Mime type force download

Learn more here. When you serve a document from a Web server, you might want to immediately prompt the user to save the file directly to the user's disk, without opening it in the browser. The range of valid values for content-disposition are discussed in Request for Comment RFC see the References section of this article.

This article focuses on the attachment argument, which instructs a user agent in this case, Internet Explorer to save a file to disk instead of saving it inline. When Internet Explorer receives the header, it raises a File Download dialog box whose file name box is automatically populated with the file name that is specified in the header. Note that this is by design; there is no way to use this feature to save a document to the user's computer without prompting for a save location.

There are two ways that you can use Internet Explorer to specify a content-disposition header for a file: dynamically and statically. Use the Response. Uploading of the specified file extension types is restricted. When the exclusion list validation is enabled in the Now Platform , use the glide.

Uploading of the specified file types is restricted. The specified files types are the only ones that can be downloaded as static content from an instance. You can enable set the property to true or disable set it to false MIME type validation for file attachments. How do I force files to open in the browser instead of downloading PDF? Ask Question. Asked 10 years, 7 months ago. Active 7 months ago. Viewed k times. I tried using the embed tag and an iframe, but it only works when that option is checked.

What can I do? Improve this question. Peter Mortensen Add a comment. Active Oldest Votes. Improve this answer. Quentin k gold badges silver badges bronze badges. ColinM ColinM Taboada but then the user's system may not know the file type. Perhaps if you want to override the user's preferences then octet-stream would be the way to go, but giving the correct type and a suggested filename is the "correct" way to provide a download. So my question is should the content type be set before uploading?

And also, we get only a link from the backend team, a url that gives the file path, that we open in new tab using:window. Kailas I don't understand what you're trying to do.. These headers have no effect on a file upload, you need to have the code behind the url set the headers every time it is downloaded by the client.

ColinM Thanks buddy, you said it right, the issue when we debugged was the mime type was set while uploading the files. This should be done by the back-end team. I tried to get codes on how to add headers in java script but was not successful. Thanks, as I got the real idea cleared from you Show 2 more comments.

It uses the custom filename specified on the view side. Christophe Roussy Christophe Roussy Akshay Akshay 3, 3 3 gold badges 33 33 silver badges 70 70 bronze badges. If you have control over the server code you should use 'attachement' as this will allow to use the same filename generation code. If you have no control over the server this is a good solution. This is a brilliant solution to the problem however, as always, IE is holding us back from using it: caniuse.

Important to note that this does not work across domains e. If downloading from one domain, the download attribute will not work if content is stored on a different domain. CORS may allow that content to pass through haven't tested. Yes figured! This is for ASP. FilePath, FileMode. Open, FileAccess. Leon van Wyk Leon van Wyk 8 8 silver badges 7 7 bronze badges.

Oops, there were typing errors in my previous post. Andrew Barber