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About the developer

13.2K Stars 1.3K Forks Mozilla Public License 2.0 3.5K Commits 153 Opened issues


Simple, private file sharing from the makers of Firefox

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Firefox Send Firefox Send


Docs: FAQ, Encryption, Build, Docker, Metrics, More

Table of Contents

What it does

A file sharing experiment which allows you to send encrypted files to other users.



To start an ephemeral development server, run:

npm install
npm start

Then, browse to http://localhost:8080


| Command | Description | |------------------|-------------| |

npm run format
| Formats the frontend and server code using prettier. |
npm run lint
| Lints the CSS and JavaScript code. |
npm test
| Runs the suite of mocha tests. |
npm start
| Runs the server in development configuration. |
npm run build
| Builds the production assets. |
npm run prod
| Runs the server in production configuration.


The server is configured with environment variables. See server/config.js for all options and docs/ for examples.


Firefox Send localization is managed via Pontoon, not direct pull requests to the repository. If you want to fix a typo, add a new language, or simply know more about localization, please get in touch with the existing localization team for your language or Mozilla’s l10n-drivers for guidance.

see also docs/


Pull requests are always welcome! Feel free to check out the list of "good first issues".


| ENVIRONMENT | URL |-------------|----- | Production | | Stage | | Development |


see also docs/


The android implementation is contained in the

directory, and can be viewed locally for easy testing and editing by running
ANDROID=1 npm start
and then visiting http://localhost:8080. CSS and image files are located in the


Mozilla Public License Version 2.0

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