Files and PDFs: uploads, processing and limits
Attach a file, check processing and model support, and find the format limits or troubleshooting guidance you need.
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Read the image inside your PDF
Upload a file to Chat
Open Chat and use the attachment menu to add a file or choose one from your library. Wait for processing and confirm the attachment before sending a question.
Upload access and answer costs
Sign in to upload files; uploading does not require Plus. Model answers and optional tools follow their access and credit rules, while Work requires Plus. Review the estimate where shown and completed requests in Usage History. Uploading a file and paying for an AI answer are separate steps.
Common formats and size limits
The upload request has a 50 MB ceiling, with lower limits for many file types. The extension and detected content must match an accepted type. Use the limits below when preparing your file.
Selected accepted input types
| Item | Details |
|---|---|
| Up to 50 MB. Content/type checks and processing still apply. | |
| Word, Excel and PowerPoint | Common DOC/DOCX, XLS/XLSX and PPT/PPTX entries have a 25 MB type limit. |
| CSV/TSV | 25 MB entries; inspect encoding, column separators and units. |
| Plain text / Markdown | 10 MB entries; keep relevant text within the model context. |
| Common images | JPEG, PNG, GIF and WebP entries allow 25 MB; model vision support is separate. |
Processing and model context
An accepted upload can still be processing or fail to yield usable text. PDF handling can use extracted text or a supported model’s native input. Choose a model suited to the attachment and ask about relevant sections of a long document.
Scanned and protected PDFs
Check whether the file has usable text. Scans, unusual layouts and password protection can prevent useful processing. Try a readable version you have permission to use, or supply a relevant text excerpt.
Follow a PDF summary and revision
Follow a PDF from its first summary to a purchasing note. The lesson shows how to compare the answer with the source and keep missing information clear.
Source locations and numbers
Ask for a quotation or page number, then check it in your original file. Model-written references differ from automatic product citations. Recompute table totals and keep units, currency and optional items clear.
File context and privacy
Content from attached files may be sent to the selected model provider to answer your request. Review the privacy policy before sharing sensitive information. Deleting an account file does not automatically erase content already sent in earlier requests.
If a file is rejected or an answer is incomplete
For a rejected upload, confirm you are signed in and check its type, size and detected content. If processing fails, try a readable source or relevant text excerpt. If an answer misses details, ask about a smaller section and check that the model can use the attachment. Contact support with the error or request details if the problem continues.
Are all supported files allowed up to 50 MB?
No. There is a request ceiling and lower limits by type. Common Office and CSV inputs have 25 MB entries; text/Markdown entries have 10 MB limits.
Can every model analyze an attachment?
File acceptance and model input support are separate. Review the selected model and processing status; use an appropriate model or a readable excerpt when needed.
Will my file stay private from model providers?
File content used to answer a question may be sent to the selected provider. Consult the privacy policy and provider handling terms.
Guides and resources
Find more detail and choose your next step.