Pasted File Editor

Simon Willison released a new web tool called Pasted File Editor that automatically converts large text pastes into file attachments, mimicking a feature from Claude AI. The tool, built using Codex desktop, also supports direct file opening with image thumbnails and drag-and-drop functionality.

Tool: Pasted File Editor https://tools.simonwillison.net/pasted-file-editor I really like how you can paste a large volume of text into claude.ai https://claude.ail or the Claude desktop/mobile apps and it will detect it as a large paste and turn it into a file attachment instead. I decided to have Codex desktop build me a version of that https://gist.github.com/simonw/74c79119b487a5acce18b4dcc26b9f79 as a prototype. You can also open files directly - including images which will be shown as thumbnails - or drag files onto the textarea. Tags: javascript https://simonwillison.net/tags/javascript , tools https://simonwillison.net/tags/tools , ai-assisted-programming https://simonwillison.net/tags/ai-assisted-programming , claude https://simonwillison.net/tags/claude , codex https://simonwillison.net/tags/codex