Google Forms File Upload: How to Add It, Where Files Go, and Why It Is Greyed Out
Dvir Atias
Jul 14, 2026
Google Forms File Upload
To collect files through Google Forms, add a question and change its type to File upload. When you do, Forms warns you that anyone answering will have to sign in to a Google account, because uploaded files are saved into your Google Drive and have to be attributed to an account. That sign-in requirement is the single fact that explains almost everything else about this feature, including the reason it sometimes appears greyed out and cannot be selected.
File upload is genuinely useful for collecting homework, permission slips, photos of work, or documents, and it is built into Google Forms with no add-on needed. It also has more conditions attached than any other question type. This guide covers how to add it, where the files go, the limits you can set, and a full section on why the option is greyed out when you cannot pick it.
How to add a file upload question
- Open your form in edit view and add a new question with the plus button.
- Click the question type dropdown (the menu that usually says "Multiple choice").
- Choose File upload from the list.
- Read the notice that appears. It tells you respondents must sign in to Google to upload, and that files count against your Drive storage. Confirm to continue.
- Set your allowed file types, number of files, and maximum file size (covered below).
Once the question is in place, anyone filling out the form sees an upload button instead of a text box, and they attach files directly from their device or their own Drive.
Respondents must sign in to Google
There is no way around this: to upload a file, the person answering must be signed in to a Google account. Google needs an account to attach the file to and a place to store it, so anonymous file uploads are not possible. Before you share a file-upload form, make sure everyone who needs to answer actually has a Google account and can sign in, otherwise they will be stopped at the upload step.
This matters most for forms aimed at families or the general public, where you cannot assume everyone has a Google login. If some of your audience has no account, a file upload question will exclude them.
Where uploaded files go
Every file people submit lands in your Google Drive, not theirs. Google Forms automatically creates a folder for the form and drops each submission's files inside it, usually named after the question. This has two consequences worth planning for:
- The files count against your Drive storage, not the respondent's. A class uploading large videos can fill your quota quickly, so keep an eye on space.
- You own and manage the files. You can open, download, organize, or delete them from Drive like any other file, and they stay there even if you later delete the form question.
Size, type, and count limits you can set
When you build the question, Google Forms lets you constrain what people can send:
- Allowed file types. You can let respondents upload anything, or restrict to specific kinds such as documents, spreadsheets, PDFs, images, videos, or presentations. Restricting types keeps out formats you cannot open.
- Number of files. You can allow a single file or several per respondent, choosing from the preset counts Google offers.
- Maximum file size. You can set a per-file ceiling from small preset sizes up to a large maximum, and there is also an overall storage cap tied to the total the form can collect. Setting a sensible size limit stops one enormous upload from eating your Drive space.
Choose the tightest limits that still let students submit what you actually need. A form that only needs a single PDF should be set to one file, PDF only, with a modest size cap.
Google Forms file upload greyed out
If File upload appears in the question type list but you cannot click it, or it does not appear at all, the cause is almost always about accounts and sign-in rather than a bug. Work through these:
- The form is set to accept responses without sign-in. File upload requires respondents to sign in so files can be stored and attributed. If your form is configured for anonymous or open responses where people are not signing in, Forms greys out the file upload option because it cannot function without an identifiable account. Enabling sign-in on the form generally restores it.
- Your Workspace organization has disabled it. Schools and companies on Google Workspace can turn off file uploads through their admin console, or block receiving files from people outside the organization. If your admin has done this, the option is greyed out and no form setting on your end will re-enable it. This is the most common cause in school accounts, and the fix is an admin change, not a form change.
- You are collecting from people outside your domain. If your form is shared with respondents outside your Workspace organization and your admin restricts external file collection, Forms disables the upload question for that form because outside users cannot upload into your managed Drive under that policy.
- Account type mismatch. Uploading is tied to Google accounts on both sides. A form built to be answered by people who cannot or will not sign in leaves Forms with nowhere to put the file, so the option stays greyed out.
The through-line is consistent: file upload needs a signed-in respondent and a Drive to store into. Whenever either of those is blocked, by your form settings or by an admin policy, the option greys out. Check your sign-in setting first, and if the form is on a school or work account and the setting looks fine, ask your Workspace admin whether file uploads are restricted.
If the real goal is simply to build the form itself from material you already have, that is a separate step from collecting files. You can convert a Word doc to a Google Form by uploading the document and getting back an editable Google Form, then add a file upload question to it once the questions are in place.
Quick answers
How do I add a file upload to Google Forms? Add a question, open the question type dropdown, and choose File upload. Confirm the sign-in notice, then set your file type, count, and size limits.
Do people need a Google account to upload a file? Yes. Uploading requires the respondent to sign in to a Google account, so anonymous file uploads are not possible.
Where do uploaded files go? Into the form owner's Google Drive, in a folder Forms creates automatically. The files count against your Drive storage, not the respondent's.
Why is file upload greyed out in my Google Form? Usually because the form allows responses without sign-in, or because your Workspace admin has disabled file uploads or external file collection. Check your sign-in setting first, then ask your admin.
Can I limit the file type and size? Yes. When you create the question you can restrict allowed file types, set how many files each person can send, and cap the maximum file size.
Can students outside my school upload files? Only if your Workspace admin allows external file collection. Many organizations block it, which greys out the upload question for forms shared outside the domain.
Ready to transform your documents?
Convert Google Docs, PDFs, and spreadsheets into Google Forms in one click.
Start free →Or go straight to a converter: Google Docs to Forms, PDF to Google Form, Word to Google Form, Google Forms Quiz Generator
The bottom line
Google Forms file upload is a built-in question type that quietly reshapes your form: it forces every respondent to sign in and it routes their files into your Drive, where they count against your storage. Set tight type, count, and size limits so a few large uploads do not overwhelm your quota. And if the option is greyed out, do not look for a hidden bug. It is almost always sign-in being off on the form or a Workspace admin policy blocking uploads, and the fix is either flipping on sign-in or asking your admin, not fighting the form.
Ready to transform your documents?
Convert Google Docs, PDFs, and spreadsheets into Google Forms in one click.
Start free →Or go straight to a converter: Google Docs to Forms, PDF to Google Form, Word to Google Form, Google Forms Quiz Generator