SealShare

A simple, self-hosted file sharing solution built with Laravel. Upload files, get a shareable link, done. All files are encrypted at rest with AES-256-GCM.

Website: sealshare.nonameweb.ch

Screenshots

Features

• File Uploading — Drag & drop or browse to upload single/multiple files and folders with real-time progress; large files go up in chunks, each retried on its own if the connection drops
• Shareable Links — Each upload generates a unique link for recipients, also as a QR code (saved as a PNG) or through the device's share sheet
• Encryption at Rest — Files are encrypted in the uploader's browser, chunk by chunk with AES-256-GCM, before they are sent, and are stored only in encrypted form; with a share password the share's key is wrapped with a key derived from it (Argon2id) and never stored as it is. It is not end-to-end encryption: the server issues the key, checks each chunk, and decrypts the files for downloads
• Password Protection — Optionally protect shares with a password, typed or generated (random characters or a passphrase, as the admin configures) and copied on the upload page or next to the new link
• Expiration — Shares auto-expire after a configurable duration (1 hour to 30 days)
• Download Limits — Set a maximum number of downloads per share
• ZIP Downloads — Download all files in a share as a single ZIP archive, streamed as it is built, whatever the files' size
• Auto-Cleanup — Expired shares and files are automatically deleted (hourly)
• Admin Dashboard — View, manage, and delete all shares
• Admin Settings — Configure upload limits, storage quotas, branding, and more
• Site Branding — Custom logo, title, and description
• Colour Profiles — Eight Material 3 colour profiles (Indigo, Blue, Teal, Green, Amber, Rose, Violet, Graphite); the admin picks one for every page, mail and error page
• System Password — Optional global password gate to restrict upload access
• User Authentication — Login, password reset, email verification
• Two-Factor Authentication — TOTP-based 2FA via Laravel Fortify
• Light and Dark Themes — Material 3 Expressive design that follows the system theme, or light or dark by choice
• Setup Wizard — First-run wizard to create the initial admin account

Tech Stack

Layer	Technology
Framework	Laravel 13
Application Server	FrankenPHP (via Laravel Octane)
Frontend	Livewire 4, Tailwind CSS 4, Livewire Material (Material 3 Expressive)
Authentication	Laravel Fortify
Encryption	Chunked AES-256-GCM (WebCrypto in the browser), keys wrapped with Argon2id
ZIP Downloads	ZipStream-PHP
Testing	Pest 5 with browser tests (Playwright)
Code Style	Laravel Pint
Build Tool	Vite

Installation — Development

Docker (recommended)

# Build and start the dev container
docker compose -f docker-compose.dev.yml up -d --build

# View logs (including Vite output)
docker compose -f docker-compose.dev.yml logs -f

The app is available at http://localhost:8000 with Vite HMR on port 5173.

Installation — Production

Docker (recommended)

mkdir sealshare && cd sealshare
curl -O https://gitea.nonameweb.ch/noNameWEB/SealShare/raw/branch/main/docker-compose.example.yml
cp docker-compose.example.yml docker-compose.yml

# Generate an app key and paste it into docker-compose.yml
docker run --rm gitea.nonameweb.ch/nonameweb/sealshare:latest php artisan key:generate --show

# Edit docker-compose.yml — set APP_KEY and APP_URL, and choose how HTTPS is served (below)
# Then start:
docker compose up -d

Migrations run automatically on startup. Open your configured domain — the Setup Wizard will create the first admin account.

Key environment variables:

Variable	Required	Description
APP_KEY	Yes	Laravel encryption key
APP_URL	Yes	Full URL (e.g. https://share.example.com)
AUTO_HTTPS	No	true to fetch a Let's Encrypt certificate for SERVER_NAME and serve HTTPS on port 443 (port 80 redirects); default false, plain HTTP on port 80 for a reverse proxy
SERVER_NAME	With AUTO_HTTPS	The domain to fetch the certificate for (e.g. share.example.com)
UPLOAD_CHUNK_SIZE_MB	No	Size of each encrypted chunk the browser sends; default 16

HTTPS is required for uploads. Files are encrypted in the uploader's browser with WebCrypto, which browsers only offer over HTTPS or on localhost; over plain HTTP the upload page says so and takes no files (downloads keep working). Either set AUTO_HTTPS: "true" with SERVER_NAME — ports 80 and 443 must be reachable from the internet — or put a reverse proxy that terminates TLS in front of port 80.

Volumes:

Volume	Path	Purpose
sealshare_storage	/app/storage/app	Encrypted uploaded files
sealshare_database	/app/database	SQLite database
caddy_data	/data	TLS certificates
caddy_config	/config	Caddy configuration

Large files:

Files go up in chunks of UPLOAD_CHUNK_SIZE_MB, one request each, so PHP's upload limits and a proxy's request timeout do not limit a file's size. What does:

Limit	Where	Default
Max file size / Max size per share	Admin → Settings	100 MB / 2 GB
Storage quota	Admin → Settings	20 GB — files still uploading count towards it
UPLOAD_CHUNK_SIZE_MB	Environment	16

Behind a reverse proxy, its request body limit must be a little larger than a chunk (nginx: client_max_body_size 32m;), and proxy_request_buffering off; keeps nginx from writing each chunk to its own temporary files. PHP_UPLOAD_MAX_FILESIZE / PHP_POST_MAX_SIZE (default 64M) only apply to the admin's logo upload. An upload no chunk reached for 4 hours is deleted by the hourly cleanup.

Manual (without Docker)

git clone https://gitea.nonameweb.ch/noNameWEB/SealShare.git
cd SealShare

composer install --no-dev --optimize-autoloader
npm install && npm run build

cp .env.example .env
php artisan key:generate

# Edit .env — set APP_ENV=production, APP_DEBUG=false, APP_URL=https://your-domain.com

touch database/database.sqlite
php artisan migrate --force
php artisan storage:link

php artisan config:cache
php artisan route:cache
php artisan view:cache

Start with Octane:

php artisan octane:frankenphp --host=0.0.0.0 --port=80

Or point your web server (Nginx/Apache) to the public/ directory for a traditional PHP-FPM setup.

Add the scheduler to your crontab:

* * * * * cd /path-to-sealshare && php artisan schedule:run >> /dev/null 2>&1

License

This project is open-source software licensed under the MIT License.

Generated passphrases draw from the EFF Large Wordlist by the Electronic Frontier Foundation, licensed under CC BY 3.0 US (resources/wordlists/eff-large-wordlist.txt, without its four hyphenated words).