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BFG Repo-Cleaner

BFG Repo-Cleaner is a good tool to clean up a Git repository before sharing.

Removes large or troublesome blobs like git-filter-branch does, but faster. And written in Scala.

$ bfg --strip-blobs-bigger-than 100M --replace-text banned.txt repo.git

Replace all passwords and listed in a file (prefix lines ‘regex:’ or ‘glob:’ if required) with


wherever they occur in your repository :


$ bfg <strong>--replace-text passwords.txt</strong>  my-repo.git

Delete all files named ‘id_rsa’ or ‘id_dsa’ :


$ bfg <strong>--delete-files id_{dsa,rsa}</strong>  my-repo.git


Using BFG on Windows:

java -jar bfg.jar $*

  • Make a replace.txt file:
PASSWORD        # Replaces PASSWORD with ***REMOVED***
PASSWORD==>     # Replaces PASSWORD with blank
                # You can use Regular Expressions also
  • Run this command in the repo folder from Git Bash or Win10 Bash:

bfg –replace-text replace.txt

  • When bfg is done run these commands

git reflog expire –expire=now –all && git gc –prune=now — aggressive

git push                   # -f may be needed


  • I had already pushed the repo and shared it.  That got complicated by multiple branches.  My fault.  It would have been much simpler to run bfg before sharing.
  • I fumbled a bit trying to get bfg running in Windows command shell.


Posted in programming.