Is PDF conversion the same as image extraction?+
PDF-to-image conversion renders a page composition at a selected pixel resolution. Text, vectors and interactions become pixels; this is different from extracting an embedded image. Page selection, crop, fonts, background and resolution are not defined by the future converter yet.
Which compression mode will HEIC use?+
HEIC commonly uses lossy HEVC; HEVC also has lossless coding tools. Actual quality, bit depth and chroma depend on the encoded profile and settings, not on the .heic extension. HEIC permits different encoding modes or container representations. Its format name alone does not promise lossless output, a quality setting or a size reduction. The future engine must choose a supported codec and sample representation; inspect the target’s compression notes below.
Are bit depth and colour values guaranteed to match?+
Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.
Will metadata and colour profiles be retained?+
PDF: Document information, XMP, ICC output intents → HEIC: Exif, XMP, ICC, NCLX. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.