'Form should only accept PDF-file
I use the Wordpress plugin Contact Form 7 and allow users to upload a PDF-file. The input field looks like this.
<input type="file" name="file-838" size="40" class="wpcf7-form-control wpcf7-file hidden" id="myFile" accept=".pdf" aria-invalid="false" />
On my computer and iPhone I can only upload a PDF-file, but on Samsung phones (and maybe other phones) people can upload an image which should not be possible.
What causes this problem and how can I fix it?
Sources
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Source: Stack Overflow
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