# What can ZeroTwo do with the files I attach?

> Attach documents, spreadsheets, images, audio or video and ask ZeroTwo to find details, summarize, compare or extract from them.

Source: https://help.zerotwo.ai/en/articles/8982896-what-can-zerotwo-do-with-the-files-i-attach
Section: ZeroTwo > File uploads
Last updated: 2026-10-05

Once you attach a file, you can ask ZeroTwo about it in plain language. It can look for a specific detail, summarize a file, pull out data, or compare several files in one answer. The file stays available for the rest of the chat, so you can keep asking follow-up questions.

## Add the file

In the web and desktop apps you can add a file from the message box or by dragging it onto the chat.

- Select the + button in the message box. Its tooltip reads **Add files & more**. Choose **Files and folders** to pick files from your computer, or **Add from library** to reuse a file you already saved.
- Or drag a file onto the chat. ZeroTwo says **Drop any file here to add it to the conversation**.

You can attach up to 10 files to a message, and the Free plan allows 1 file per message. A few models do not accept attachments at all; with one of those selected, attaching files is turned off. For sizes, file types and fixes for failed uploads, see [File uploads in ZeroTwo: common questions](https://help.zerotwo.ai/en/articles/8555545-file-uploads-in-zerotwo-common-questions).

## What you can ask for

| You want to | Try asking |
| --- | --- |
| Find one detail | "What does the contract say about termination?" |
| Summarize | "Give me the key points of this report." |
| Compare files | "What changed between these two versions?" (attach both) |
| Extract data | "List every date and amount mentioned in this PDF." |
| Understand a picture | "What does the text in this screenshot say?" |
| Work from a recording | "Summarize this audio file." |

ZeroTwo decides how to read the file. For a question about a specific detail it can search the file for the passages that match, using both meaning and keywords. When you ask for a summary or the full content, it can read the file itself instead of searching it. You do not have to pick a mode.

Reading a file itself has a limit: ZeroTwo reads roughly the first 500,000 characters of a file's text. For a very long file, ask about a specific section instead of the whole thing.

## What ZeroTwo gets from each kind of file

When ZeroTwo reads a whole file for you, this is what comes back.

- Text and code files come through as text.
- PDF, Word, Excel and PowerPoint files come through as extracted text.
- Images are read for the text and content in them.
- Audio becomes a transcript.
- Video becomes an analysis plus a transcript.

Some models take certain files directly instead of going through that step. The model you pick can change how a file is read, so try another model if an answer misses something.

## Citations

When ZeroTwo draws on your files, its answer can include a small badge with the file's name. Select it to open the file.

## Files in projects and in your Library

ZeroTwo can search the files attached to the chat you are in and, inside a project, the project's files as well. To start a chat about a file you already saved, open its three-dot menu in the Library and choose **Chat about this**. A new chat opens with the file attached.

## When you want a new file, not just an answer

- For charts, calculations and cleaned-up data from a spreadsheet, see [How do I analyze spreadsheets and data files in ZeroTwo?](https://help.zerotwo.ai/en/articles/9213685-how-do-i-analyze-spreadsheets-and-data-files-in-zerotwo)
- To turn your material into a Word document, spreadsheet, slide deck or PDF, see [Making Word, Excel, PowerPoint and PDF files with Work](https://help.zerotwo.ai/en/articles/20001278-making-word-excel-powerpoint-and-pdf-files-with-work).

## Tips for better answers

- Say what you want back: a table, a short list, a one-paragraph summary.
- Name the part you care about, such as a section, a page or a column.
- For a chart or diagram inside a document, attach it as its own image. See [Does ZeroTwo read pictures inside documents and slide decks?](https://help.zerotwo.ai/en/articles/8983779-does-zerotwo-read-pictures-inside-documents-and-slide-decks)