How do I fix "Can't upload" error?

Start

You are here because you saw that frustrating "Can't upload" message on your screen.

Diagnose

Let’s find the cause of  the message. We will give you a list of things to check in order to avoid common mistakes our users make:

  • Free plan requires account verification before uploading non-image files. Images include following extensions: BMP, GIF, JPEG, PNG, PCX, TIFF, TGA, WEBP, MPO. If you are uploading any other file type you will need to attach payment information to your account. We will not charge you. We use it for verification purposes only. 
  • Free plan has hard limits on uploads and storage - you can see your remaining upload units and other limits in your  dashboard. Once you hit the limit, your uploads are paused for the remainder of usage month. 
  • Each of our plans have limits on sizes of the files. Please check that your file is not exceeding the limits.
  • Check if you are able to upload the file using the widget on our main site https://uploadcare.com/widget/configure/. Were you able to do that? If not, what does it say?
  • Check "Signed uploads" option - if you are not sure what it is, just disable it (see the pic below)

  • Sometimes it is convenient to upload a file through the URL. Check that URL is correct and the file is publicly available - you should be able to open the URL using "Incognito mode" of your browser.

Getting additional information

Open "Developer tools" (Ctrl + Shift + C for Chrome) in your browser and you will find a tab with a network activity. Repeat your file upload and find the line:

/upload/base/?jsonerrors=1 click on it and you'll further see the reason of the disaster:

Developer console

Report

If you are receiving error messages not covered in this guide you can always check with our support. Your report should be as detailed as possible - your action sequence, information about the file, console messages, any other information that might help us to know more about your setup.