Uploading
Drag files into the conversation, or use the upload control in the message box. Several files upload at once, each with its own progress.Previewing
Files preview without leaving the conversation:- Spreadsheets — xlsx, xls, and xlsm render with their styles and sheet tabs
- Presentations — ppt and pptx decks preview page by page
- PDFs, images, and documents — inline
- Open any file in a larger preview when the inline one is too small
What Concord does with a file
Reads it. Attach a brief and ask Concord to build the campaign structure from it. It reads the whole document rather than asking you to re-enter the details. Reads spreadsheets sheet by sheet. For a workbook, Concord works with individual sheets, so a media plan spread across several tabs is usable directly. Edits it. Concord can edit a spreadsheet and hand it back, preserving cell styles, column widths, and formatting. Produces one. Ask for an export and Concord writes an xlsx file into the conversation.Shared links
Paste a public Dropbox link in the conversation and Concord reads the file from it. A file that requires signing in cannot be reached from a link: download it and attach it to the conversation instead.Targeting lists
A targeting list is a named set of targeting values your team owns — an inclusion list, an exclusion list, a set of postal codes, a list of apps or domains. Attach a compatible file and Concord detects the list and shows it in its own card in the conversation’s side panel. You can also create one by asking: “Save these 400 postal codes as a targeting list called FR Metro Q3.” Open the card to review the list: its type, its description, and each value with its label. A value Concord could not match to a platform id is flagged, because it is left out of the campaign’s targeting. To add or remove entries, ask in the conversation, then reference the list when building or updating a campaign. It is worth using for two reasons. A list is written once and applied many times, which removes the two most common setup errors — a value transcribed wrong, and a list that has drifted between campaigns. And it makes an exclusion policy auditable: when a client requires a brand safety list on every placement, a named list Concord applies is checkable, where a block of values pasted into each campaign is not.Every platform caps how many targeting criteria one object can hold. On Snapchat, an ad squad above 500 criteria stops being editable through the API — split large lists across several ad squads.