Stop stuffing context. Build it.
Pasting ten files into a chat one after another loses track of which text came from where, and mixes your instructions with your material. Our context builder puts everything in one block with clear delimiters: your system prompt first, then each file inside its own tag, named after the file.
You select source files (Markdown, text, code, HTML, CSS or JSON), optionally write a system prompt, and the tool produces a single block, ready to paste into ChatGPT, Claude, Gemini or any other model, which can then tell your instructions from your files and cite a file by name.
What it does
- Wraps each file in a <file name="..."> tag
- Puts your optional system prompt first, inside a <system_prompt> tag
- Groups all the files inside one <context> block
- Accepts .md, .txt, .markdown, .js, .py, .tsx, .jsx, .html, .css and .json files
- Includes every file whole, trimmed of blank lines at its start and end
- Reproducible: the same files and prompt produce the same block
The output can be copied in one click or downloaded as a .txt file. It runs in your browser, so the files are not uploaded.