BibTeX bereinigen und standardisieren.

Convert quoted values to braces

Strip braces/quotes from numbers and months

Use tabs instead of spaces for indentation

Insert empty line between entries

Add comma after last field in each entry

Lowercase field names and entry types

Sort entries by citation key

Sort fields within each entry in a standard order

Convert months to three-letter abbreviations (jan, feb, ...)

Escape umlauts and other special characters for LaTeX

Percent-encode invalid URL characters

Remove extra braces from {{value}}

Convert ALL CAPS values to Title Case

Remove fields with empty values

Keep only one of each field per entry

Remove all comments from the BibTeX source

Remove excess whitespace around comments