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POHow to detect corrupt very large image files with javascript and jquery-file-upload?
 

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  1. POHow to detect corrupt very large image files with javascript and jquery-file-upload?
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    <p>I am using jquery-file-upload in a rails app and I need to prevent corrupted images from being uploaded because users are trying to upload corrupt image files with valid file extensions.</p> <p>Would like to verify client side using javascrpt to avoid the long delay for verification on server with large files over 50 MB. </p> <p>I can check the file type but how would I reliably verify a very large valid and uncorrupted jpg or tif image using jquery/native javascript/jquery-file-upload?</p> <pre><code>$('form[id*=photo]').fileupload({ dataType: 'script', pasteZone: null, sequentialUploads: true, formData: {fileupload: 'ajax'}, add: function(e, data) { if($('#photo_id').val() == ""){ data.type = 'POST'; }else{ data.type = 'PUT'; data.url = "/photos/" + $('#photo_id').val(); } if(this.id != "new_photo"){ data.type = 'PUT'; } types = /(\.|\/)(jpe?g|tif|tiff)$/i; file = data.files[0]; if( types.test(file.type) || types.test(file.name) ) { data.context = $(tmpl("template-upload", file)); $('.upload').remove(); $('#progbar').append(data.context); $('#control-group-progress').show(); data.submit(); } else { alert("We're sorry but the file " + file.name + " is not in a supported tiff or jpg image file format. Please select a jpeg (jpg) or tiff file. Thanks!"); } }, progress: function(e, data) { if(data.context) { progress = parseInt(data.loaded / data.total * 100, 10); progress = parseInt(progress * 0.9, 10); data.context.find('.bar').css('width', progress + '%'); data.context.find('.progress_percent').html(progress + "%"); } }, always: function(e, data) { data.context.find('.bar').css('width', '100%'); data.context.find('.progress_percent').html("100%"); } }); </code></pre>
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    1. COhttp://stackoverflow.com/questions/198438/efficiently-detect-corrupted-jpeg-file
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      1. POHow to detect corrupt very large image files with javascript and jquery-file-upload?
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    2. COThanks Robert! Great server side and desktop solutions with interesting approaches. Not sure if any are feasible for browser based client side javascript.
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      1. POHow to detect corrupt very large image files with javascript and jquery-file-upload?
      1. USphil
 

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