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Google today launched Chrome 51 for Windows and Mac, promising that the Linux version will “ship shortly.” This release includes the usual slew of developer features, but users should benefit from some of the improvements right away. You can update to the latest version now using the browser’s built-in silent updater, or download it directly from google.com/chrome.

Chrome is arguably more than a browser: With over 1 billion users, it’s a major platform that web developers have to consider. In fact, with its regular additions and changes, developers have to keep up to ensure they are taking advantage of everything available.

First up, Google has added the Credential Management API to Chrome. In short, the new API allows developers to use Chrome’s credential managers more extensively than just for storing a saved password. Custom login flows, remembering federated identity preferences, and general interaction to improve the login experience for users is now possible. Users can sign in with one tap and automatically sign back in when returning to the site.

Next up, the Intersection Observer API allows sites to detect element intersections as an asynchronous event. Sites can receive a callback whenever any element intersects a watched element or its children. Providing viewability information in this more efficient way eliminates the need for costly document monitoring. In short, sites no longer need to implement this functionality with custom JavaScript, and they gain the benefits of improved page load and scroll performance.

Google has also reduced the overhead of offscreen rendering. Chrome no longer runs the rendering pipeline or requestAnimationFrame() callbacks for cross-origin frames that are offscreen. This eliminates unnecessary work and also reduces power consumption by up to 30 percent, according to Google’s own tests on several popular mobile sites. This essentially means that embedded content like videos, social widgets, and ads no longer create overhead that slow down the page.

Lastly, SPDY and NPN support have been removed (a little later than promised) in favor of the standards-based HTTP/2 protocol and ALPN. SPDY, which is not an acronym but just a short version of the word “speedy,” is a protocol — developed primarily at Google — to improve browsing by forcing SSL encryption for all sites and speeding up page loads. The TLS extension NPN allows servers to negotiate SPDY and HTTP/2 connections with clients, but ALPN is more secure.

Other developer features in this release include:

• Passive event listeners, which allow sites to run JavaScript in response to touch and wheel input without blocking scrolling.
• Blobs are now constructed and transferred to the browser asynchronously, allowing large data files to be moved without janking the page.
• The SameSite cookie attribute allows sites to restrict cookies to requests from the same domain.
• Support for the AES_256_GCM cipher on TLS improves security on servers that choose cipher by key size, where legacy 256-bit ciphers were used over more secure, but smaller, ciphers.
• Array.prototype.values() makes it easier to iterate over the elements of an array.
• The function name property now infers useful names for properties and methods with computed property names, making debugging easier with clearer labels and error messages.
• Iterators that are part of a for-of loop that terminates early now call a developer-provided close() method, making it easier to respond to the end of an iteration.
• Symbol.species makes subclassing built-in classes such as Array and RegExp more powerful by allowing custom constructors to be called for derived objects.
• RegExp subclasses can overwrite the exec() method to change the matching algorithm, making it easier to write custom subclasses.
• Sites can now implement their own Symbol.hasInstance() method to customize behavior of the instanceof operator.
• Sites can now retrieve a service worker’s Client object using Clients.get(id).
• ServiceWorker.postMessage() now fires an ExtendableMessageEvent on ServiceWorkerGlobalScope, allowing the message to extend the service worker lifetime and provide more accurate message sources.
• The HTML referrerpolicy attribute allows sites to control what information is sent in the referrer headers of <a>, <area>, <img>, and <iframe> elements.
• The UIEvents KeyboardEvent |key| attribute allows sites to reliably determine the meaning of the key being pressed.
• Sites can now detect the duration of batched offline audio contexts using the OfflineAudioContext.length attribute.
• The ability to customize the message shown in the onbeforeunload dialog has been removed to protect users from malicious websites and align with other browsers.
• Chrome on Android now uses the same media pipeline as desktop Chrome, improving WebAudio support and allowing sites to interact with the playback rate on <audio> and <video> tags.
• The latest version of Chrome improves web animations interoperability by supporting lists of values and removing dashed-names in keyframes.
• Chrome now requires a border style to paint border images, improving spec compliance and interoperability.
• Percentages can now be used for the sizes of flex item children.
• DHE-based ciphers have been deprecated and will be removed in Chrome 52 in favor of ECDHE ciphers to improve TLS security.

Chrome 51 also includes 42 security fixes, of which Google chose to highlight the following:

• [$7500][590118]High CVE-2016-1672: Cross-origin bypass in extension bindings. Credit to Mariusz Mlynski.
• [$7500][597532]High CVE-2016-1673: Cross-origin bypass in Blink. Credit to Mariusz Mlynski.
• [$7500][598165]High CVE-2016-1674: Cross-origin bypass in extensions. Credit to Mariusz Mlynski.
• [$7500][600182]High CVE-2016-1675: Cross-origin bypass in Blink. Credit to Mariusz Mlynski.
• [$7500][604901]High CVE-2016-1676: Cross-origin bypass in extension bindings. Credit to Rob Wu.
• [$4000][602970]Medium CVE-2016-1677: Type confusion in V8. Credit to Guang Gong of Qihoo 360.
• [$3500][595259]High CVE-2016-1678: Heap overflow in V8. Credit to Christoph Diehl.
• [$3500][606390]High CVE-2016-1679: Heap use-after-free in V8 bindings. Credit to Rob Wu.
• [$3000][589848]High CVE-2016-1680: Heap use-after-free in Skia. Credit to Atte Kettunen of OUSPG.
• [$3000][613160]High CVE-2016-1681: Heap overflow in PDFium. Credit to Aleksandar Nikolic of Cisco Talos.
• [$1000][579801]Medium CVE-2016-1682: CSP bypass for ServiceWorker. Credit to kingstonmailbox.
• [$1000][583156]Medium CVE-2016-1683: Out-of-bounds access in libxslt. Credit to Nicolas Gregoire.
• [$1000][583171]Medium CVE-2016-1684: Integer overflow in libxslt. Credit to Nicolas Gregoire.
• [$1000][601362]Medium CVE-2016-1685: Out-of-bounds read in PDFium. Credit to Ke Liu of Tencent’s Xuanwu LAB.
• [$1000][603518]Medium CVE-2016-1686: Out-of-bounds read in PDFium. Credit to Ke Liu of Tencent’s Xuanwu LAB.
• [$1000][603748]Medium CVE-2016-1687: Information leak in extensions. Credit to Rob Wu.
• [$1000][604897]Medium CVE-2016-1688: Out-of-bounds read in V8. Credit to Max Korenko.
• [$1000][606185]Medium CVE-2016-1689: Heap buffer overflow in media. Credit to Atte Kettunen of OUSPG.
• [$1000][608100]Medium CVE-2016-1690: Heap use-after-free in Autofill. Credit to Rob Wu.
• [$500][597926]Low CVE-2016-1691: Heap buffer-overflow in Skia. Credit to Atte Kettunen of OUSPG.
• [$500][598077]Low CVE-2016-1692: Limited cross-origin bypass in ServiceWorker. Credit to Til Jasper Ullrich.
• [$500][598752]Low CVE-2016-1693: HTTP Download of Software Removal Tool. Credit to jackwillzac.
• [$500][603682]Low CVE-2016-1694: HPKP pins removed on cache clearance. Credit to Ryan Lester.
• [614767] CVE-2016-1695: Various fixes from internal audits, fuzzing and other initiatives.

If you add all those up, you’ll see Google spent a massive $65,500 in bug bounties. The security fixes alone should be enough incentive for you to upgrade to Chrome 51.

Chrome 51 for Android and iOS are also on their way, but Google has not shared exactly when they will ship. Chrome 52 will arrive in early July.

2020-09-11 17:51:34 • Filed to: macOS 10.15 • Proven solutions

Is your Google Chrome failing to open in your macOS 10.15 device? Well, you are not alone in this. Some Mac users have reported a Google Chrome crash on macOS 10.15. The bug is so severe that you may experience numerous crashes in a day hence affecting your browsing activities.

Although users have reported the Chrome crashes to Google in a bid to fix Google Chrome freezing on macOS 10.15, Google claims the issue with the latest update of macOS, and they have reported it to Apple. Therefore, since it a software, this article will give you a detailed solution on how to fix Google Chrome issues on macOS 10.15.

How to Fix Chrome Issues on macOS 10.15

There are different Google Chrome issues that are associated with updating to macOS 10.15. In this section, we show to highlight some of Google Chrome issues and state how to fix Google Chrome problems on macOS 10.15.

Issue 1. Google Chrome Running Slow

This problem may be caused by the computer running out of memory. It may be due to multiple apps running in the computer, extensions that slow the Chrome app, and file downloads or other tabs.

To solve Google Chrome problems running on your mac, consider clearing browsing data under the Chrome settings. This helps free up memory. In case there are extensions that are not in use, you can uninstall them. If this does not work, you can restart Chrome or the computer to enhance the speed.

Issue 2. Keep freezing

Another problem that you will encounter Google Chrome crash on macOS 10.15 is that your computer freezes unexpectedly. This means you will not be able to do any action on your Mac. In this case, you have to be careful because you may lose important unsaved information.

To fix Google Chrome freezing on your macOS 10.15, consider these options.

• You can opt for Force Quit if the application fails to respond completely by simultaneously pressing Command + Option + Escape keys. Then select the unresponsive application to close.
• Option two is to reboot your Mac Computer. You can do this by continuously pressing the power button for a few seconds. The final option to opt for if all others fail is to unplug from power.

When you successfully shut down the computer, you will need to restart it in Safe Mode to avoid losing data. The safe boot helps troubleshoot all problems to return your Mac computer to the normal state.

Google Chrome 51

Issue 3. Keep Crashing

Google Chrome crashes on your macOS 10.15 computer after constant freezing. If it gets to this point, it means you may easily lose your unsaved data. Once it crashes, it completely fails to open or opens but shuts down I a while.

To control this, consider disabling some of the extensions that keep stopping. Such extensions, especially those released for free, require many permissions. Though they seem to be useful, they are dangerous to the computer. To disable the extensions, open browser menu, and select 'Settings' and then 'Extensions.' Continue to uncheck the extension to disable it or remove it by clicking the 'Delete' button.

Issue 4. Can't Load Web Pages

Have you encountered an error in loading a website on the Google Chrome browser on your macOS 10.15? It definitely may be caused by the Chrome browser, which has encountered a problem. Possible issues could be unresponsive extensions, Google Chrome not up to date, or internet connection error.

To solve the Google Chrome problem running on your Mac computer, you first need to check on your Wi-Fi connection. If you are well connected, then consider updating your Google Chrome. Go to the 'Chrome' menu, click on 'About,' and check for updates.

Also, locate unresponsive extensions and disable or delete them completely. Such extensions may be from unrecognized developers and may contain bugs that cause the stall.

Issue 5. Stability Issues

Google Chrome won't open in mac or will frequently misbehave and becoming unreliable. This is caused by a serious bug brought about by the installed extensions in the Chrome application. Following updates on the Google Chrome security, it limits some of the extensions from working correctly.

In case you have installed the 1 Password extension, it may be the cause of the issues. To fix the Google Chrome stability problem in your Mac 10.15, disable and enable all the installed extensions and locate the faulty one.

Issue 6. Update Failed

In case you have encountered Google Chrome update failure for your macOS 10.15, here is the solution to the error. Start by checking the internet connection speed and ensure it is okay.

Ensure that system requirement and permissions to do the update are right. Open Chrome and proceed to settings. On the opened window, open advanced settings and select the 'Reset settings.' Proceed to select 'Reset' to reverse the application to its original state. If this does not help, you will have to remove Google Chrome and install its updated latest version.

Best PDF Editor for macOS 10.15

Having updated from an older version of Mac to macOS 10.15 Catalina. Mac user should then manage their PDF documents easily by installing PDFelement. It is a top-notch and versatile PDF tool that supports PDF editing, PDF conversions, and the creation of PDF files.

On its website, you will get a free trial option that is fully compatible with macOS 10.15 Catalina. With this PDFelement on your macOS 10.15 Catalina, you will not need any other PDF tool or extension since it comes with the following features.

Chrome 51 Download Mac Os

• Converts PDF files to most output formats like Word, Excel, PowerPoint, HTML, and Images
• Encrypts PDFs with passwords secures them with digital signatures, and allows you to add watermarks.
• Can create PDFs by merging PDFs, creating from blank documents and screen or window captures.
• Enables you to annotate, highlight, and bookmark PDFs.
• OCR feature. It helps users to effortlessly recognize text embedded in images or scanned documents.
• Its editor supports editing of texts, fonts, styles, images, links images, and modifying pages.
• It's a PDF viewer.

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