Questions people actually ask

There are several. Any single file is capped at 512 MB. Text and document files are additionally capped at 2 million tokens, and that is the one that usually stops you, because a long document hits it well before the size limit. Spreadsheets are exempt from the token cap but limited to about 50 MB. Images are capped at 20 MB.

Free accounts get 3 file uploads per day. Beyond that the general cap is 80 files every 3 hours, which rolls rather than resetting at midnight. OpenAI also says these may be lowered at peak times.

Two documented reasons. Failed upload attempts count toward the rolling cap, so a file you retried six times spent six slots. And there is a 25 GB storage cap per user, shared across chats, Projects and custom GPT knowledge, which old files keep occupying until you delete the chats holding them.

No, and nothing running in your browser could. The limits are enforced on OpenAI's side. What it changes is how much gets sent at once: it splits your document into pieces ChatGPT will accept and sends them in order, so the whole thing gets read instead of the first part.

No. There are no servers. The extension reads the file inside your browser, splits the text, and types it into ChatGPT the same way you would if you pasted it. The only place your content goes is OpenAI, exactly as it would without the extension.

No. Chrome on Android and iOS does not support extensions at all, so no extension works there, not just this one. You need Chrome, Edge, Brave or another Chromium browser on a laptop or desktop.

PDF, DOCX, TXT, MD and HTML, meaning anything that has text underneath. It cannot help with video, audio, or scanned PDFs, because there is no text in those to extract. For a scan, run OCR first and then it works normally.

Because every ChatGPT plan except Enterprise extracts digital text from a file and discards the images. A scan is a photograph of a page, so there is no digital text to extract and nothing comes back. Run it through OCR first.

Yes. No account, no payment, no paid tier, no trial. It is a small tool that does one thing, and there is nothing to buy.

We are not aware of it happening. The extension behaves like a person using the interface: it puts text in the box and presses send, at a normal pace. It does not use the API, hold credentials, or bypass anything. That said, automating any interface is a grey area, so read OpenAI's terms and make your own decision.