mozilla firefox developer tools keeps flashing

You can add breakpoints in your script, which will cause your script execution to stop at those breakpoints. This tool is useful in debugging scripts. The painted areas are the areas that are re-rendered/re-painted by the browser to adjust to the size of the browser.

If you adjust the browser window to its normal size, you will see a re-paint, as shown below: Notice that the top-leaf area of the green “Web APIs” was not colored because it needs no update to fit the current size. The colored areas are the areas that were re-rendered by the browser to make the elements fit the adjusted size of the browser. Paint flashing is enabled, and no area is painted because it just rendered.Ĭlick on the Restore button in the browser window to resize the browser window. Now, elements or groups of elements that are re-painted/updated by the browser will be highlighted with different colors. This will add the following icon to your DevTools:Ĭlicking on the icon will activate paint flashing. To enable paint flashing, go to settings and check the Toggle paint flashing box. We can make the browser show us spots and sections on a page that have been updated by highlighting those sections with colors.

This will cause a button to be added to the DevTools:Ĭlick on the camera icon to take a snapshot of the current page.

Go to your DevTools settings and enable the Take a screenshot of the entire page checkbox. You don’t need extra software to take screenshots of your page, as you can do it from your browser’s DevTools. You will see different network options: GPRS, Regular 2G, Good 2G, Regular 3G, Good 3G, Regular 4G, Wi-fi. Go to the Network tab and, on the right-hand side, click on the No Throttling dropdown button. We have an option in our browser to choose how fast a page can load. Testing our web pages in the local host of our machine is very fast indeed, but our webpages are guaranteed to encounter laggy networks in the wild. Below are the 11 Useful Firefox DevTools functionalities you might have missed.

Mozilla firefox developer tools keeps flashing