Ask better questions about your documents
An attachment gives the assistant context. Your question tells it what to do with that context.
Nifftly supports PDF, DOCX, TXT, and CSV attachments in chat. The useful outcome does not come from attaching the biggest file. It comes from providing readable material and a specific task: summarize, compare, extract, explain, check, or transform.
Start with a clean source file
Use the original document when possible. Scanned PDFs, image-only charts, duplicate pages, and broken columns can make extraction less reliable. If a file contains a crucial table or visual, describe what you need checked and review that part yourself after the response.
For CSV files, use a clear header row and avoid mixing multiple unrelated tables in one sheet. For text documents, give sections descriptive headings. These small steps make it easier to identify what the data means.
Tell the assistant the job
“Summarize this” gives little direction. A better request says who the summary is for, what to prioritize, and what format is useful. You might ask for an executive brief, open questions, risks, key numbers, or differences between two versions.
Keep the focus manageable
Attachment text is included within the existing prompt budget. If a long document matters, identify the chapters, tables, or topics you want reviewed first. You can upload a shorter excerpt or ask the assistant to work through one section at a time. This helps keep the answer grounded in the material you actually care about.
For a data file, start with a narrow question such as “find the largest month-over-month change” or “list rows with a blank owner.” Once the result looks sensible, move to a broader analysis.
Protect sensitive information
Only attach information you are authorized to use. Remove unnecessary personal information, account credentials, secrets, and confidential material before sharing a file. If a document includes a legal, medical, employment, financial, or security decision, use AI as an aid to review and organize information, not as the final decision maker.
Attachments are for prompt context, not durable file storage. Keep your own source of record and preserve the original document outside the conversation.