This small extension injects the Folder upload button next to file upload to allow for multiple file uploads at once, while respecting Claude's supported file formats.
If your folder has up to 5 files, each file would be uploaded as is with no modifications.
Since Claude has a 5 file upload limit, if your folder contains more files, the folder will be combined into a single file, preserving the directory structure and file names.
For example if your folder looks like this:
.
└── ClaudeFoldersTest
├── file1.txt
├── file2.txt
├── subfolder
│ └── file3.txt
├── subfolder2
│ ├── file4.txt
│ └── file5.txt
└── subfolder3
└── file6.txt
5 directories, 6 files
The extension will then upload a file named ClaudeFoldersTest-combined.txt with contents like this:
[File]: file1.txt
contents of file 1
[File]: file2.txt
contents of file 2
[File]: subfolder/file3.txt
contents of file 3 in subfolder
[File]: subfolder2/file4.txt
contents of file 4
[File]: subfolder2/file5.txt
contents of file 5
[File]: subfolder3/file6.txt
contents of file 6
This is very useful for programming needs as it allows you to combine all your code files into a single file to feed Claude.
To include some safety considerations all files that are starting with .filename are ignored (.env files for example) and not sent to Claude.
Additionally, in the combined mode where there is more than 5 files, images are uploaded only as <image_content> excluding the file's actual content to keep the context length reasonable.
To install the extension to Chrome:
- Checkout or download the git repository from the releases here.
- Navigate to
chrome://extensions/URL. - Click
Load unpackedand point to the downloaded location.
If there is enough traction I will be happy to release this plugin to Chrome marketplace.