Image Format
APNG
Lossless Image Format for still & animated images
AVIF
based on AV1 Codec, 10-bit color, HDR, chroma 4:4:4, royalty-free, current king albeit low support
Bitmap
Raster Image Format usually uncompressed
GIF
popular Image format for simple animated & still images
ICO
Windows OS desktop icon, for Browser as favicon.ico
JPEG XL
proposed next-gen lossless still image format extends JPEG backwards compat
Sources: jpeg.org/items/20180423 jpeg.org/jpegxl/
JPEG
Popular Lossy still Image File Format
PNG
Still image format with Lossless Compression. Portable. Royalty-free ISO standard.
SVG
(standard) 2D image express by XML text as Scalar Vector
Source: W3C SVG Working Group
TIFF
Raster Image Format for static image with poor/no compression
WebP
Lossy Image Format for still & animated images