How to share all your files with ChatGPT, Claude, or Gemini at once.
Every AI app caps how many files you can add, and none of them will merge your files for you. Drop the whole folder here instead. Everything, even the PDFs, is read right in your browser and comes back as one file to paste in.
- No sign-up, no install
- Files never leave the browser, not even PDFs
- One file back in about a second
Drag your folder here
Files, PDFs, docs, a whole folder. Read in a second.
Where each AI app stops you.
Every assistant limits how much you can hand it in one go. Combining your files into a single file is how you stay under the cap without leaving anything out.
| Where you add files | What it caps | Limit today |
|---|---|---|
| ChatGPT Projects | Files per project | 5 free, 25 on Plus, 40 on Pro |
| ChatGPT chat | Files per message | 10 at a time |
| Custom GPTs | Knowledge files | 20 |
| Claude Projects | Files in project knowledge | Capped by the context window, not a file count |
| Gemini Gems | Knowledge files | 10 |
| NotebookLM | Sources per notebook | 50 free, 100 on Plus |
Figures as of July 2026, and providers change them often. Check the current cap in each provider’s help center: OpenAI, Anthropic, NotebookLM, Gemini.
From a full folder to one file to paste.
- 1
Drop the whole folder
Drag in everything you want the AI to read. Subfolders come along, and you can add a repo or a link too.
- 2
It reads everything here
PDFs, Word, Excel, code, and notes are turned into text right in this tab. Nothing is uploaded.
- 3
Paste the one file in
Copy the single file and paste it into ChatGPT, Claude, or Gemini. One upload, well under any limit.
One upload beats twenty
Adding files one by one runs into the caps above and scatters them across separate uploads. A single file keeps every document together, in order, so the assistant reads the whole set as one thing.
Common questions.
- How do I share more than 5 files with ChatGPT?
- Combine them into one file first. Drop the whole folder into FileConcat and it returns a single file, which you can add to a Project or paste into a chat well under the per-project and per-message caps.
- Can I combine several PDFs or Word documents into one file for Claude or Gemini?
- Yes. FileConcat reads PDF, Word, Excel, and PowerPoint files in your browser and pulls their text into one file, so you paste that single file in instead of adding each document separately.
- Do my files get uploaded to a server?
- No. Everything is read in your browser tab, including PDFs and Office documents. Nothing is sent, nothing is stored, and there is no account to create.
- Does this work for NotebookLM, Gemini Gems, and Custom GPTs too?
- Yes. The output is one plain file, so it works anywhere you add sources or knowledge: NotebookLM, a Gemini Gem, a Custom GPT, or a Claude Project.