Image formats
Short, practical notes — not marketing filler.
HEIC / HEIF
HEIC is the container iPhones often use for photos. Inside it is usually HEIF with efficient compression.
Transparency depends on the file; most phone photos are opaque.
Typically lossy. Labmorf decodes the first frame locally via WASM.
Great on Apple devices. For the open web and many Windows apps, convert to JPG, PNG, or WebP.
See HEIC→JPG/PNG/WebP/PDF and the /heic/ guide.
WebP
A modern Google format for photos and graphics, including transparency.
Supports an alpha channel.
Lossy or lossless. Often smaller than JPEG at similar visual quality.
A solid default for websites in current browsers.
Dedicated PNG/JPG↔WebP pages plus the universal converter.
AVIF
An AV1-based image format that can be smaller than WebP.
Transparency is supported; software support is narrower than WebP.
Usually lossy. Browser encoding is heavier — Labmorf loads the codec on demand.
When file size matters and your audience can open AVIF.
JPG/PNG→AVIF and AVIF→PNG/WebP/JPG.
PNG
Lossless raster format with transparency.
Full alpha support.
Lossless — photographic PNGs are often heavy.
Screenshots, UI, exact pixels.
PNG→WebP/JPG/AVIF/ICO plus compress/resize tools.
JPEG / JPG
The classic format for photographs.
No transparency — converting from PNG flattens alpha onto a background.
Lossy, with adjustable quality.
Wide compatibility, print, and older systems.
JPG↔WebP/PNG/AVIF and Compress Image.