Test inline PNG images

Using IMG tag

This first example is an indexed color (palette) image. It is interlaced, so suitable software can give a progressive display.

The picture shows a yellow octagonal cup on a salmon background;
a mint green sheet is folding itself over the top of the cup. Image generated
by the Computer Graphics Unit, University of Manchester

Technical details of this image, as reported by pngcheck 1.95:

File: nurbcup2si.png
  chunk IHDR at offset 0x0000c, length 13
  350 x 208 image, 8-bit colormap, interlaced
  chunk gAMA at offset 0x00025, length 4: 0.44843
  chunk PLTE at offset 0x00035, length 711: 237 palette entries
  chunk tEXt at offset 0x00308, length 56, keyword: Software
  chunk IDAT at offset 0x0034c, length 8192
  chunk IDAT at offset 0x02358, length 8192
  chunk IDAT at offset 0x04364, length 8192
  chunk IDAT at offset 0x06370, length 8192
  chunk IDAT at offset 0x0837c, length 575
  chunk tIME at offset 0x085c7, length 7: 14 Aug 1996 12:23:35 GMT
  chunk IEND at offset 0x085da, length 0
No errors detected in nurbcup2si.png.

The second example is a large truecolor image generated by a raytracer, and is a visualisation of a 6 by 6 by 6 color cube in CIE LUV color space.

The
picture shows a central grey axis and two chroma axes at right angles
to this. Colored balls represent each color point in the 'cube', and
clustering is clearly seen

Technical details of this image, as reported by pngcheck 1.95:

File: 666.png
  chunk IHDR at offset 0x0000c, length 13
  800 x 400 image, 24-bit RGB, interlaced
  chunk gAMA at offset 0x00025, length 4: 0.45000
  chunk cHRM at offset 0x00035, length 32
    White x = 0.283 y = 0.298,  Red x = 0.625 y = 0.34
    Green x = 0.285 y = 0.605,  Blue x = 0.15 y = 0.065
  chunk tEXt at offset 0x00061, length 56, keyword: Software
  chunk tEXt at offset 0x000a5, length 89, keyword: Comment
  chunk IDAT at offset 0x0010a, length 8192
  chunk IDAT at offset 0x02116, length 8192
  chunk IDAT at offset 0x04122, length 8192
  chunk IDAT at offset 0x0612e, length 8192
  chunk IDAT at offset 0x0813a, length 8192
  chunk IDAT at offset 0x0a146, length 8192
  chunk IDAT at offset 0x0c152, length 8192
  chunk IDAT at offset 0x0e15e, length 8192
  chunk IDAT at offset 0x1016a, length 8192
  chunk IDAT at offset 0x12176, length 8192
  chunk IDAT at offset 0x14182, length 3539
  chunk IEND at offset 0x14f61, length 0
No errors detected in 666.png.

You can also see the same images inlined using the embed and object tags. Check the HTML source, too.
Chris