web-fss

web-fss is a practical replacement for python -m http.server.

Features

• Directory listing Web UI
• Resume download via HTTP range (206 Partial Content)
• Web upload button with chunked upload
• Same-name conflict check before upload
• Conflict options: overwrite / rename / cancel
• Overwrite or resume upload flow
• .upload metadata for upload progress
• Auto-remove .upload after upload completion
• File and folder delete button in UI
• Open mode switch in UI: Preview (browser MIME rendering) / Download
• --serve-index-html to auto-serve index.html/index.htm on directory request
• Reverse proxy sub-path support via --base-path

Python compatibility: 3.7 to 3.13 (and newer 3.x).

Install

pip install web-fss

For local development:

pip install -e .

Run

Default (current directory, port 8000):

web-fss

or

python -m web_fss

Tip (recommended quick run):

uvx web-fss

Custom port and directory:

web-fss 9000 -d /data/files

Bind local only:

web-fss -b 127.0.0.1

Disable upload:

web-fss --no-upload

Show hidden files (dotfiles):

web-fss --show-hidden

Set upload chunk size (default 4MB):

web-fss --chunk-size 1048576

Auto-serve index.html/index.htm for directory requests:

web-fss --serve-index-html

Serve behind a reverse proxy path prefix:

web-fss -b 127.0.0.1 --base-path /files

Use --base-path when the proxy forwards requests with the prefix still present, such as /files/.api/list and /files/example.zip. If the proxy strips /files before forwarding to web-fss, no extra option is required; the Web UI builds API URLs from the current browser path.

Resumable Upload

When uploading a.zip, server creates:

• a.zip (target file)
• a.zip.upload (JSON metadata)

Metadata fields:

• file_size
• uploaded_ranges ([start, end))
• bytes_received
• completed

When uploading same filename again:

1. Check existing file and .upload
2. Resume if state is valid
3. Otherwise overwrite
4. Remove .upload after completion

API Endpoints

• GET /.api/list?directory=/path/
• POST /.upload/check
• POST /.upload/init
• POST /.upload/chunk
• POST /.upload/delete
• DELETE /.upload/delete

When --base-path /files is used, these endpoints are available under /files, for example GET /files/.api/list?directory=/path/.

License

MIT