profileFilename, "./"], {cwd: profileDir});
+    child_process.execFileSync("tar", ["cvfz", profileFilename, "./"], {cwd: this.profileDir});
   }
 
   chromeArgs({proxy=true, userAgent=null, extraArgs=[]} = {}) {
diff --git a/util/screenshots.js b/util/screenshots.js
index 3bcfa000..09b34bc2 100644
--- a/util/screenshots.js
+++ b/util/screenshots.js
@@ -21,7 +21,7 @@ export const screenshotTypes = {
   "fullPage": {
     type: "png",
     omitBackground: true,
-    fullPage: false
+    fullPage: true
   }
 };