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Editorial Team
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Asked: 2026-06-17T06:26:12+00:00

I implemented a limit on the size that users can upload images to the

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I implemented a limit on the size that users can upload images to the GAE blobstore using the UploadOptions method. When the file size uploaded is too large, I get redirected to this page:

Error 413 Your client issued a request that was too large. Maximum
upload size per blob limit exceeded.

How can I prevent the redirect? I want to provide a meaningful message to tell users that the file size is too large on the current page.

My code for uploading:

<form action="<%= blobstoreService.createUploadUrl("/upload", UploadOptions.Builder.withMaxUploadSizeBytes((512000))%>" method="post" enctype="multipart/form-data">
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1 Answer

  1. Editorial Team

    Submit the form with an ajax request. The response code is there and you can act on it accordingly.

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