diff --git a/lighthouse-cli/cli-flags.js b/lighthouse-cli/cli-flags.js
index 61bcdccfcc6f..f1d2ee963fee 100644
--- a/lighthouse-cli/cli-flags.js
+++ b/lighthouse-cli/cli-flags.js
@@ -105,6 +105,7 @@ function getFlags(manualArgv) {
         'skip-audits': 'Run everything except these audits',
         'plugins': 'Run the specified plugins',
         'print-config': 'Print the normalized config for the given config and options, then exit.',
+        'ignore-https-errors': 'Whether to ignore HTTPS errors during navigation. Defaults to false',
       })
       // set aliases
       .alias({'gather-mode': 'G', 'audit-mode': 'A'})
@@ -123,7 +124,7 @@ function getFlags(manualArgv) {
       // boolean values
       .boolean([
         'disable-storage-reset', 'save-assets', 'list-all-audits',
-        'list-trace-categories', 'view', 'verbose', 'quiet', 'help', 'print-config',
+        'list-trace-categories', 'view', 'verbose', 'quiet', 'help', 'print-config', 'ignore-https-errors',
       ])
       .choices('output', printer.getValidOutputOptions())
       .choices('emulated-form-factor', ['mobile', 'desktop', 'none'])
diff --git a/lighthouse-cli/test/cli/__snapshots__/index-test.js.snap b/lighthouse-cli/test/cli/__snapshots__/index-test.js.snap
index 3e2964fdfbe9..e7ecf36d61ff 100644
--- a/lighthouse-cli/test/cli/__snapshots__/index-test.js.snap
+++ b/lighthouse-cli/test/cli/__snapshots__/index-test.js.snap
@@ -1203,6 +1203,7 @@ Object {
     "emulatedFormFactor": "mobile",
     "extraHeaders": null,
     "gatherMode": false,
+    "ignoreHttpsErrors": false,
     "locale": "en-US",
     "maxWaitForFcp": 15000,
     "maxWaitForLoad": 45000,
@@ -1332,6 +1333,7 @@ Object {
     "emulatedFormFactor": "mobile",
     "extraHeaders": null,
     "gatherMode": false,
+    "ignoreHttpsErrors": false,
     "locale": "en-US",
     "maxWaitForFcp": 15000,
     "maxWaitForLoad": 45000,
diff --git a/lighthouse-core/config/constants.js b/lighthouse-core/config/constants.js
index 331975751ece..14da70deef3d 100644
--- a/lighthouse-core/config/constants.js
+++ b/lighthouse-core/config/constants.js
@@ -63,6 +63,7 @@ const defaultSettings = {
   onlyAudits: null,
   onlyCategories: null,
   skipAudits: null,
+  ignoreHttpsErrors: false,
 };
 
 /** @type {LH.Config.Pass} */
diff --git a/lighthouse-core/gather/driver.js b/lighthouse-core/gather/driver.js
index 61e97ff8ea0e..f08e0a0824fa 100644
--- a/lighthouse-core/gather/driver.js
+++ b/lighthouse-core/gather/driver.js
@@ -658,6 +658,22 @@ class Driver {
     return {promise: Promise.resolve(), cancel() {}};
   }
 
+  /**
+   * Returns a promise that never resolves.
+   * Used for placeholder conditions that we don't want race with, but still want to satisfy the same
+   * interface.
+   * @return {{promise: Promise<void>, cancel: function(): void}}
+   */
+  _waitForever() {
+    let cancel = () => {};
+    return {
+      promise: new Promise(resolve => {
+        cancel = resolve;
+      }),
+      cancel,
+    };
+  }
+
   /**
    * Returns a promise that resolve when a frame has been navigated.
    * Used for detecting that our about:blank reset has been completed.
@@ -977,11 +993,12 @@ class Driver {
    * @param {number} cpuQuietThresholdMs
    * @param {number} maxWaitForLoadedMs
    * @param {number=} maxWaitForFCPMs
+   * @param {boolean} ignoreHttpsErrors
    * @return {Promise<void>}
    * @private
    */
   async _waitForFullyLoaded(pauseAfterLoadMs, networkQuietThresholdMs, cpuQuietThresholdMs,
-      maxWaitForLoadedMs, maxWaitForFCPMs) {
+      maxWaitForLoadedMs, maxWaitForFCPMs, ignoreHttpsErrors) {
     /** @type {NodeJS.Timer|undefined} */
     let maxTimeoutHandle;
 
@@ -994,10 +1011,15 @@ class Driver {
     // CPU listener. Resolves when the CPU has been idle for cpuQuietThresholdMs after network idle.
     let waitForCPUIdle = this._waitForNothing();
 
-    const monitorForInsecureState = this._monitorForInsecureState();
+    /** @type {{promise: Promise<string | void>, cancel: () => void}} */
+    const monitorForInsecureState = ignoreHttpsErrors
+      ? this._waitForever()
+      : this._monitorForInsecureState();
     const securityCheckPromise = monitorForInsecureState.promise.then(securityMessages => {
       return function() {
-        throw new LHError(LHError.errors.INSECURE_DOCUMENT_REQUEST, {securityMessages});
+        throw new LHError(LHError.errors.INSECURE_DOCUMENT_REQUEST, {
+          securityMessages: securityMessages || '',
+        });
       };
     });
 
@@ -1136,7 +1158,7 @@ class Driver {
    * possible workaround.
    * Resolves on the url of the loaded page, taking into account any redirects.
    * @param {string} url
-   * @param {{waitForFCP?: boolean, waitForLoad?: boolean, waitForNavigated?: boolean, passContext?: LH.Gatherer.PassContext}} options
+   * @param {{waitForFCP?: boolean, waitForLoad?: boolean, waitForNavigated?: boolean, passContext?: LH.Gatherer.PassContext, ignoreHttpsErrors?: boolean}} options
    * @return {Promise<string>}
    */
   async gotoURL(url, options = {}) {
@@ -1145,6 +1167,7 @@ class Driver {
     const waitForLoad = options.waitForLoad || false;
     const passContext = /** @type {Partial<LH.Gatherer.PassContext>} */ (options.passContext || {});
     const disableJS = passContext.disableJavaScript || false;
+    const ignoreHttpsErrors = options.ignoreHttpsErrors || false;
 
     if (waitForNavigated && (waitForFCP || waitForLoad)) {
       throw new Error('Cannot use both waitForNavigated and another event, pick just one');
@@ -1184,7 +1207,7 @@ class Driver {
 
       if (!waitForFCP) maxFCPMs = undefined;
       await this._waitForFullyLoaded(pauseAfterLoadMs, networkQuietThresholdMs, cpuQuietThresholdMs,
-          maxWaitMs, maxFCPMs);
+          maxWaitMs, maxFCPMs, ignoreHttpsErrors);
     }
 
     // Bring `Page.navigate` errors back into the promise chain. See https://github.com/GoogleChrome/lighthouse/pull/6739.
@@ -1565,6 +1588,24 @@ class Driver {
 
     await this.sendCommand('Page.enable');
   }
+
+  /**
+   * Set chrome security settings to ignore certificate errors.
+   * @return {Promise<void>}
+   */
+  async setIgnoreHttpsErrors() {
+    // the devtools protocol also has an experimental Security.setIgnoreCertificateErrors
+    //   https://chromedevtools.github.io/devtools-protocol/tot/Security#method-setIgnoreCertificateErrors
+    // It can be used instead of the following when it becomes stable.
+    this.on('Security.certificateError', event => {
+      this.sendCommand('Security.handleCertificateError', {
+        eventId: event.eventId,
+        action: 'continue',
+      }).catch(err => log.warn('Driver', err));
+    });
+    await this.sendCommand('Security.enable');
+    await this.sendCommand('Security.setOverrideCertificateErrors', {override: true});
+  }
 }
 
 module.exports = Driver;
diff --git a/lighthouse-core/gather/gather-runner.js b/lighthouse-core/gather/gather-runner.js
index 033a9a8bf317..8af369db32a9 100644
--- a/lighthouse-core/gather/gather-runner.js
+++ b/lighthouse-core/gather/gather-runner.js
@@ -92,6 +92,7 @@ class GatherRunner {
     const finalUrl = await driver.gotoURL(passContext.url, {
       waitForFCP: passContext.passConfig.recordTrace,
       waitForLoad: true,
+      ignoreHttpsErrors: passContext.settings.ignoreHttpsErrors,
       passContext,
     });
     passContext.url = finalUrl;
@@ -106,12 +107,14 @@ class GatherRunner {
     const status = {msg: 'Initializing…', id: 'lh:gather:setupDriver'};
     log.time(status);
     const resetStorage = !options.settings.disableStorageReset;
+    const ignoreHttpsErrors = options.settings.ignoreHttpsErrors;
     await driver.assertNoSameOriginServiceWorkerClients(options.requestedUrl);
     await driver.beginEmulation(options.settings);
     await driver.enableRuntimeEvents();
     await driver.cacheNatives();
     await driver.registerPerformanceObserver();
     await driver.dismissJavaScriptDialogs();
+    if (ignoreHttpsErrors) await driver.setIgnoreHttpsErrors();
     if (resetStorage) await driver.clearDataForOrigin(options.requestedUrl);
     log.timeEnd(status);
   }
diff --git a/lighthouse-core/test/results/sample_v2.json b/lighthouse-core/test/results/sample_v2.json
index b9e493af335c..e7c9117c0392 100644
--- a/lighthouse-core/test/results/sample_v2.json
+++ b/lighthouse-core/test/results/sample_v2.json
@@ -2970,7 +2970,8 @@
     "precomputedLanternData": null,
     "onlyAudits": null,
     "onlyCategories": null,
-    "skipAudits": null
+    "skipAudits": null,
+    "ignoreHttpsErrors": false
   },
   "categories": {
     "performance": {
diff --git a/types/externs.d.ts b/types/externs.d.ts
index 8de82bbb0252..f2832090055a 100644
--- a/types/externs.d.ts
+++ b/types/externs.d.ts
@@ -119,6 +119,8 @@ declare global {
       channel?: string
       /** Precomputed lantern estimates to use instead of observed analysis. */
       precomputedLanternData?: PrecomputedLanternData | null;
+      /** Ignore HTTPS errors during navigation */
+      ignoreHttpsErrors?: boolean;
     }
 
     /**