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For upload functionality, new HTML5 APIs [4] offer a wide variety of new features, including access to the client's file system and dynamic request-generating and processing of images. The new HTML5 features could be a good basis for implementing upload components with a sophisticated user interface and the ability to upload any amount of data.
In addition, this specification defines objects to be used within threaded web applications for the synchronous reading of files. The File API describes how interactions with files are handled, for reading information about them and their data as well, to be able to upload it. Despite the name, the File API is not part of HTML5.
Before uploading images at Wikipedia:File upload wizard, make sure you read and follow the image use policy. Most images you might find on the Internet are copyrighted and not appropriate for uploading to Wikipedia. If you did not create the image, or if you are unable or unwilling to verify its copyright status, do not upload the image. Images ...
image is the name of the image, abc.jpg, xpz.png, 123.gif, etc. Do not include the File: or Image: prefix, do not enclose the name in [[brackets]], but do remember to include the filename extension. image_upright should normally be left blank, so that the size defaults to the size set in a user's preferences.
Finally, you can link to one image from a thumbnail's small double-rectangle icon , but display another image using "|thumb=Displayed image name". This is intended for the rare cases when the Wikipedia software that reduces images to thumbnails does a poor job, and you want to provide your own thumbnail.
Images, audio and video files must be uploaded into Wikipedia using the "Upload file" link on the left-hand navigation bar. Only logged in users can upload files. Once a file is uploaded, other pages can include or link to the file. Uploaded files are given the "File:" prefix by the system, and each one has an image description page.
In this example, the image data is encoded with utf8 and hence the image data can broken into multiple lines for easy reading. Single quote has to be used in the SVG data as double quote is used for encapsulating the image source. A favicon can also be made with utf8 encoding and SVG data which has to appear in the 'head' section of the HTML:
An example of this technique is demonstrated in the Multiple File Upload plugin for jQuery. In this manner, the multiple-file upload problem is solved by providing as many file-select controls as the user has files to upload. Still, this does not solve the problem of selecting multiple files for upload in Internet Explorer.