Will HEIF remain scalable vector artwork?+
Rendering SVG to HEIF fixes the artwork on a pixel grid. Paths and text no longer scale as editable vector objects. Fonts, linked resources, viewport, resolution and any animation time need explicit rendering choices; scripts and interactions do not become equivalent raster behaviour.
Which compression mode will HEIF use?+
HEIF defines the container. Compression may be lossy, lossless or uncompressed depending on its codec binding; one global quality or bit-depth value would be misleading. HEIF 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?+
SVG: XML metadata, title, desc → HEIF: Exif, XMP, ICC, NCLX. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.