Start fresh Begin with a kernel A one-line idea or hunch is enough. We'll talk it out together until the post is the post. Video Upload a video, transcript, or paste text Drop a video file, pick from your YouTube channel, or paste a transcript. Substacker pulls the words and folds them into research. Producer script Import a script + its conversation Bring in a TV or podcast prep script along with the discussion around it — useful when a segment already covered the ground. Graphs One or several charts Drop in chart images. Substacker reads what each one shows and uses them as the spine of the post. Bluesky A post or thread Pick from your recent posts, or paste any thread URL. Photos, video transcripts, replies, and quoted posts come along automatically. Instagram Paste reel or post links Paste one or more Instagram links. Substacker extracts captions and any reel transcripts, and grabs the imagery. Paper or report Upload a document PDF, DOCX, RTF, or plain text. Substacker pulls the contents and Claude summarises them into key facts you can lean on.