---
title: PWA and Offline Use
description: How to install MIDAS as an app and use it offline. After installation, you can continue your analysis without an internet connection.
---

# PWA and Offline Use {#pwa-and-offline-use}

MIDAS is a Progressive Web App (PWA), an app you can install from your browser. Once installed, you can continue your data analysis even without an internet connection.

## Install as an App {#install-as-an-app}

MIDAS is designed for desktop-sized displays. Installing as an app is supported on desktop and laptop computers running Chrome, Edge, or Safari (macOS). Firefox does not support installing as an app, but you can use MIDAS in the browser. For the APIs required to use MIDAS in a browser without installing, see [Browser Requirements](privacy-security#browser-requirements).

Installing MIDAS as an app lets you launch it from your OS app list or taskbar, in its own window separate from browser tabs. All analysis features work in the browser without installation. Installation adds offline use and [OS integration for MDS files](#opening-mds-files-from-your-os).

On installation, additional files needed for offline use (about 40 MB) are downloaded automatically. A banner at the bottom of the screen shows the status and displays **Ready for offline use** when it finishes. If the download is interrupted, it retries automatically the next time you open MIDAS online.

Offline, you can continue analyzing data already on your machine. Operations that need a network connection, such as loading or reloading a file from an external URL, are unavailable offline.

### Chrome / Edge {#chrome--edge}

1. Open [MIDAS](https://app.midas-app.org/)
2. Click the install icon at the right end of the address bar
3. Select "Install" in the confirmation dialog

### Safari (macOS) {#safari-macos}

Add to Dock is available on macOS Sonoma and later.

1. Open [MIDAS](https://app.midas-app.org/) in Safari
2. Select **File** → **Add to Dock** from the menu bar

### Uninstall the App {#uninstall}

On Chrome and Edge, uninstall from the menu in the app window. On Safari (macOS), move the icon to the Trash from Launchpad or the Applications folder in Finder.

## Automatic Updates {#automatic-updates}

When a new version of MIDAS is released, the update is downloaded in the background on your next online visit. It takes effect the next time you launch the app — your current session is never interrupted. No manual update is needed.

The current version is shown on the launcher screen. There is no setting to disable automatic updates.

## Opening MDS Files from Your OS {#opening-mds-files-from-your-os}

On Chrome and Edge desktop, double-click an [MDS file](mds-file-format) (MIDAS project file) to open it directly in MIDAS. To associate MDS files with MIDAS in your OS file manager, install MIDAS as a PWA.

Safari does not support PWA file associations, so this feature is unavailable there. If you installed MIDAS with Safari, open MDS files from **Open File** on the [launcher screen](getting-started#open-an-exported-file).

## See also {#see-also}

- **[Getting Started](getting-started)** - Basic operations tutorial
- **[MDS Files](mds-file-format)** - Saving, exporting, and signing project files
- **[Privacy and Security](privacy-security)** - Where data is processed, storage, and browser requirements