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vikaspa

JQUERY Validate image name extension

in Using jQuery • 9 years ago

Dear All

I really love this forum.....

in an CMS I am uploading the images

I Want to allow only .JPG files to be uploaded......

Example

In case a person selects abcd.GIF to upload .... an alert message to be displayed as

please upload only JPG

Replies(3)

jakecigar

Re: JQUERY Validate image name extension

9 years ago

It is not possible to be 100% sure that the file is actually a jpeg using jQuery/ JavaScript alone. Users can fake file extensions or hack your form to do all sorts of naughty things.

You might as well allow all uploads, and check on the server.

JΛ̊KE

vikaspa

Re: JQUERY Validate image name extension

9 years ago

Dear JΛ̊KE

Thanks a lot for reply.

I believe it is very difficult to check the actual file type.

In a the portal developed by me, there was provision for the members to upload images on their own.

One member uploaded an exe file (by renaming it to .jpg and we were not knowing it ...)

is there a way to know this or we need to find only from the file extension

example if abcd.jpg is uploaded we have to assume it is an jpg file .....

I believe this can be checked using JQUERY

Pls help

jakecigar

Re: JQUERY Validate image name extension

9 years ago

You believe wrong.

The server program has to validate the contents of the file.

Search for "file upload image XYZ" where XYZ is your server language.

JΛ̊KE

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