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This article describes how Microsoft has improved the performance of the HTTP file upload algorithm in Windows Internet Explorer 7. Uploading files is faster in Internet Explorer 7.
Internet Explorer 7 improves the way that large files are uploaded when you use the HTTP file upload feature. In earlier versions of Internet Explorer, an upload operation may take a long time to finish when you upload a file that is larger than one megabyte. Internet Explorer 7 uses an improved algorithm to perform the upload operation of an HTTP POST request.
For more information about the problem in earlier versions of Internet Explorer, click the following article number to view the article in the Microsoft Knowledge Base:
329781 HTTP file upload operation takes a long time to complete
The HTTP file upload feature is documented in RFC 1867, "Form-based File Upload in HTML." To view this document, visit the following Internet Engineering Task Force (IETF) Web site:
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You can use the INPUT type=file element to upload files from a Web page. For more information about this element, visit the following Microsoft Developer Network (MSDN) Web site: