# Troubleshooting errors when uploading PDFs

Updated over 2 weeks ago

If you're getting errors on PDF uploads, you may be experiencing one of Elicit's known limitations:

- The paper contains many graphs/charts/images. Elicit sometimes has trouble extracting data from PDFs that contain a large number of non-text elements.

- The PDF was made by scanning or imaging a printed document. If the PDF contains _images of text_ rather than text, Elicit will not successfully read your file.

- The paper contains unusual or odd formatting that makes it difficult for Elicit to parse.

- Your file is too large. On Basic, the file limit is 20MB. On Plus or higher plans, the limit is 200MB.

- Your filename may be too long.

- There is much more text in the paper itself than in a typical academic paper, regardless of file size.

If your issue is not one of the above, please email us at [**help@elicit.com**](mailto:help@elicit.com) and **attach the PDF you're having trouble with** as well as a screenshot of the error you're receiving.