All details of changes made to the Thor Ragnarok (2017) WEB-DL can be found in the torrent file listing.
English and Spanish subtitles are also included, as well as the 5.1 audio track from the WEB-DL and chapter listings.
Here are some screencap comparisons for this release:
WEB-DL 1:
Regraded 1:

WEB-DL 2:

Regraded 2:

WEB-DL 3:

Regraded 3:

WEB-DL 4:

Regraded 4:

WEB-DL 5:

Regraded 5:

WEB-DL 6:

Regraded 6:

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, RefFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 10 min
Bit rate mode : Variable
Bit rate : 11.0 Mb/s
Maximum bit rate : 16.0 Mb/s
Width : 1 920 pixels
Height : 800 pixels
Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 2 h 10 min
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 359 MiB (4%)
Language : English
Service kind : Complete Main
Default : Yes
Forced : No