To prevent Chrome from automatically updating on Mac, it can be done by disabling update services, modifying permissions, and restricting network access. 1. Use terminal commands to disable the GoogleSoftwareUpdate daemon to prevent background updates; 2. Modify update directory permissions to prevent Chrome from starting the update process by itself; 3. Restrict Chrome's outbound network connection through system firewall or third-party tools to further eliminate update requests. Using these methods in combination can effectively prevent Chrome from being automatically updated.

To let Chrome download directly instead of opening it when clicking on the PDF link, 1. Enter chrome://settings/content/pdfDocuments to check "DownloadPDFfilesinsteadofautomatically opening theminChrome"; 2. Check whether there are plug-ins such as Lightpdf or Smallpdf interfering behavior, you can try to disable the test; 3. You can use the developer tools to copy the link and paste the new tag to trigger the download. The above methods can be selected according to the situation.

The screen tear occurs when the Chrome browser scrolls, which is usually caused by the out-of-synchronization of rendering and refresh. The solutions are as follows: 1. Ensure that hardware acceleration is enabled, you can manually check the settings and restart the browser; 2. Forcefully enable Compositor and related options to optimize rendering; 3. Check the display refresh rate, use single-screen testing, and enable VSync or adaptive synchronization technology on supported devices; 4. Update the graphics card driver or replace the display interface such as using the DP interface. It is recommended to start the troubleshooting with simple steps and gradually adjust to find the best configuration.

The problem of Chrome sync stuck can be solved through the following steps: 1. Check the network connection and Google account status to ensure normal access; 2. Log out and log in to the Chrome account again; 3. Clear the synchronized data and restart the browser; 4. Reset Chrome settings; 5. Try the traceless mode or new user profile. Sequentially checking can effectively restore the synchronization function.

The problem of Chrome automatically popping up new tabs is usually caused by malicious extensions, advertising scripts, or browser hijacking. The solutions are as follows: 1. Check and uninstall suspicious extensions, especially ad-class plug-ins; 2. Clear browser caches and cookies to eliminate data corruption; 3. Check whether the homepage and default search engine settings have been tampered with and manually corrected; 4. Use antivirus software such as WindowsDefender or Malwarebytes to scan and clear potential malware; 5. Finally, try resetting Chrome settings to restore the default configuration. Troubleshooting in this order can effectively solve most abnormal labeling problems.

1. Check whether the shortcut attribute has additional parameters and delete it; 2. Clear cache and switch startup settings, or create new user information; 3. Extend the impact and disable the problem plug-in through traceless mode. Chrome pops up new windows instead of tabs usually due to exceptions in shortcut parameters, cache configuration conflicts, or third-party extension interference. Check and adjust the corresponding settings in turn to resolve.

Chrome printing exceptions can be solved in the following ways: 1. Check the printer selection, paper size, orientation, zooming and background graphics settings in the print preview; 2. Try stealth mode to eliminate extended interference and clear cache; 3. Update or reinstall the printer driver, replace the general driver or use the "Print as PDF" method; 4. Finally, you can reset the Chrome settings to restore the default. Most problems can be solved through the first few steps. If they still fail, you can export PDF to print.

Chrome's "Contrast Ratio" check tool can be found directly under the "Computed" panel of the developer tool, which is used to determine whether the text and background colors meet the accessibility standards. Select the text element when using it, open the color selector next to the "color" property, and the contrast ratio will be displayed at the bottom. If it is below the standard, a red warning will be displayed, and if it is met, it will be green. The WCAG standard requires at least 4.5:1 text and at least 3:1 large fonts to ensure that people with visual impairment can also read clearly. Common questions include light-colored text, similar color matching or picture background interference, etc. This tool is suitable for casual inspection when debugging styles, especially when modifying color schemes or repairing UI components, and it is recommended to evaluate translucent or