PairDrop/README.md

# PairDrop 

[PairDrop](https://pairdrop.net): local file sharing in your browser. Inspired by Apple's AirDrop. 

Developed based on [Snapdrop](https://github.com/RobinLinus/snapdrop)

## Differences to Snapdrop

### Device Pairing
* Pair devices via 6-digit code or QR-Code
* Pair devices outside your local network or in complex network environment (public wifi, company network, Apple Private Relay, VPN etc.).
* Paired devices will always find each other via shared secrets even after reopening the browser or the Progressive Web App
* You will always discover devices on your local network. Paired devices are shown additionally.
* Paired devices outside your local network that are behind a NAT are connected automatically via [Open Relay: Free WebRTC TURN Server](https://www.metered.ca/tools/openrelay/)

### [Improved UI for sending/receiving files](https://github.com/RobinLinus/snapdrop/issues/560)
* The receiving peer must accept the request of files **before** they are transferred and downloaded automatically afterwords if possible
* Multiple files are downloaded as ZIP file
* On iOS and Android the devices share menu is opened instead of downloading the files
* Multiple files are transferred at one archive which shows the overall progress correctly
* The integrity of the files is checked on receive
* By zipping the files before sending, all metadata is preserved

### Share Files Directly From Share / Context Menu
* [Share files directly form context menu on Windows](/docs/how-to.md#share-files-directly-form-context-menu-on-windows)
* [Share directly from share menu on iOS](/docs/how-to.md#share-directly-from-share-menu-on-ios)
* [Share directly from share menu on Android](/docs/how-to.md#share-directly-from-share-menu-on-android)


### Other changes
* [Paste Mode](https://github.com/RobinLinus/snapdrop/pull/534)
* [Video and Audio preview](https://github.com/RobinLinus/snapdrop/pull/455) (thanks [@victorwads](https://github.com/victorwads))
* [Prevent device from sleeping on file transfer](https://github.com/RobinLinus/snapdrop/pull/413)
* node-only implementation (thanks [@Bellisario](https://github.com/Bellisario))
* automatic restart on error (thanks [@KaKi87](https://github.com/KaKi87))
* lots of stability fixes (thanks [@MWY001](https://github.com/MWY001) [@skiby7](https://github.com/skiby7) [@willstott101](https://github.com/willstott101))
* To host PairDrop on your local network (e.g. on Raspberry Pi): [All peers connected with private IPs are discoverable by each other](https://github.com/RobinLinus/snapdrop/pull/558)

## Screenshots
![Pairdrop Preview](/docs/pairdrop_screenshot_mobile.gif)

## PairDrop is built with the following awesome technologies:
* Vanilla HTML5 / ES6 / CSS3 frontend
* [WebRTC](http://webrtc.org/) / [WebSockets](http://www.websocket.org/)
* [NodeJS](https://nodejs.org/en/) backend
* [Progressive Web App](https://wikipedia.org/wiki/Progressive_Web_App)
* [IndexedDB API](https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API)
* [zip.js](https://gildas-lormeau.github.io/zip.js/)

Have any questions? Read our [FAQ](/docs/faq.md).

You can [host your own instance with Docker](/docs/host-your-own.md).


## Support the Community
PairDrop is free and always will be. Still, we have to pay for the domain.

To contribute and support me:<br>
<a href="https://www.buymeacoffee.com/pairdrop" target="_blank">
<img src="https://cdn.buymeacoffee.com/buttons/v2/default-yellow.png" alt="Buy Me A Coffee" style="height: 60px !important;width: 217px !important;" >
</a>

Thanks a lot for supporting free and open software!

To support the original Snapdrop and its creator go to [his GitHub page](https://github.com/RobinLinus/snapdrop).

## How to contribute

Feel free to [open an issue](https://github.com/schlagmichdoch/pairdrop/issues/new/choose) or a
[pull request](https://github.com/schlagmichdoch/pairdrop/pulls) but follow
[Contributing Guidelines](/CONTRIBUTING.md).