HighlightKit

About

HighlightKit lets you highlight specific text on any webpage in real-time. 

Pick the text you want to track, choose a highlight color (yellow, red, black, or green), and it'll automatically highlight that text everywhere it appears - even as new content loads on the page.

Features:
  - Real-time highlighting as content loads
  - Four highlight colors (Yellow, Red, Black, Green)
  - Toggle strings on/off without deleting
  - Import/Export watch lists
  - Case-insensitive search
  - Works on any website
  - All data stored locally - no tracking

You can monitor dashboards, track keywords while researching, or just make important information easier to spot.

Your watched strings are saved locally and work across all websites. No data collection, no tracking - just highlighting.