> ## Documentation Index > Fetch the complete documentation index at: https://docs.getvector.me/llms.txt > Use this file to discover all available pages before exploring further. # Files in a dossier > Attach your own files to a competitor or feature dossier, use them in research, and find them again when you need them. Not everything you know about a [competitor](/competitors/add-competitors) is on the public web. A sales team's battle card, a recording of a competitor's demo, an analyst report, notes from a customer interview — keep them on the **Files** tab of the [competitor's dossier](/competitors/competitor-dossier) or a [feature's dossier](/features/feature-dossier), attached to exactly what they're about. Text files also feed the dossier's research. ## Attach a file Open the **Files** tab and drag a file in, or pick one from disk. You can attach markdown, plain text, PDFs, common office documents, images, audio, video and archives, up to 100 MB each. Anything else is refused at upload, with a message saying what's accepted. You see the upload's progress. If it fails or is interrupted, you're told so and can retry — a half-uploaded file never shows in the list. Add a short description to say what the file contains; it helps once the list grows. Two files can share a name — the upload date, uploader and description tell them apart. ## Open a file Click a file to view it without leaving the dossier: * Markdown and plain text show as formatted text. * Images show inline; audio and video play in place. * PDFs open page by page. Office documents, archives and SVG images can't be previewed; they offer **Download to view** instead. ## Download or delete a file Download any file to get it back exactly as you uploaded it. Delete one you no longer need — it disappears from the list at once and can't be downloaded afterwards. If research already drew on the file, those findings keep their attribution, marked as referring to a removed file, and research stops using it from then on. The same happens when the competitor or feature the file belonged to is removed. ## Use a file in research Markdown, plain text, PDF and Word (`.docx`) files also feed the dossier's research runs, the same way web sources do. After upload, such a file is processed so its content can be searched; until that finishes, you can open and download it, but research doesn't use it yet. When a research finding draws on one of your files, it's labeled as an **internal** source and names the file — never presented as something found on the web. The **Embedding** column shows where each file stands: | State | Meaning | | ---------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- | | ⏳ queued | Waiting to be processed | | ⟳ embedding… | Being processed | | ✓ embedded | Ready: research can use it | | ✕ failed | Processing failed. The error is shown; click **Reindex** to try again | | — not embeddable | A kind of file research can't read, such as video, audio, images, archives, spreadsheets or older office formats. It stays available to open and download | ## Where to go next The dossier these files attach to. Their own pages, saved in full.