dynamic-range:high Media Lookup
Media dynamic-range capability token, not an assertion that an image is HDR or is displayed with particular luminance. Explicit supplied computed/layout context only; not a browser cascade/layout engine or cross-browser guarantee.
Description
Dynamic-range media features describe reported display capability.
Dynamic-range media features describe reported display capability.1
A high capability label does not establish that particular content or styling uses HDR correctly. Use dynamic-range:high Media Lookup to look up a supported term.
When to use dynamic-range:high Media Lookup
Use dynamic-range:high Media Lookup to look up a supported term. Choose the exact supported token from the table; preserve its punctuation and capitalization.
How to use dynamic-range:high Media Lookup and understand its results
- Choose the exact supported token from the table; preserve its punctuation and capitalization.
- Enter Dynamic range using the field table and validation rules below, then run the tool.
- Read Meaning and interpret units, signs, ordering and placeholders as explained below.
- If the tool reports an input error, correct that field and rerun. A successful false result, empty match list or unknown-evidence placeholder has the specific meaning described here; check the limitations before applying the result.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| dynamicRange | Dynamic range | string | Required; constraints below |
Enter one of the exact supported dynamicRange tokens in the table below. The implementation performs a case-sensitive lookup and returns the stored meaning without interpreting a stylesheet, audio recording or performance. Unsupported tokens, added whitespace and alternate capitalization are input errors. The entries describe a bounded vocabulary rather than every valid value in the wider topic.
meaning = storedTable[exactSupportedToken] Field order, units and branch conditions follow the implementation explanation above.
| Exact supported token | Stored meaning |
|---|---|
| standard | standard brightness/contrast and color-depth capability |
| high | high brightness/contrast and color-depth capability reported |
| Output field | Meaning | Value type |
|---|---|---|
| meaning | Stored explanation for the exact supported token. | string |
{
"input": {
"dynamicRange": "high"
},
"output": {
"meaning": "high brightness/contrast and color-depth capability reported"
}
}Limitations and assumptions
A high capability label does not establish that particular content or styling uses HDR correctly. Apply the exact scope and assumptions described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are stated above; extremely large inputs or outputs can also be rejected. These errors differ from successful results such as false, no matches or unknown evidence.
Alternative or Complementary methods
Use prefers-color-scheme Query Pattern for a related task: Preferred color-scheme queries express a reported light or dark preference.
Use inverted-colors Media Lookup for a related task: An inverted-colors query concerns display color inversion.
References
-
dynamic-range:high Media Lookup — tool.io
Similar or alternative tools
- prefers-color-scheme Query Pattern
Preferred color-scheme queries express a reported light or dark preference.
- inverted-colors Media Lookup
An inverted-colors query concerns display color inversion.