diff --git a/src/core/worker_stream.js b/src/core/worker_stream.js
index eb8f97f3c..6dfc3962a 100644
--- a/src/core/worker_stream.js
+++ b/src/core/worker_stream.js
@@ -105,7 +105,6 @@ class PDFWorkerStreamReader {
 class PDFWorkerStreamRangeReader {
   constructor(begin, end, msgHandler) {
     this._msgHandler = msgHandler;
-    this.onProgress = null;
 
     const readableStream = this._msgHandler.sendWithStream("GetRangeReader", {
       begin,
diff --git a/src/display/fetch_stream.js b/src/display/fetch_stream.js
index dc08637cc..4f603f9b6 100644
--- a/src/display/fetch_stream.js
+++ b/src/display/fetch_stream.js
@@ -205,7 +205,6 @@ class PDFFetchStreamRangeReader {
   constructor(stream, begin, end) {
     this._stream = stream;
     this._reader = null;
-    this._loaded = 0;
     const source = stream.source;
     this._withCredentials = source.withCredentials || false;
     this._readCapability = Promise.withResolvers();
@@ -235,8 +234,6 @@ class PDFFetchStreamRangeReader {
         this._reader = response.body.getReader();
       })
       .catch(this._readCapability.reject);
-
-    this.onProgress = null;
   }
 
   async read() {
@@ -245,9 +242,6 @@ class PDFFetchStreamRangeReader {
     if (done) {
       return { value, done };
     }
-    this._loaded += value.byteLength;
-    this.onProgress?.({ loaded: this._loaded });
-
     return { value: getArrayBuffer(value), done: false };
   }
 
diff --git a/src/display/network.js b/src/display/network.js
index 48bf60e2a..6f8a1f356 100644
--- a/src/display/network.js
+++ b/src/display/network.js
@@ -367,14 +367,12 @@ class PDFNetworkStreamRangeRequestReader {
       onHeadersReceived: this._onHeadersReceived.bind(this),
       onDone: this._onDone.bind(this),
       onError: this._onError.bind(this),
-      onProgress: this._onProgress.bind(this),
+      onProgress: null,
     });
     this._requests = [];
     this._queuedChunk = null;
     this._done = false;
     this._storedError = undefined;
-
-    this.onProgress = null;
   }
 
   _onHeadersReceived() {
@@ -412,10 +410,6 @@ class PDFNetworkStreamRangeRequestReader {
     this._queuedChunk = null;
   }
 
-  _onProgress(evt) {
-    this.onProgress?.({ loaded: evt.loaded });
-  }
-
   async read() {
     if (this._storedError) {
       throw this._storedError;
diff --git a/src/display/node_stream.js b/src/display/node_stream.js
index 4c6276505..03266b0fe 100644
--- a/src/display/node_stream.js
+++ b/src/display/node_stream.js
@@ -206,9 +206,6 @@ class PDFNodeStreamFsRangeReader {
   _reader = null;
 
   constructor(stream, begin, end) {
-    this.onProgress = null;
-    this._loaded = 0;
-
     const url = stream.url;
     const fs = process.getBuiltinModule("fs");
     try {
@@ -232,9 +229,6 @@ class PDFNodeStreamFsRangeReader {
     if (done) {
       return { value, done };
     }
-    this._loaded += value.length;
-    this.onProgress?.({ loaded: this._loaded });
-
     return { value: getArrayBuffer(value), done: false };
   }
 
diff --git a/src/display/transport_stream.js b/src/display/transport_stream.js
index 8c1a21f16..1fb74f521 100644
--- a/src/display/transport_stream.js
+++ b/src/display/transport_stream.js
@@ -111,10 +111,7 @@ class PDFDataTransportStream {
   }
 
   _onProgress(evt) {
-    if (evt.total === undefined) {
-      // Reporting to first range reader, if it exists.
-      this._rangeReaders[0]?.onProgress?.({ loaded: evt.loaded });
-    } else {
+    if (evt.total !== undefined) {
       this._fullRequestReader?.onProgress?.({
         loaded: evt.loaded,
         total: evt.total,
@@ -265,8 +262,6 @@ class PDFDataTransportStreamRangeReader {
     this._queuedChunk = null;
     this._requests = [];
     this._done = false;
-
-    this.onProgress = null;
   }
 
   _enqueue(chunk) {
diff --git a/src/interfaces.js b/src/interfaces.js
index 587727327..34c5f95bf 100644
--- a/src/interfaces.js
+++ b/src/interfaces.js
@@ -135,16 +135,6 @@ class IPDFStreamReader {
  * @interface
  */
 class IPDFStreamRangeReader {
-  constructor() {
-    /**
-     * Sets or gets the progress callback. The callback can be useful when the
-     * isStreamingSupported property of the object is defined as false.
-     * The callback is called with one parameter: an object with the loaded
-     * property.
-     */
-    this.onProgress = null;
-  }
-
   /**
    * Requests a chunk of the binary data. The method returns the promise, which
    * is resolved into object with properties "value" and "done". If the done