What is a .AEPX file?
AEPX is the XML form of an After Effects project. Created and opened by Adobe After Effects.
- Did you know
- The XML project format behind .aepx arrived with After Effects CS4 in 2008, aimed at automation workflows where scripts edit project details without ever launching the application.
- AEPX is simply the XML-encoded form of an After Effects project, holding the same composition data as the binary AEP in readable text.
- After Effects stayed Mac-only for its first four years - the first Windows version, 3.1, did not ship until May 1997.
- As video editing
- Identify and read video-editing project files: Adobe After Effects (AEP, AET, AEPX) - walks the RIFX chunk tree for compositions, layers, effect match-names and asset paths; Adobe Premiere Pro / Elements (PRPROJ, PREL) - sequence, media-item and clip counts plus media paths; Sony / MAGIX VEGAS Pro (VEG, VF); DaVinci Resolve from Blackmagic Design (DRP, DRT); Wondershare Filmora (WFP, WSP); and CapCut drafts (draft_content.json) - canvas resolution, duration, tracks and material counts.
- As adobe
- Identify Adobe project files and read their metadata: Photoshop (PSD, PSB), Illustrator (AI), InDesign (INDD), After Effects (AEP, AEPX, AET) with composition / layer / effect and asset extraction, Premiere Pro and Elements (PRPROJ, PREL) with sequence and media counts, XD, Animate (FLA), and Lightroom.
- Depth of analysis
- .AEPX is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .AEPX file
- Drag a .AEPX file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.