- Screen Capture Extension
- Screen Capture Chrome Extension
- Screen Capture Chrome App
- Screen Capture Chrome Browser
- Screen Capture Chrome Addon
- Screen Capture Chrome Shortcut
- Screen Capture Chromebook
In this guide, we’ll demonstrate how to share your screen using twilio-video.js. Chrome 72+, Firefox 66+ and Safari 12.2+ support the getDisplayMedia API. This can be used to capture the screen directly from the web app. For previous versions of Chrome, you'll need to create an extension. The web application will communicate with this extension to capture the screen.
Update: First Look – Screen Capture and Screen Recording for Chromebook. You will soon get a new UI for taking screenshots on Chromebooks. Here is a quick demo of this feature. The simplest and most reliable Chrome extension for taking a screenshot of an entire webpage. In one click screenshot a full page. Optionally crop, edit, and annotate your result in a modern interface. Export to image, PDF, or copy to your clipboard so you can share it with others or keep it in your own records.
Chrome (72+), Firefox (66+), Safari (12.2+): Use getDisplayMedia
To share your screen in a Room, use
getDisplayMedia()
to get the screen's MediaStreamTrack and create a LocalVideoTrack:Then, you can either publish the LocalVideoTrack while joining a Room:
or, publish the LocalVideoTrack after joining a Room:
Firefox (65-): Use getUserMedia
To share your screen in the Room, use
getUserMedia()
to get the screen's MediaStreamTrack and create a LocalVideoTrack:Then, you can either publish the LocalVideoTrack while joining a Room:
or, publish the LocalVideoTrack after joining a Room:
Screen Share Not Supported on Mobile Web Browsers
Currently, we do not support Screen Sharing on Mobile Browsers as getDisplayMedia is not supported. However, it can be achieved through the iOS SDK and Android SDK.
Chrome (71-): Build a Screen Share Extension
Our web app and extension will communicate using message passing. Specifically, our web app will be responsible for sending requests to our extension using Chrome's
sendMessage
API, and our extension will be responsible for responding to requests raised through Chrome's onMessageExternal
event. By convention, every message passed between our web app and extension will be a JSON object containing a type
property, and we will use this type
property to distinguish different types of messages.Web App Requests
Our web app will send requests to our extension.
'getUserScreen' Requests
Since we want to enable Screen Capture, the most important message our web app can send to our extension is a request to capture the user's screen. We want to distinguish these requests from other types of messages, so we will set its
type
equal to 'getUserScreen'. (We could choose any string for the message type
, but 'getUserScreen' bears a nice resemblance to the browser's getUserMedia
API.) Also, Chrome allows us to specify the DesktopCaptureSourceTypes we would like to prompt the user for, so we should include another property, sources
, equal to an Array of DesktopCaptureSourceTypes. For example, the following 'getUserScreen' request will prompt access to the user's screen, window, or tab:Our web app should expect a success or error message in response.
Extension Responses
Our extension will respond to our web app's requests.
Success Responses
Any time we need to communicate a successful result from our extension, we'll send a message with
type
equal to 'success', and possibly some additional data. For example, if our web app's 'getUserScreen' request succeeds, we should include the resulting streamId
that Chrome provides us. Assuming Chrome returns us a streamId
of '123', we should respond withError Responses
Any time we need to communicate an error from our extension, we'll send a message with
type
equal to 'error' and an error message
. For example, if our web app's 'getUserScreen' request fails, we should respond withProject Structure
In this guide, we propose the following project structure, with two top-level folders for our web app and extension.
Note: If you are adapting this guide to an existing project you may tweak the structure to your liking.
Web App
Screen Capture Extension
index.html
Since our web app will be loaded in a browser, we need some HTML entry-point to our application. This HTML file should load web-app.js and twilio-video.js.
web-app.js
Our web app's logic for creating twilio-video.js Clients, connecting to Rooms, and requesting the user's screen will live in this file. Cloudtv 3 8 5.
Extension
extension.js
Our extension will run extension.js in a background page. This file will be responsible for handling requests. For more information refer to Chrome's documentation on background pages.
manifest.json
Every extension requires a manifest.json file. This file grants our extension access to Chrome's Tab and DesktopCapture APIs and controls which web apps can send messages to our extension. For more information on manifest.json, refer to Chrome's documentation on the manifest file format; otherwise, feel free to tweak the example provided here. Note that we've included '://localhost/' in our manifest.json's 'externally_connectable' section. This is useful during development, but you may not want to publish your extension with this value. Consider removing it once you're done developing your extension.
Requesting the Screen
Screen Capture Chrome Extension
We define a helper function in our web app,
getUserScreen
, that will send a 'getUserScreen' request to our extension using Chrome's sendMessage
API. If our request succeeds, we can expect a 'success' response containing a streamId
. Our response callback will pass that streamId
to getUserMedia
, and—if all goes well—our function will return a Promise that resolves to a MediaStream representing the user's screen.Connecting to a Room with Screen Sharing
Assume for the moment that we know our extension's ID and that we want to request the user's screen, window, or tab. We have all the information we need to call
getUserScreen
. When the Promise returned by getUserScreen
resolves, we need to use the resulting MediaStream to construct the LocalVideoTrack object we intend to use in our Room. Once we've constructed our LocalVideoTrack representing the user's screen, we have two options for publishing it to the Room:- We can provide it in our call to
connect
, or - We can publish it after connecting to the Room using
publishTrack
.
Finally, we'll also want to add a listener for the 'stopped' event. If the user stops sharing their screen, the 'stopped' event will fire, and we may want to remove the LocalVideoTrack from the Room. We can do this by calling
unpublishTrack
.Handling Requests
Our extension will listen to Chrome's
onMessageExternal
event, which will be fired whenever our web app sends a message to the extension. In the event listener, we switch on the message type
in order to determine how to handle the request. In this example, we only care about 'getUserScreen' requests, but we also include a default
case for handling unrecognized responses.'getUserScreen' Requests
Siegecraft commander 1 2. We define a helper function in our extension,
handleGetUserScreenRequest
, for responding to 'getUserScreen' requests. The function invokes Chrome's chooseDesktopMedia
API with sources
and, if the request succeeds, sends a success response containing a streamId
; otherwise, it sends an error response.Unrecognized Requests
For completeness, we'll also handle unrecognized requests. Any time we receive a message with a
type
we don't understand (or lacking a type
altogether), our extension's handleUnrecognizedResponse
function will send the following error response:handleUnrecognizedRequest Implementation
Publishing the Extension
Finally, once we've built and tested our web app and extension, we will want to publish our extension in the Chrome Web Store so that users of our web app can enjoy our new Screen Capture functionality. Take a look at Chrome's documentation for more information.
Need some help?
We all do sometimes; code is hard. Get help now from our support team, or lean on the wisdom of the crowd browsing the Twilio tag on Stack Overflow.
In order to share some screenshots for some webpage on Google Chrome to your friends or colleagues, how do you take snapshots? Can you use Chrome to take screenshot directly, or choose the screenshot Chrome extensions? How do you crop, edit, or even add comments on the screenshot on Google Chrome with ease? Just learn more about the ultimate guide about Chrome screenshot from the article.
Part 1: 4 Different Methods to Capture Screen in Chrome
Google Chrome has a hidden feature inside the Developer Tools that enables you to take a full-page screenshot for Chrome. Whether you need to capture full-size screenshot for Chrome, or even the scrolling screenshot, you can find the methods as below.
Step 1: Access Developer Tools
Screen Capture Chrome App
You can just right click any part of the browser and select the Inspect option, or click the Customize and control Google Chrome icon (3 vertical dots icon) and choose the Developer Tools option under the More Tools option.
Step 2: Use the Command Menu
To access the command menu, you can press Ctrl + Shift + P for Windows and CMD + Shift + P for Mac. After that, you can enter the screenshot in the column and choose the desired Chrome screenshot mode.
Step 3: Capture a Screenshot of Chrome Alfred 4 powerpack v4 0 7 (1130).
Screen Capture Chrome Browser
When you want to take a screenshot on Chrome, here are the 4 different methods you can follow. Here are more details about the method you should know.
Capture area screenshot: capture the desired part according to your selection.
Capture full size screenshot: take the whole webpage screenshot on Chrome.
Capture screenshot: have a screenshot of the current page on Chrome.
Screen Capture Chrome Addon
Capture node screenshot: record the node.js of the current webpage.
Part 2: 3 Best Chrome Screenshot Extensions and Alternative
When you need to capture a screenshot on Chrome, or even record the full screen as a video, here are 3 best Chrome screenshot extensions and the alternatives you should take into consideration.
Top 1. Vidmore Screen Recorder
Vidmore Screen Recorder provides a free screenshot capturer, which enables you to take snapshots on Chrome, Firefox, Safari and onscreen activities on your computer. There are some editing and annotation features to Moreover, it is able to record video and capture video within clicks.
- Take a screenshot with fix frame, select or customize the desired frame.
- Choose the output screenshot format, destination and more other settings.
- Set hotkeys for screen capture, start recording, pause recording, etc.
- Add text, arrows and shapes to your recording or screenshot with ease.
Top 2. Awesome Screenshot Extension
Awesome Screenshot is one of the most popular screenshot extensions for Chrome that captures visible part of the page, selected area, the entire page, a local image, or even record screen. Moreover, it enables you to add a comment, annotation, blur sensitive information and more.
Screen Capture Chrome Shortcut
- Capture a selected area, or all visible portion, entire page, or scrolling page.
- Annotate images with rectangles, circles, arrows, lines and text or blur file.
- One-click to upload to awesomescreenshot.com and get a shareable link.
- Provide editing features to crop, scroll & show crop area dimensions.
Top 3. Nimbus Capture Extension
When you want to capture a scrolling page of Chrome, Nimbus Capture is the recommended extension you can take into consideration. It enables you to screen capture full web page, record screencasts, or even record videos within the add-on of the Chrome directly.
- Screen captures whole page, partial screenshots as well as scrolling page.
- Blur certain sections to hide sensitive information or even add watermark.
- Upload the screencast either to Nimbus Note or save to your disk.
- Add graphics, text boxes and more others to your Chrome screenshot.
Part 3: FAQs about How to Take Screenshot on Google Chrome
1. How to Capture Chrome Screenshot for Your Android or iPhone?
To switch to responsive or device mode in Windows and Mac, you can directly take snapshots for your smartphone. Press the CMD + Shift + M for your Mac, or the Ctrl + Shift +M on your Windows. After that, you can select the preferences for device type, zoom level, orientation and more others to capture a desired chrome screenshot on any other device.
2. What Should You Do if Chrome Screenshot Extension Crashes?
Because of the compatibilities of the Chrome browser, some of the Chrome screenshot extensions might crash the browser. Just update the some of the add-ons, or even reinstall them to find whether it works. If it still does not work, you should remove the programs and use Vidmore Screen Recorder as the best alternative.
Screen Capture Chromebook
3. Is there a Method to Add Comments on Screenshot Directly?
If you just need to crop the screenshot on Chrome, you can choose the capture area screenshot only, which is available to most of the Chrome screenshot extensions. But when you need to add comments, such as a mouse cursor, text, arrow and more others, you should use the professional screenshot capturer instead.
Conclusion
How to take a screenshot for full page of Chrome? Of course, if you do not want to install extra software to have a webpage screenshot on Chrome, you can just use the default Developer Tools of Chrome instead. Of course, there are some excellent extensions and alternative to extend the capabilities of the screenshot capturing features.