
# Kutt.it
**Kutt** is a modern URL shortener with support for custom domains. Create and edit links, view statistics, manage users, and more.
[https://kutt.it](https://kutt.it)
[](https://status.kutt.it)
[](https://github.com/thedevs-network/kutt/#contributing)
[](https://github.com/thedevs-network/kutt/blob/develop/LICENSE)
## Table of contents
- [Key features](#key-features)
- [Donations and sponsors](#donations-and-sponsors)
- [Setup](#setup)
- [Docker](#docker)
- [API](#api)
- [Browser extensions](#browser-extensions)
- [Configuration](#configuration)
- [Integrations](#integrations)
- [Contributing](#contributing)
## Key features
- Created with self-host in mind:
- Zero configuration needed
- Easy setup with no build step
- Supporting various databases (SQLite, Postgres, MySQL)
- Ability to disable registration and anonymous links
- Custom domain support
- Set custom URLs, password, description, and expiration time for links
- View, edit, delete and manage your links
- Private statistics for shortened URLs
- Admin page to manage users and links
- RESTful API
## Donations and sponsors
Support the development of Kutt by making a donation or becoming an sponsor.
[Donate or sponsor →](https://btcpay.kutt.it/apps/L9Gc7PrnLykeRHkhsH2jHivBeEh/crowdfund)
## Setup
The only prerequisite is [Node.js](https://nodejs.org/) (version 20 or above). The default database is SQLite. You can optionally install Posrgres or MySQL/MariaDB for the database or Redis for the cache.
When you first start the app, you're prompted to create an admin account.
1. Clone this repository or [download the latest zip](https://github.com/thedevs-network/kutt/releases)
2. Install dependencies: `npm install`
3. Intialize database: `npm run migrate`
5. Start the app for development `npm run dev` or production `npm start`
## Docker
Make sure Docker is installed, then you can start the app from the root directory:
```sh
docker compose up
```
Various docker-compose configurations are available. Use `docker compose -f up` to start the one you want:
- [`docker-compose.yml`](./docker-compose.yml): Default Kutt setup. Uses SQLite for the database.
- [`docker-compose.sqlite-redis.yml`](./docker-compose.sqlite-redis.yml): Starts Kutt with SQLite and Redis.
- Required envrionment variable: `REDIS_ENABLED`
- [`docker-compose.postgres.yml`](./docker-compose.postgres.yml): Starts Kutt with Postgres and Redis.
- Required envrionment variables: `REDIS_ENABLED`, `DB_PASSWORD`, `DB_NAME`, `DB_USER`
- [`docker-compose.mariadb.yml`](./docker-compose.mariadb.yml): Starts Kutt with MariaDB and Redis.
- Required envrionment variables: `REDIS_ENABLED`, `DB_PASSWORD`, `DB_NAME`, `DB_USER`, `DB_PORT`
Official Kutt Docker image is available on [Docker Hub](https://hub.docker.com/r/kutt/kutt).
## API
[View API documentation →](https://docs.kutt.it)
## Browser extensions
Download Kutt's extension for web browsers via below links.
- [Chrome](https://chrome.google.com/webstore/detail/kutt/pklakpjfiegjacoppcodencchehlfnpd)
- [Firefox](https://addons.mozilla.org/en-US/firefox/addon/kutt/)
## Configuration
The app is configured via environment variables. You can pass environment variables directly or create a `.env` file. View [`.example.env`](./.example.env) file for the list of configurations.
All variables are optional except `JWT_SECRET` which is required on production.
| Variable | Description | Default | Example |
| -------- | ----------- | ------- | ------- |
| `JWT_SECRET` | This is used to sign authentication tokens. Use a **long** **random** string. | - | - |
| `PORT` | The port to start the app on | `3000` | `8888` |
| `SITE_NAME` | Name of the website | `Kutt` | `Your Site` |
| `DEFAULT_DOMAIN` | The domain address that this app runs on | `localhost:3000` | `yoursite.com` |
| `LINK_LENGTH` | The length of of shortened address | `6` | `5` |
| `DISALLOW_REGISTRATION` | Disable registration. Note that if `MAIL_ENABLED` is set to false, then the registration would still be disabled since it relies on emails to sign up users. | `true` | `false` |
| `DISALLOW_ANONYMOUS_LINKS` | Disable anonymous link creation | `true` | `false` |
| `DB_CLIENT` | Which database client to use. Supported clients: `pg` or `pg-native` for Postgres, `mysql2` for MySQL or MariaDB, `sqlite3` and `better-sqlite3` for SQLite. NOTE: `pg-native` and `better-sqlite3` are not installed by default, use `npm` to install them before use. | `sqlite3` | `pg` |
| `DB_HOST` | Database connection host. Only if you use Postgres or MySQL. | `localhost` | `your-db-host.com` |
| `DB_PORT` | Database port. Only if you use Postgres or MySQL. | `5432` (Postgres) | `3306` (MySQL) |
| `DB_NAME` | Database name. Only if you use Postgres or MySQL. | `kutt` | `mydb` |
| `DB_USER` | Database user. Only if you use Postgres or MySQL. | `postgres` | `myuser` |
| `DB_PASSWORD` | Database password. Only if you use Postgres or MySQL. | - | `mypassword` |
| `DB_SSL` | Whether use SSL for the database connection. Only if you use Postgres or MySQL. | `false` | `true` |
| `DB_POOL_MIN` | Minimum number of database connection pools. Only if you use Postgres or MySQL. | `0` | `2` |
| `DB_POOL_MAX` | Maximum number of database connection pools. Only if you use Postgres or MySQL. | `10` | `5` |
| `REDIS_ENABLED` | Whether to use Redis for cache | `false` | `true` |
| `REDIS_HOST` | Redis connection host | `127.0.0.1` | `your-redis-host.com` |
| `REDIS_PORT` | Redis port | `6379` | `6379` |
| `REDIS_PASSWORD` | Redis passowrd | - | `mypassword` |
| `REDIS_DB` | Redis database number, between 0 and 15. | `0` | `1` |
| `SERVER_IP_ADDRESS` | The IP address shown to the user on the setting's page. It's only for display purposes and has no other use. | - | `1.2.3.4` |
| `SERVER_CNAME_ADDRESS` | The subdomain shown to the user on the setting's page. It's only for display purposes and has no other use. | - | `custom.yoursite.com` |
| `CUSTOM_DOMAIN_USE_HTTPS` | Use https for links with custom domain. It's on you to generate SSL certificates for those domains manually—at least on this version for now. | `false` | `true` |
| `ENABLE_RATE_LIMIT` | Enable rate limitting for some API routes. If Redis is enabled uses Redis, otherwise, uses memory. | `false` | `true` |
| `MAIL_ENABLED` | Enable emails, which are used for signup, verifying or changing email address, resetting password, and sending reports. If is disabled, all these functionalities will be disabled too. | `false` | `true` |
| `MAIL_HOST` | Email server host | - | `your-mail-server.com` |
| `MAIL_PORT` | Email server port | `587` | `465` (SSL) |
| `MAIL_USER` | Email server user | - | `myuser` |
| `MAIL_PASSWORD` | Email server password for the user | - | `mypassword` |
| `MAIL_FROM` | Email address to send the user from | - | `some.address@yoursite.com` |
| `MAIL_SECURE` | Whether use SSL for the email server connection | `false` | `true` |
| `REPORT_EMAIL` | The email address that will receive submitted reports | - | `some.address@yoursite.com` |
| `CONTACT_EMAIL` | The support email address to show on the app | - | `some.address@yoursite.com` |
## Integrations
### ShareX
You can use Kutt as your default URL shortener in [ShareX](https://getsharex.com/). If you host your custom instance of Kutt, refer to [ShareX wiki](https://github.com/thedevs-network/kutt/wiki/ShareX) on how to setup.
### Alfred workflow
Download Kutt's official workflow for [Alfred](https://www.alfredapp.com/) app from [alfred-kutt](https://github.com/thedevs-network/alfred-kutt) repository.
### Third-party packages
| Language | Link | Description |
| ---------- | --------------------------------------------------------------------------------- | -------------------------------------------------- |
| C# (.NET) | [KuttSharp](https://github.com/0xaryan/KuttSharp) | .NET package for Kutt.it url shortener |
| C# (.NET) | [Kutt.NET](https://github.com/AlphaNecron/Kutt.NET) | ✂️🔗 C# API Wrapper for Kutt
| Python | [kutt-cli](https://github.com/RealAmirali/kutt-cli) | Command-line client for Kutt written in Python |
| Ruby | [kutt.rb](https://github.com/RealAmirali/kutt.rb) | Kutt library written in Ruby |
| Rust | [urlshortener](https://github.com/vityafx/urlshortener-rs) | URL shortener library written in Rust |
| Rust | [kutt-rs](https://github.com/robatipoor/kutt-rs) | Command line tool written in Rust |
| Node.js | [node-kutt](https://github.com/ardalanamini/node-kutt) | Node.js client for Kutt.it url shortener |
| JavaScript | [kutt-vscode](https://github.com/mehrad77/kutt-vscode) | Visual Studio Code extension for Kutt |
| Java | [kutt-desktop](https://github.com/cipher812/kutt-desktop) | A Cross platform Java desktop application for Kutt |
| Go | [kutt-go](https://github.com/raahii/kutt-go) | Go client for Kutt.it url shortener |
| BASH | [GitHub Gist](https://gist.github.com/hashworks/6d6e4eae8984a5018f7692a796d570b4) | Simple BASH function to access the API |
| BASH | [url-shortener](https://git.tim-peters.org/Tim/url-shortener) | Simple BASH script with GUI |
## Contributing
Pull requests are welcome. Open a discussion for feedback, requesting features, or discussing ideas.
Special thanks to [Thomas](https://github.com/trgwii) and [Muthu](https://github.com/MKRhere). Logo design by [Muthu](https://github.com/MKRhere).