Answer by SvenS for How to find/identify large commits in git history?

For Windows, I wrote a Powershell version of this answer:

function Get-BiggestBlobs {  param ([Parameter(Mandatory)][String]$RepoFolder, [int]$Count = 10)  Write-Host ("{0} biggest files:" -f $Count)  git -C $RepoFolder rev-list --objects --all | git -C $RepoFolder cat-file --batch-check='%(objecttype) %(objectname) %(objectsize) %(rest)' | ForEach-Object {    $Element = $_.Trim() -Split '\s+'    $ItemType = $Element[0]    if ($ItemType -eq 'blob') {      New-Object -TypeName PSCustomObject -Property @{          ObjectName = $Element[1]          Size = [int]([int]$Element[2] / 1kB)          Path = $Element[3]      }    }  } | Sort-Object Size | Select-Object -last $Count | Format-Table ObjectName, @{L='Size [kB]';E={$_.Size}}, Path -AutoSize}

You'll probably want to fine-tune whether it's displaying kB or MB or just Bytes depending on your own situation.

There's probably potential for performance optimization, so feel free to experiment if that's a concern for you.

To get all changes, just omit | Select-Object -last $Count.
To get a more machine-readable version, just omit | Format-Table @{L='Size [kB]';E={$_.Size}}, Path -AutoSize.