ChatExt - ChatGPT File Uploader

ChatGPT is good at reasoning over text, but getting a file into the conversation has traditionally meant opening it, copying the contents, and pasting them in — tedious for anything long, and hopeless for a source file. ChatExt adds the missing upload control directly to the chat page, so you can attach documents the way you would in an email client.

The extension supports up to ten files in a single selection and a wide range of formats, from source code like .java and .json to plain text, .docx, and .csv. When a file is too long to fit comfortably, ChatExt automatically chunks it into manageable pieces so the conversation continues without errors. On the way out, dedicated download buttons let you grab a generated code snippet or a CSV table straight from the reply instead of copying it out line by line.

PDF and Excel files are not supported at the moment, which is worth knowing before you install it for a spreadsheet-heavy workflow. Otherwise it is a lightweight, free helper aimed at people who use ChatGPT with real files every day — developers, analysts, and writers. It focuses on the mechanics of moving data in and out, and leaves the conversation itself to ChatGPT.