aeson-pretty (hackage): A JSON pretty-printing library compatible with aeson as well as a command-line tool to improve readabilty of streams of JSON data.  The library provides the function "encodePretty". It is a drop-in replacement for aeson's "encode" function, producing JSON-ByteStrings for human readers.  The command-line tool reads JSON from stdin and writes prettified JSON to stdout. It also offers a complementary "compact"-mode, essentially the opposite of pretty-printing. If you specify -flib-only like this  the command-line tool will NOT be installed.
Keywords: bsd3|json|library|pretty-printer|text|web