PdfRasterDiskFormat enum

Serialized representation of a full-resolution page raster on disk.

Neither choice dominates - see the encoding measurements in test/benchmark_full_raster_disk_test.dart and the summary in doc/dev-log/2026-07-29-persistent-full-raster-disk-tier.md:

• png is 3-15x smaller on vector/CAD and form pages (large flat areas compress hard), so far more pages fit a given byte budget - at the cost of a real encode on the store path and a real decode on the load path.
• rawRgba is width * height * 4 bytes with no compression work at all. On photo/scan pages, where PNG barely compresses, it is both smaller in CPU and competitive in size, and its decode is a straight buffer upload.

png is the default because the byte budget, not the CPU, is what usually bounds how much of a document survives to the next session.

Inheritance

• Object
• Enum
• PdfRasterDiskFormat

Available extensions

• EnumName

Values

png → const PdfRasterDiskFormat

Lossless PNG via ui.ImageByteFormat.png.

rawRgba → const PdfRasterDiskFormat

Uncompressed premultiplied RGBA via ui.ImageByteFormat.rawRgba.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

index → int

A numeric identifier for the enumerated value.

no setter, inherited

name → String

Available on Enum, provided by the EnumName extension

The name of the enum value.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

values → const List<PdfRasterDiskFormat>

A constant List of the values in this enum, in order of their declaration.