Twitter is rolling out a new accessibility feature for its web app to improve the user experience.
The feature aims to improve the visualization of the contents for people with poor eyesight.
Twitter is rolling out a server-side update to activate the feature on the Mobile/PWA app and web browsers. You simply need to restart your application
You can activate the feature from Settings > Accessibility > Vision > Increase color contrast
Twitter’s New GIF Customization Feature
GIFs are today considered as one of the preferred ways to communicate online. More specifically, they add an element of humor to your Twitter conversations.
https://appuals.com/twitter-increase-contrast-feature/