Reading Difficulty Estimator
Show grade level and reading time for any article.
ai
PlugThis prompt
Build a Chrome extension called "Reading Difficulty Estimator" that shows a small badge on any article page with: estimated reading time (250 wpm default, configurable), Flesch-Kincaid grade level, average sentence length, and percentage of complex words. Compute locally — no API needed. Click the badge to expand a panel with the same stats plus a per-paragraph heatmap highlighting the most difficult sentences in orange/red. Permissions: storage, activeTab. Manifest V3 with content script.
How to build it in 3 minutes
- Sign in to PlugThis and open the chat input.
- Copy the prompt above and paste it into the chat.
- PlugThis generates the full Manifest V3 extension in 60-90 seconds.
- Download the zip, extract it, and load it via
chrome://extensionsdeveloper mode.