# kernalytics-rf-ext

**Repository Path**: mirrors_adobe-type-tools/kernalytics-rf-ext

## Basic Information

- **Project Name**: kernalytics-rf-ext
- **Description**: Robofont Extension for editing kerning in multiple UFOs
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-09-24
- **Last Updated**: 2026-10-17

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README


⚠️ WARNING: This extension works, but it’s work in progress. 
It may not do what you expect. Back up your data. ⚠️ 

<img src="kern-a-lytics.png" alt="kern-a-lytics screenshot"/>

# Kern-A-Lytics v0.1.4

This extension helps analyzing and fixing the consistency of kerning across several master UFOs.  

## UI Elements


#### Graph

The interactive graph is the main point of this extension.
It visualizes the values of a kerning pair across a number of masters.
Sliders can be dragged up and down (currently capped to 500/-500).
A double-click on a slider will delete that kerning pair for that specific master.


#### List

The list contains all combined kerning pairs for all open UFOs.


#### List Filter

The list filter contains various pre-set filtering options to look into the 
kerning based on a specific factor. I found this selection useful, but it may not be exhaustive at all.
such as a list of exceptions, single pairs, very large kerning pairs, etc.


#### Buttons

`Delete Pairs`: Delete current pair across all UFOs  
`Average Pairs`: Set all pairs to their average value  
`Equalize Pairs`: Set all pairs to be the same value as the currently selected UFO  
`Interpolate Pair`: Interpolate selected pair(s)  
`+/- 10`: Increase/decrease all selected pairs by 10 units  
`+/- 10%`: These buttons are silly and not hooked up  


---

## Problems

- It is possible to show UFOs with incompatible kerning groups alongside each other, but this behavior is mostly untested (see #12)
- No undo (see #11, and the warning above)



## Note

Kern-A-Lytics is only compatible with Robofont 3.