The size of web page text is displayed in the browser app on the OnePlus smartphone at 100% by default, but can be changed at any time.

For this purpose we have a slider that allows text scaling of up to 200%.

Note: After zooming in, it must be checked whether the option "Activate zoom mandatory" is active.

Android 10 | OxygenOS 10.0
Text scaling -  Open the  Chrome app
Text scaling -  Open the  menu
Text scaling -  Open the  Settings
Text scaling -  Tap on  Accessibility
Text scaling -  Swipe  left  or  right  to set the text scaling
Text scaling -  Make sure  Force enable zoom  is turned on
  1. Open the Chrome app
  2. Open the menu
  3. Open the Settings
  4. Tap on Accessibility
  5. Swipe left or right to set the text scaling
  6. Make sure Force enable zoom is turned on

OnePlus Instructions