diff --git a/lighthouse-core/gather/driver.js b/lighthouse-core/gather/driver.js
index b800c9adfd12..d0d8176f7677 100644
--- a/lighthouse-core/gather/driver.js
+++ b/lighthouse-core/gather/driver.js
@@ -295,7 +295,7 @@ class Driver {
    * @param {string[]} parentSessionIds The list of session ids of the parents from youngest to oldest.
    */
   async _handleReceivedMessageFromTarget(event, parentSessionIds) {
-    const {sessionId, message} = event;
+    const {targetId, sessionId, message} = event;
     /** @type {LH.Protocol.RawMessage} */
     const protocolMessage = JSON.parse(message);
 
@@ -317,7 +317,7 @@ class Driver {
     }
 
     if (protocolMessage.method.startsWith('Network')) {
-      this._handleProtocolEvent(protocolMessage);
+      this._handleProtocolEvent({...protocolMessage, source: {targetId, sessionId}});
     }
   }
 
diff --git a/lighthouse-core/gather/gatherers/dobetterweb/optimized-images.js b/lighthouse-core/gather/gatherers/dobetterweb/optimized-images.js
index 0a96d98b3c04..a9a533cb5e92 100644
--- a/lighthouse-core/gather/gatherers/dobetterweb/optimized-images.js
+++ b/lighthouse-core/gather/gatherers/dobetterweb/optimized-images.js
@@ -45,7 +45,8 @@ class OptimizedImages extends Gatherer {
     /** @type {Set<string>} */
     const seenUrls = new Set();
     return networkRecords.reduce((prev, record) => {
-      if (seenUrls.has(record.url) || !record.finished) {
+      // Skip records that we've seen before, never finished, or came from OOPIFs.
+      if (seenUrls.has(record.url) || !record.finished || record.sessionId) {
         return prev;
       }
 
diff --git a/lighthouse-core/gather/gatherers/dobetterweb/response-compression.js b/lighthouse-core/gather/gatherers/dobetterweb/response-compression.js
index 235845617a4e..ed58dcb2698f 100644
--- a/lighthouse-core/gather/gatherers/dobetterweb/response-compression.js
+++ b/lighthouse-core/gather/gatherers/dobetterweb/response-compression.js
@@ -40,6 +40,9 @@ class ResponseCompression extends Gatherer {
     const unoptimizedResponses = [];
 
     networkRecords.forEach(record => {
+      // Ignore records from OOPIFs
+      if (record.sessionId) return;
+
       const mimeType = record.mimeType;
       const resourceType = record.resourceType || NetworkRequest.TYPES.Other;
       const resourceSize = record.resourceSize;
diff --git a/lighthouse-core/gather/gatherers/scripts.js b/lighthouse-core/gather/gatherers/scripts.js
index 537ed29c469d..fa0969fb44aa 100644
--- a/lighthouse-core/gather/gatherers/scripts.js
+++ b/lighthouse-core/gather/gatherers/scripts.js
@@ -58,6 +58,9 @@ class Scripts extends Gatherer {
     }
 
     const scriptRecords = loadData.networkRecords
+      // Ignore records from OOPIFs
+      .filter(record => !record.sessionId)
+      // Only get the content of script requests
       .filter(record => record.resourceType === NetworkRequest.TYPES.Script);
 
     for (const record of scriptRecords) {
diff --git a/lighthouse-core/lib/network-recorder.js b/lighthouse-core/lib/network-recorder.js
index f0f05e64a5fb..070a3357f178 100644
--- a/lighthouse-core/lib/network-recorder.js
+++ b/lighthouse-core/lib/network-recorder.js
@@ -196,10 +196,11 @@ class NetworkRecorder extends EventEmitter {
   // DevTools SDK network layer.
 
   /**
-   * @param {LH.Crdp.Network.RequestWillBeSentEvent} data
+   * @param {{params: LH.Crdp.Network.RequestWillBeSentEvent, source?: LH.Protocol.RawSource}} event
    */
-  onRequestWillBeSent(data) {
-    const originalRequest = this._findRealRequest(data.requestId);
+  onRequestWillBeSent(event) {
+    const data = event.params;
+    const originalRequest = this._findRealRequestAndSetSource(data.requestId, event.source);
     // This is a simple new request, create the NetworkRequest object and finish.
     if (!originalRequest) {
       const request = new NetworkRequest();
@@ -235,57 +236,63 @@ class NetworkRecorder extends EventEmitter {
   }
 
   /**
-   * @param {LH.Crdp.Network.RequestServedFromCacheEvent} data
+   * @param {{params: LH.Crdp.Network.RequestServedFromCacheEvent, source?: LH.Protocol.RawSource}} event
    */
-  onRequestServedFromCache(data) {
-    const request = this._findRealRequest(data.requestId);
+  onRequestServedFromCache(event) {
+    const data = event.params;
+    const request = this._findRealRequestAndSetSource(data.requestId, event.source);
     if (!request) return;
     request.onRequestServedFromCache();
   }
 
   /**
-   * @param {LH.Crdp.Network.ResponseReceivedEvent} data
+   * @param {{params: LH.Crdp.Network.ResponseReceivedEvent, source?: LH.Protocol.RawSource}} event
    */
-  onResponseReceived(data) {
-    const request = this._findRealRequest(data.requestId);
+  onResponseReceived(event) {
+    const data = event.params;
+    const request = this._findRealRequestAndSetSource(data.requestId, event.source);
     if (!request) return;
     request.onResponseReceived(data);
   }
 
   /**
-   * @param {LH.Crdp.Network.DataReceivedEvent} data
+   * @param {{params: LH.Crdp.Network.DataReceivedEvent, source?: LH.Protocol.RawSource}} event
    */
-  onDataReceived(data) {
-    const request = this._findRealRequest(data.requestId);
+  onDataReceived(event) {
+    const data = event.params;
+    const request = this._findRealRequestAndSetSource(data.requestId, event.source);
     if (!request) return;
     request.onDataReceived(data);
   }
 
   /**
-   * @param {LH.Crdp.Network.LoadingFinishedEvent} data
+   * @param {{params: LH.Crdp.Network.LoadingFinishedEvent, source?: LH.Protocol.RawSource}} event
    */
-  onLoadingFinished(data) {
-    const request = this._findRealRequest(data.requestId);
+  onLoadingFinished(event) {
+    const data = event.params;
+    const request = this._findRealRequestAndSetSource(data.requestId, event.source);
     if (!request) return;
     request.onLoadingFinished(data);
     this.onRequestFinished(request);
   }
 
   /**
-   * @param {LH.Crdp.Network.LoadingFailedEvent} data
+   * @param {{params: LH.Crdp.Network.LoadingFailedEvent, source?: LH.Protocol.RawSource}} event
    */
-  onLoadingFailed(data) {
-    const request = this._findRealRequest(data.requestId);
+  onLoadingFailed(event) {
+    const data = event.params;
+    const request = this._findRealRequestAndSetSource(data.requestId, event.source);
     if (!request) return;
     request.onLoadingFailed(data);
     this.onRequestFinished(request);
   }
 
   /**
-   * @param {LH.Crdp.Network.ResourceChangedPriorityEvent} data
+   * @param {{params: LH.Crdp.Network.ResourceChangedPriorityEvent, source?: LH.Protocol.RawSource}} event
    */
-  onResourceChangedPriority(data) {
-    const request = this._findRealRequest(data.requestId);
+  onResourceChangedPriority(event) {
+    const data = event.params;
+    const request = this._findRealRequestAndSetSource(data.requestId, event.source);
     if (!request) return;
     request.onResourceChangedPriority(data);
   }
@@ -296,13 +303,13 @@ class NetworkRecorder extends EventEmitter {
    */
   dispatch(event) {
     switch (event.method) {
-      case 'Network.requestWillBeSent': return this.onRequestWillBeSent(event.params);
-      case 'Network.requestServedFromCache': return this.onRequestServedFromCache(event.params);
-      case 'Network.responseReceived': return this.onResponseReceived(event.params);
-      case 'Network.dataReceived': return this.onDataReceived(event.params);
-      case 'Network.loadingFinished': return this.onLoadingFinished(event.params);
-      case 'Network.loadingFailed': return this.onLoadingFailed(event.params);
-      case 'Network.resourceChangedPriority': return this.onResourceChangedPriority(event.params);
+      case 'Network.requestWillBeSent': return this.onRequestWillBeSent(event);
+      case 'Network.requestServedFromCache': return this.onRequestServedFromCache(event);
+      case 'Network.responseReceived': return this.onResponseReceived(event);
+      case 'Network.dataReceived': return this.onDataReceived(event);
+      case 'Network.loadingFinished': return this.onLoadingFinished(event);
+      case 'Network.loadingFailed': return this.onLoadingFailed(event);
+      case 'Network.resourceChangedPriority': return this.onResourceChangedPriority(event);
       default: return;
     }
   }
@@ -314,9 +321,10 @@ class NetworkRecorder extends EventEmitter {
    * message is referring.
    *
    * @param {string} requestId
+   * @param {LH.Protocol.RawSource|undefined} source
    * @return {NetworkRequest|undefined}
    */
-  _findRealRequest(requestId) {
+  _findRealRequestAndSetSource(requestId, source) {
     let request = this._recordsById.get(requestId);
     if (!request || !request.isValid) return undefined;
 
@@ -324,6 +332,7 @@ class NetworkRecorder extends EventEmitter {
       request = request.redirectDestination;
     }
 
+    request.setSource(source);
     return request;
   }
 
diff --git a/lighthouse-core/lib/network-request.js b/lighthouse-core/lib/network-request.js
index 687924e0bc90..bfd64351ed35 100644
--- a/lighthouse-core/lib/network-request.js
+++ b/lighthouse-core/lib/network-request.js
@@ -103,6 +103,18 @@ module.exports = class NetworkRequest {
     this.fetchedViaServiceWorker = false;
     /** @type {string|undefined} */
     this.frameId = '';
+    /**
+     * @type {string|undefined}
+     * Only set for OOPIFs. This is the targetId of the protocol target from which this
+     * request came. Undefined means it came from the root.
+     */
+    this.targetId = undefined;
+    /**
+     * @type {string|undefined}
+     * Only set for OOPIFs. This is the sessionId of the protocol connection on which this
+     * request was discovered. Undefined means it came from the root.
+     */
+    this.sessionId = undefined;
     this.isLinkPreload = false;
   }
 
@@ -233,6 +245,19 @@ module.exports = class NetworkRequest {
     this._updateResponseReceivedTimeIfNecessary();
   }
 
+  /**
+   * @param {LH.Protocol.RawSource|undefined} source
+   */
+  setSource(source) {
+    if (source) {
+      this.targetId = source.targetId;
+      this.sessionId = source.sessionId;
+    } else {
+      this.targetId = undefined;
+      this.sessionId = undefined;
+    }
+  }
+
   /**
    * @param {LH.Crdp.Network.Response} response
    * @param {number} timestamp
diff --git a/lighthouse-core/test/gather/gatherers/dobetterweb/optimized-images-test.js b/lighthouse-core/test/gather/gatherers/dobetterweb/optimized-images-test.js
index 7af9f3e10f65..ed1efec978ed 100644
--- a/lighthouse-core/test/gather/gatherers/dobetterweb/optimized-images-test.js
+++ b/lighthouse-core/test/gather/gatherers/dobetterweb/optimized-images-test.js
@@ -68,6 +68,16 @@ const traceData = {
       resourceType: 'Image',
       finished: true,
     },
+    {
+      requestId: '1',
+      url: 'http://gmail.com/image.jpg',
+      mimeType: 'image/jpeg',
+      resourceSize: 15000,
+      transferSize: 20000,
+      resourceType: 'Image',
+      finished: true,
+      sessionId: 'oopif', // ignore for being an oopif
+    },
     {
       requestId: '1',
       url: 'data: image/jpeg ; base64 ,SgVcAT32587935321...',
diff --git a/lighthouse-core/test/gather/gatherers/dobetterweb/response-compression-test.js b/lighthouse-core/test/gather/gatherers/dobetterweb/response-compression-test.js
index 954dd908ec53..d885acf95254 100644
--- a/lighthouse-core/test/gather/gatherers/dobetterweb/response-compression-test.js
+++ b/lighthouse-core/test/gather/gatherers/dobetterweb/response-compression-test.js
@@ -55,6 +55,19 @@ const traceData = {
       content: '1234567',
       finished: true,
     },
+    {
+      url: 'http://google.com/index.json',
+      _statusCode: 200,
+      mimeType: 'application/json',
+      requestId: 27,
+      resourceSize: 7,
+      transferSize: 8,
+      resourceType: 'XHR',
+      responseHeaders: [],
+      content: '1234567',
+      finished: true,
+      sessionId: 'oopif', // ignore for being from oopif
+    },
     {
       url: 'http://google.com/index.json',
       _statusCode: 304, // ignore for being a cache not modified response
diff --git a/lighthouse-core/test/lib/network-recorder-test.js b/lighthouse-core/test/lib/network-recorder-test.js
index 671ad53a81ee..1c47eea7680d 100644
--- a/lighthouse-core/test/lib/network-recorder-test.js
+++ b/lighthouse-core/test/lib/network-recorder-test.js
@@ -180,6 +180,36 @@ describe('network recorder', function() {
     });
   });
 
+  it('should set the source of network records', () => {
+    const devtoolsLogs = networkRecordsToDevtoolsLog([
+      {url: 'http://example.com'},
+      {url: 'http://iframe.com'},
+      {url: 'http://other-iframe.com'},
+    ]);
+
+    const requestId1 = devtoolsLogs.find(
+      log => log.params.request && log.params.request.url === 'http://iframe.com'
+    ).params.requestId;
+    const requestId2 = devtoolsLogs.find(
+      log => log.params.request && log.params.request.url === 'http://other-iframe.com'
+    ).params.requestId;
+
+    for (const log of devtoolsLogs) {
+      if (log.params.requestId === requestId1) log.source = {sessionId: '1', targetId: 'a'};
+
+      if (log.params.requestId === requestId2 && log.method === 'Network.loadingFinished') {
+        log.source = {sessionId: '2', targetId: 'b'};
+      }
+    }
+
+    const records = NetworkRecorder.recordsFromLogs(devtoolsLogs);
+    expect(records).toMatchObject([
+      {url: 'http://example.com', sessionId: undefined, targetId: undefined},
+      {url: 'http://iframe.com', sessionId: '1', targetId: 'a'},
+      {url: 'http://other-iframe.com', sessionId: '2', targetId: 'b'},
+    ]);
+  });
+
   describe('#findNetworkQuietPeriods', () => {
     function record(data) {
       const url = data.url || 'https://example.com';
diff --git a/types/protocol.d.ts b/types/protocol.d.ts
index e80525c24c93..61c3ec5804ef 100644
--- a/types/protocol.d.ts
+++ b/types/protocol.d.ts
@@ -12,6 +12,11 @@ declare global {
      */
     export type RawEventMessage = RawEventMessageRecord[keyof RawEventMessageRecord];
 
+    export interface RawSource {
+      targetId?: string;
+      sessionId: string;
+    }
+
     /**
      * Raw (over the wire) message format of all possible Crdp command responses.
      */
@@ -65,6 +70,8 @@ type RawEventMessageRecord = {
     method: K,
     // Drop [] for `undefined` (so a JS value is valid).
     params: LH.CrdpEvents[K] extends [] ? undefined: LH.CrdpEvents[K][number]
+    // If the source is not set, it means the event was from the root target.
+    source?: LH.Protocol.RawSource
   };
 }