As of v1.1.1, the textureinfo command-line supports KTX files. You can grab the latest source code from this GitHub repo.
Examples
Printing to stdout
$ ./textureinfo ~/Downloads/Textures/*
========================================
/Users/joe/Downloads/Textures/GnomeWood.pvr
========================================
Container: PVR (v3)
Compressed format: PVRTCI_4bpp_RGBA
Channel name [0]: -
Channel name [1]: -
Channel name [2]: -
Channel name [3]: -
Bits per-pixel [0]: -
Bits per-pixel [1]: -
Bits per-pixel [2]: -
Bits per-pixel [3]: -
Color space: lRGB
Channel type: UnsignedByteNorm
Width: 1024
Height: 1024
Depth: 1
Array size: 1
Number of faces: 1
Number of MIP maps: 11
Flags: 0
Meta data size: 15
========================================
/Users/joe/Downloads/Textures/GnomeWood_legacy.pvr
========================================
Container: PVR (legacy)
Format: GL_PVRTC4
Number of bits: 4
Width: 1024
Height: 1024
Array size: 1
Number of MIP maps: 11
Red mask?: False
Green mask?: False
Blue mask?: False
Alpha mask?: True
Magic number: 559044176
Flags: MIP_MAP|HAS_ALPHA|VERTICAL_FLIP|
Data size: 699136
========================================
/Users/joe/Downloads/Textures/arial_36.pvr
========================================
Container: PVR (v3)
Compressed format: -
Channel name [0]: l
Channel name [1]: a
Channel name [2]: -
Channel name [3]: -
Bits per-pixel [0]: 8
Bits per-pixel [1]: 8
Bits per-pixel [2]: -
Bits per-pixel [3]: -
Color space: lRGB
Channel type: UnsignedByteNorm
Width: 256
Height: 512
Depth: 1
Array size: 1
Number of faces: 1
Number of MIP maps: 10
Flags: 0
Meta data size: 4035
========================================
/Users/joe/Downloads/Textures/GnomeWood.ktx
========================================
Container: KTX
glFormat: 0 (compressed format)
glInternalFormat: COMPRESSED_RGBA_PVRTC_4BPPV1_IMG
glBaseInternalFormat: GL_RGBA
glType: 0 (compressed format)
glType size: 1
Width: 1024
Height: 1024
Depth: 0
Array size: 0
Number of faces: 1
Number of MIP maps: 11
Bytes of key value data: 32
Endianness: 67305985
========================================
/Users/joe/Downloads/Textures/GnomeWoodRGBA5551.ktx
========================================
Container: KTX
glFormat: GL_RGBA
glInternalFormat: GL_RGB5_A1
glBaseInternalFormat: GL_RGBA
glType: GL_UNSIGNED_SHORT_5_5_5_1
glType size: 2
Width: 1024
Height: 1024
Depth: 0
Array size: 0
Number of faces: 1
Number of MIP maps: 11
Bytes of key value data: 32
Endianness: 67305985
Printing to CSV
$ ./textureinfo ~/Downloads/Textures/* --csv
$ cat pvrLegacy.csv
File name,Format,Number of bits,Width,Height,Array size,Number of MIP maps,Red mask?,Green mask?,Blue mask?,Alpha mask?,Magic number,Flags,Data size,
/Users/joe/Downloads/Textures/GnomeWood_legacy.pvr,GL_PVRTC4,4,1024,1024,1,11,False,False,False,True,559044176,MIP_MAP|HAS_ALPHA|VERTICAL_FLIP|,699136,
$ cat pvrV3.csv
File name,Compressed format,Channel name [0],Channel name [1],Channel name [2],Channel name [3],Bits per-pixel [0],Bits per-pixel [1],Bits per-pixel [2],Bits per-pixel [3],Color space,Channel type,Width,Height,Depth,Array size,Number of faces,Number of MIP maps,Flags,Meta data size,
/Users/joe/Downloads/Textures/GnomeWood.pvr,PVRTCI_4bpp_RGBA,-,-,-,-,-,-,-,-,lRGB,UnsignedByteNorm,1024,1024,1,1,1,11,0,15,
/Users/joe/Downloads/Textures/arial_36.pvr,-,l,a,-,-,8,8,-,-,lRGB,UnsignedByteNorm,256,512,1,1,1,10,0,4035,
$ cat ktx.csv
File name,glFormat,glInternalFormat,glBaseInternalFormat,glType,glType size,Width,Height,Depth,Array size,Number of faces,Number of MIP maps,Bytes of key value data,Endianness,
/Users/joe/Downloads/Textures/GnomeWood.ktx,0 (compressed format),COMPRESSED_RGBA_PVRTC_4BPPV1_IMG,GL_RGBA,0 (compressed format),1,1024,1024,0,0,1,11,32,67305985,
/Users/joe/Downloads/Textures/GnomeWoodRGBA5551.ktx,GL_RGBA,GL_RGB5_A1,GL_RGBA,GL_UNSIGNED_SHORT_5_5_5_1,2,1024,1024,0,0,1,11,32,67305985,