IMDb Rating Normalizer
what you thought was a 7/10 is really a 5/10
Chrome Web Store · v0.1
Source on GitHub
A Chrome extension that shows a normalized IMDB rating next to the official one, correcting for human rating biases.
Install
Get it from the Chrome Web Store, or load src/chrome-extension unpacked from the source.
Motivation
People rarely use the full 1–10 scale.
- Loss aversion makes low scores feel stronger than high ones, so ratings cluster around 7–8, leaving 5 underused.
- Most users treat 7/10 as “average” and 8/10 as “good,” skewing the mean to 7–8 instead of 5.5.
Features
- Instant display of the normalized rating (1.0–10.0) on each movie page.
- Vote-count filter: applies only to titles with at least 500 votes for accuracy.
Normalization Algorithm
Uses a probability-integral transform followed by an inverse-normal mapping to recenter ratings at 5.5.
Screenshots
