system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Would Batman fabricate or re-create evidence to convict someone whom is 100% certainly guilty?

Or has he done this, in the past? We know he will disregard most laws and commit multiple crimes to bring someone to what he sees as "justice." Dangling someone off a skyscraper to encourage them to turn themselves in or inform on a partner in crime, for instance, is ludicrously criminal behavior.

As a for-instance: Lex Luthor admits a criminal scheme to Batman, or Batman witnesses the crime. Luthor then covers his tracks so well that it can never be traced back to him, as he often does. Does Batman's moral code allow him to beat confessions out of people (violent crime to bring a criminal to justice) but not straight up frame Luthor for a crime he 100% knows Luthor committed?

You have to figure, as the world's greatest detective, his frame-ups would be airtight.

Edit: Thanks for all of the discussion - it looks like he did something sort tangential to this in No Man's Land with forging notarizations on unauthorized copies of titles and deeds - enough for me to think forging evidence is a tool in his toolbox, to be taken out if he feels it's necessary to achieve justice.
gpt
Yes. During No Mans Land he created forgeries of the entirety of Gotham City municipalities paper records to prevent Luthor from fraudulently claiming ownership of city properties. This was after Luthor had hired Bane to destroy those records. This would have resulted in the majority of Wayne Corp real estate holdings becoming Lexcorp holdings.   
So imo he will stoop to fraud and forgery to win.