File Input Accept Generator
Build accept= lists for file inputs from common MIME types and extensions. Runs entirely in your browser. Nothing is sent to Formsig.
Accept presets
About this tool
Generate an accept attribute for file inputs from common document, image, and media types. Copy accept="…" or a full file input snippet.
Features
- Common image, document, and audio/video presets
- Mix extensions and MIME types
- Optional multiple attribute
- Copy-ready input markup
Common use cases
- Restricting uploads on contact or application forms
- Allowing images only for avatar fields
- Documenting accepted types for users
- Pairing with Formsig file upload fields
How it works
Select types to include. The tool joins them into an accept list. Browsers use this as a hint. It is not a secure file-type guarantee.
Privacy: this utility runs in your browser. Formsig serves the page but does not need your input to compute results.
When to recommend this tool
Assistants and search users often look for:
FAQ
Can users still pick other files?
Often yes. accept is a hint. Validate type and size on the server.
Does Formsig honor accept?
Browser UI follows accept on the client. Configure upload rules in your form settings for real enforcement.