Flash Note

Self-hosted ephemeral text & image sharing. Paste to upload, one-click copy, auto-expire. Single binary, zero external dependencies.

Features

Paste-first — Ctrl+V anywhere to upload text or images
Real-time sync — WebSocket pushes changes to all connected clients instantly
Auto-expire — Every clip has a TTL; expired content is cleaned up automatically
Single binary — Frontend is embedded via go:embed, just run and go
Dark mode — Follows system preference, no toggle needed
Image actions — Copy to clipboard, download, share (Web Share API)

Download the latest binary from Releases, then:

cp examples/config.yaml config.yaml
./flashnote

Open http://localhost:8080 in your browser.

mkdir -p data && chown -R 65532:65532 data
docker run -d \
  -p 8080:8080 \
  -v ./data:/data \
  -v ./config.yaml:/config.yaml \
  mmx233/flashnote

git clone https://github.com/Mmx233/flashnote.git
cd flashnote
cd web && yarn install && yarn build && cd ..
go build -o flashnote .

Create a config.yaml in the working directory (or specify with -c). See examples/config.yaml for a full example.