What is the max number of files to select in an HTML5 [multiple] file input?

by

why this many files?

The number of files depends on the number of characters all file names are combined.

Why this max?

In the Windows API, the maximum path length limitation is 256 chars, the Unicode version API is 32,767 chars.

Chrome simply sets the max path length of the Unicode version API, so it’s about 32k chars as you observed.
Check this fix: https://code.google.com/p/chromium/issues/detail?id=44068

Firefox dynamically allocates a buffer big enough to hold the size of multiple selected files, which could handle much larger path length.
Check this fix: https://bugzilla.mozilla.org/show_bug.cgi?id=660833

Is it OS dependent or browser dependent?

Both.

Where do I find the specs for that?

For Windows API usage and reference:
http://msdn.microsoft.com/en-us/library/aa365247.aspx (Maximum Path Length Limitation)
http://msdn.microsoft.com/en-us/library/ms646839(VS.85).aspx

Is it JS’ fault?

No.

More Related Contents:

  1. restrict file upload selection to specific types
  2. vs. . Which to use?
  3. How to get the file path from HTML input form in Firefox 3
  4. HTML input – name vs. id [duplicate]
  5. Get the value in an input text box
  6. What’s the proper value for a checked attribute of an HTML checkbox?
  7. How to customize ?
  8. Disable Auto Zoom in Input “Text” tag – Safari on iPhone
  9. Remember and Repopulate File Input [duplicate]
  10. Why is form enctype=multipart/form-data required when uploading a file?
  11. Why is HTML5 input type datetime removed from browsers already supporting it?
  12. How to set default value to the input[type=”date”] [duplicate]
  13. how to POST/Submit an Input Checkbox that is disabled?
  14. Change the “No file chosen”:
  15. HTML5 drag and drop file upload to Java Servlet
  16. HTML – Display image after selecting filename [duplicate]
  17. Input type DateTime – Value format?
  18. How to add button inside input [closed]
  19. Large file upload though html form (more than 2 GB)
  20. HTML5 Email input pattern attribute
  21. Bootstrap 3 – How to maximize input width inside navbar
  22. What characters are allowed in the HTML Name attribute inside input tag?
  23. Upload a whole directory through an HTML form
  24. HTML: Characters allowed for name attribute of input element?
  25. Thymeleaf – How to add checked attribute to input conditionally
  26. Filter Extensions in HTML form upload [duplicate]
  27. HTML5 File API downloading file from server and saving it in sandbox
  28. Drop Down Menu/Text Field in one
  29. Button type “button” vs. “submit” [duplicate]
  30. How to reset ReactJS file input

Leave a Comment