About ://flags page, formerly known as about:labs page available on Chromium and dev. and Canary builds of Chrome, these flags are experimental features under development being aimed at developers and advanced users, and not for regular users. That’s why, they are disabled by default, interested users can test them by turning one or more features, browser needs to be restarted for the changes to take effect.

Google Removes Enable Instant Extended API Flag in Chrome

Chrome://flags or about:flags page warns user “these experimental features may change, break, or disappear at any time”. And the implications of turning one or more experimental features could burn your browser and can yield data loss, and result in compromise of privacy and security.

How to Reset all Chrome flags to default

So if you’ve enabled few experimental features, you need to disable them after testing. But you need to carefully look for each and every flag, after all there are more than 133 flags to go through. So finding each enabled flag and disabling it again can be tedious task and takes some time, keeping this in mind, Chrome team has added “Reset all to default button” on top of the Chrome flags page, which you can use.

Chrome flags page with reset all to default button

So to reset all Chrome flags to default

1. Visit about:flags in Chrome

2. Click on “Reset all to default” button and scroll down to bottom, and click on “Relaunch Now” button for the changes to take effect.

Currently this option is available on Chromium and Canary builds [Update: available on developer, Beta and stable channels too). [Thanks to Francois]

Update : Similarly, you can reset all Opera (Chromium-based) flags to defaults as well.