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FDX

aka Final Draft format · Final Draft XML

Final Draft's proprietary XML screenplay file format — the industry-default exchange format for sending screenplays between writers, agents, and production offices.

FDX is the file extension Final Draft uses. Under the hood it's XML, which is why other tools can read and write it. For decades it's been the de-facto interchange format for professional screenwriting — every agent, every studio, every production office knows how to open a .fdx. StoryboardCanvas Script imports FDX (preserving revision colours, scene numbers, dual dialogue, and locked pages) and exports back to FDX so writers can hand off to whoever they need.