Dapple accepts the major file formats across images, video, audio, documents, and text on every submission form. You configure which types each File Upload field accepts (and the maximum size) when you build the form. This article is the full reference of supported formats. If you need a format that's not listed, contact support — we can usually add it.
How do file type options work?
Each file field gives you three ways to control uploads:
Any File Type — Applicants can upload any file.
A file group — Applicants can upload any format in that group, e.g. Images accepts .png, .jpg, .gif and more.
A specific file type — Applicants can upload one format only, e.g. PDF (.pdf).
You pick one option per field. To accept, say, a PDF statement and a set of images, add two separate file fields.
Which file groups can I choose?
Group | Accepted extensions |
Images | .gif, .jpeg, .jpg, .png, .svg, .webp |
Audio | .mp3, .wav, .ogg, .flac, .aac, .m4a |
Video | .mov, .mp4, .avi, .mkv, .webm, .flv |
Documents | .doc, .docx, .pdf, .txt, .rtf, .odt |
Spreadsheets | .xls, .xlsx, .csv, .ods, .numbers |
Archives | .zip, .rar, .7z, .tar, .gz, .bz2 |
Which specific file types can I choose?
Choose a specific file type when you need every submission in the same format.
Category | File type | Extension |
Document | ||
Document | Word document (older format) | .doc |
Document | Word document | .docx |
Document | Plain text | .txt |
Image | PNG image | .png |
Image | JPG image | .jpg |
Image | JPEG image | .jpeg |
Image | GIF image | .gif |
Image | WebP image | .webp |
Image | SVG image | .svg |
Video | MP4 video | .mp4 |
Video | MOV video | .mov |
Video | WebM video | .webm |
Audio | OGG audio | .ogg |
Audio | WAV audio | .wav |
Audio | AAC audio | .aac |
Spreadsheet | Excel spreadsheet (older format) | .xls |
Spreadsheet | Excel spreadsheet | .xlsx |
Spreadsheet | CSV spreadsheet | .csv |
Presentation | PowerPoint presentation (older format) | .ppt |
Presentation | PowerPoint presentation | .pptx |
Are any formats only available as a group or as a specific type?
Yes. A few formats are only available one way:
Group only: .flac, .m4a, .avi, .mkv, .flv, .rtf, .odt, .ods, .numbers and all archive formats (.zip, .rar, .7z, .tar, .gz, .bz2). Select the matching group to accept these.
Specific type only: PowerPoint (.ppt, .pptx). These aren’t part of the Documents group, so select them individually.
How do I set which file types a field accepts?
Open your project and go to Form Builder.
Click the file field you want to edit. The Edit File Field panel opens.
Select the File Types tab.
Choose Any File Type, a group under Allowed File Types, or a single format under Specific File Types.
Click Save changes.
The field on your form updates to show what it accepts, e.g. “accepts pdf”. Each field has its own rules, so one field can accept Images while another accepts PDF only.
What’s the maximum file size?
File uploads accept up to 1 GB per file by default. For very large uploads, such as 4K video or high-resolution image sets, set the field’s limit deliberately and tell Applicants what size to expect in the field description. Larger files take longer to upload, especially on mobile.
What if I need a file type that isn’t listed?
Contact support. We can usually add common formats on request, especially for fields like architecture, music production or 3D design, where standard formats sit outside this list.
Best practice for file uploads
Restrict file types deliberately. If you only want PDFs, choose PDF (.pdf) rather than Any File Type.
Use a group when Applicants work in different tools, e.g. Images for artwork that might be PNG or JPG.
Use a specific type when reviewers need consistency, e.g. PDF only for CVs or budgets.
Use Archives sparingly. Reviewers have to download and unzip them before they can see the contents.
Add a clear instruction to each file field, e.g. “PDF, max 10 MB”.
Test each field with a real file before you open the project.