White Space Open Layout Percent Checker
Audit layout open area from caller already disjoint occupied regions and usable area in consistent square units; does not infer overlap unions, visual balance, universal white-space target or screen-reader accessibility.
Description
Open layout area is usable area minus disjoint occupied regions.
Open layout area is usable area minus disjoint occupied regions. Summing overlapping boxes would overcount occupancy.1
Enter positive usable area, nonnegative nonoverlapping areas and minimum fraction 0–1. Reject occupied total above usable; return area/share and inclusive policy flag.
When to use White Space Open Layout Percent Checker
Use White Space Open Layout Percent Checker when you need to evaluate the supplied records under the calculation and evidence rules below. Empty occupied lists are allowed. No overlap union, visual balance or accessibility assessment is performed.
Prepare the actual editorial, source, layout, timing or audience records requested. Supply explicit house-policy limits and preserve missing evidence.
How to use White Space Open Layout Percent Checker and understand its results
- Prepare the actual editorial, source, layout, timing or audience records requested. Supply explicit house-policy limits and preserve missing evidence.
- Enter pageUsableArea, nonoverlappingOccupiedAreas, callerMinimumOpenFraction using the field table and calculation rules, then run the tool.
- Read observedOpenArea, observedOpenFraction, meetsCallerOpenLayoutPolicy. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| pageUsableArea | Page usable area | number | Required |
| nonoverlappingOccupiedAreas | Nonoverlapping occupied areas | list of number | Required |
| callerMinimumOpenFraction | Caller minimum open fraction | number | Required |
Enter positive usable area, nonnegative nonoverlapping areas and minimum fraction 0–1. Reject occupied total above usable; return area/share and inclusive policy flag.
open=usable−sum(occupied); share=open/usable Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedOpenArea | Observed open area | number |
| observedOpenFraction | Observed open fraction | number |
| meetsCallerOpenLayoutPolicy | Meets caller open layout policy | boolean |
{
"input": {
"pageUsableArea": 100,
"nonoverlappingOccupiedAreas": [
30,
20
],
"callerMinimumOpenFraction": 0.4
},
"output": {
"observedOpenArea": 50,
"observedOpenFraction": 0.5,
"meetsCallerOpenLayoutPolicy": true
}
}Limitations and assumptions
Empty occupied lists are allowed. No overlap union, visual balance or accessibility assessment is performed.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use Broadsheet Tabloid Fold Column Inches Map: Above-fold allocation depends on measured rectangular columns and a specific fold depth. Width-scaled amounts are areas in square inches. For a complementary task, use Widow Orphan Line Flag Checker: Paragraph fragments must be assessed using actual typeset line counts. This tool names a short first fragment orphan and a short last fragment widow.
References
-
White Space Open Layout Percent Checker — tool.io
Similar or alternative tools
- Broadsheet Tabloid Fold Column Inches Map
Above-fold allocation depends on measured rectangular columns and a specific fold depth. Width-scaled amounts are areas in square inches.
- Widow Orphan Line Flag Checker
Paragraph fragments must be assessed using actual typeset line counts. This tool names a short first fragment orphan and a short last fragment widow.