Three Ways to Upload PDF to ChatGPT to Analyze or Summarize

Renee LIN
4 min readMar 23, 2023

We might need to read a lot of articles or papers; it will be nice to get inspiration from ChatGPT in seconds. But from the interface, I can’t find anywhere I can upload PDFs. So I search for ways of uploading PDF content. Here are three ways I got.

  1. PDF to text, then copy and paste (has word limit issue)
  2. Paste the link of the file directly
  3. Third-party solutions
  4. The free tool recommended by Zuzanna Glogowska in the comment: SciSpace’s copilot on

1. PDF to text, then copy and paste

This is the most common way I can find from Google. There are articles about how to get the text from PDF and then paste it to ChatGPT. This online tool is handy:

The problem is the word limit as below:

I asked ChatGPT about its word limits, but it didn’t tell me. So I googled it, and it seems to have a limit of 3000 words, while ChatGPT-4 is up to 25,000 words at a time. I tested it with a paper of 4770 words and found out 2400 words was its limit.(paper…



Renee LIN

Passionate about web dev and data analysis. Huge FFXIV fan. Interested in healthcare data now.