An open-source CAPTCHA Box alternative designed with privacy and data protection in mind.
npm install librecap
An open-source CAPTCHA Box alternative designed with privacy and data protection in mind.
Add the script tag to your HTML file:
``html`
src="https://cdn.jsdelivr.net/npm/librecap@0.3.5/dist/librecap-min.js"
integrity="sha512-8ECHqV3vio1fYIU1gknMEEGpY/uvkb2qiy/f3j4nP55HZ0LfIWqRFIM52B0IpGMy84ui36jQm/vXiK64IldNfQ=="
crossorigin="anonymous"
>
Add a CAPTCHA box to your website by inserting this div wherever you need verification:
`html`
That's it! The default configuration works out of the box using your own server implementation that can be found here.
!LibreCap Widget Light Theme
!LibreCap Widget Dark Theme
!LibreCap Image Popup Light Theme
!LibreCap Image Popup Dark Theme
!LibreCap Audio Popup Light Theme
!LibreCap Audio Popup Dark Theme
- Quick Start
- Screenshots
- Overview
- Features
- Installation
- Advanced Configuration
- Development
- Browser Compatibility
- Contributing
- License
LibreCap offers a privacy-friendly CAPTCHA solution that respects your users' data. Unlike other CAPTCHA services, LibreCap operates without tracking, cookies, or analytics, making it an excellent choice for websites that prioritize user privacy.
- Privacy-First Design: No tracking, no cookies, no analytics, no third-party services
- Adaptive Theming: Dark, light, and automatic theme support to match your website
- Internationalization: Translations for 107 languages with automatic language detection
- Mobile-Friendly: Works seamlessly on all devices, including mobile
- Customizable: Easily style with CSS to match your website's design
- Dual Verification Methods: Supports both Proof of Work (PoW) and traditional CAPTCHA challenges
`bash`
git clone https://github.com/librecap/librecap.git
cd librecap
npm install
npm run demo
Add the script tag to your HTML file:
`html`
src="https://cdn.jsdelivr.net/npm/librecap@0.3.5/dist/librecap-min.js"
integrity="sha512-8ECHqV3vio1fYIU1gknMEEGpY/uvkb2qiy/f3j4nP55HZ0LfIWqRFIM52B0IpGMy84ui36jQm/vXiK64IldNfQ=="
crossorigin="anonymous"
>
Add a CAPTCHA box to your website by inserting this div wherever you need verification:
`html`
`bash`
npm install librecap
Then import it in your project:
`javascript`
import 'librecap'
LibreCap can be customized by adding data attributes to your div:
`html`
Available configuration options:
- data-theme: Set to "light", "dark", or "auto" (default)data-language
- : CURRENTLY ONLY FOR AUDIO CHALLENGE GENERATION; Set a specific language code after ISO 639-1 or "auto" (default)data-sitekey
- : Set your LibreCap site key when using a third party gateway server (optional, only when using a third party gateway server)data-endpoint
- : Set the URL of your LibreCap endpoint, this could be an gateway server or your own server address (default: https://librecap.tn3w.dev/librecap/v1 when an site key is provided, otherwise /librecap/v1)data-brand-title
- : Set the title of the brand (default: "LibreCap")data-brand-url
- : Set the URL of the brand (default: "https://github.com/librecap/librecap")data-brand-logo
- : Set the logo URL of the brand (default: base64 encoded url representation of LibreCap logo)data-brand-description
- : Set the description of the brand (default: "LibreCap is an open-source CAPTCHA alternative designed with privacy and data protection in mind.")data-brand-github
- : Set the GitHub URL of the brand (default: "https://github.com/librecap/librecap")data-brand-terms
- : Set the terms URL of the brand (default: "https://github.com/librecap/librecap/blob/main/TERMS.md")data-brand-privacy
- : Set the privacy URL of the brand (default: "https://github.com/librecap/librecap/blob/main/PRIVACY.md")
Clone the repository:
`bash`
git clone https://github.com/librecap/librecap.git
cd librecap
Install the dependencies:
`bash`
npm install
Build the project:
`bash`
npm run build
Start the demo server:
Install express and cors before running the demo server.
`bash`
npm install express cors
`bash`
npm run demo
Contributions are welcome! Please feel free to submit a Pull Request.
1. Fork the project
2. Create your feature branch (git checkout -b feature/amazing-feature)git commit -m 'Add some amazing feature'
3. Commit your changes ()git push origin feature/amazing-feature`)
4. Push to the branch (
5. Open a Pull Request
Copyright 2025 LibreCap Contributors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.