Uppercase Acronym Tracking Increase
Add caller chosen uppercase-acronym tracking adjustment; no font-specific recommendation.
Description
Add a caller-selected acronym tracking increment to an existing em value.
Tracking adjustments can be represented as additions in em units. This tool combines an existing setting with a caller-selected increment for an acronym treatment.
When to use this tool
Add a caller-selected acronym tracking increment to an existing em value. Use it when the input measurements and conventions below match the operation you need.
- Prepare existingTrackingEm, callerIncreaseEm, respecting the measurement basis and boundaries below.
- Compare the worked example with your intended operation before reusing its result.
How to use the tool and how it works
- Enter every field in the input table using the stated units and exact supported selector spelling where applicable.
- Run the tool. Correct input errors before interpreting an output.
- Read the result fields below; use accompanying flags and the stated sign, boundary or model convention when interpreting a number.
The tool adds existingTrackingEm and callerIncreaseEm, preserving their signs, and returns the resulting tracking in em units.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| existingTrackingEm | Existing tracking em. Em units. | Finite number |
| callerIncreaseEm | Caller increase em. Em units. | Finite number |
| Output field | Interpretation |
|---|---|
| result | Object containing the following named result fields. |
| result.adjustedTrackingEm | Adjusted tracking em; use the stated units and sign convention. |
{
"input": {
"existingTrackingEm": 0.02,
"callerIncreaseEm": 0.03
},
"output": {
"result": {
"adjustedTrackingEm": 0.05
}
}
}Limitations and assumptions
- No text is inspected to identify uppercase acronyms. It does not select a typographic rule, convert to pixels or predict shaped line breaks.
- Every declared field is required and unexpected fields are rejected. Numeric inputs must be finite; input errors are distinct from a valid false result or an explicitly qualified output.
- Extremely large inputs and nonfinite or excessively large outputs are rejected. List positions reported by the tool use zero-based indices unless stated otherwise.
Alternative or Complementary methods
Compare the metric calculation with the intended font and rendered text. Font shaping and layout inspection are more appropriate when the task depends on actual glyph positions or reading conditions. Compare the scope of the nearby tools below before substituting one.
References
Similar or alternative tools
- letter spacing points from tracking
Letter spacing in points from tracking in thousandths of an em and font size in points.
- tracking em letter spacing
CSS letter spacing in pixels from font size and tracking expressed in em units.