Grammarly Desktop vs. Web: Which Version Uses Less RAM?

If your computer slows down while writing, Grammarly might be part of the reason. Both the desktop app and the web version check your grammar and style, but they handle system memory very differently. Knowing this difference can help you choose the right version for your device.

What Is Grammarly?

Grammarly is an AI-powered writing assistant developed by Grammarly Inc. It checks spelling, grammar, punctuation, clarity, and tone in real time as you write. It works across emails, documents, social media, and more. Grammarly is available as a desktop app, a browser extension, and a web-based editor. It offers both a free plan with basic corrections and paid plans with advanced suggestions for style, readability, and plagiarism detection.

RAM Usage Breakdown

Before diving deeper, it helps to understand what each version actually is. The desktop app is a standalone program you install on your computer. The web version works through your browser, either as an extension or through the Grammarly editor at app.grammarly.com.

The choice between them is not just about convenience. It directly affects how much of your computer's RAM gets used while Grammarly runs.

How the Grammarly Desktop App Uses RAM

The Grammarly desktop app is built on the Electron framework. Electron is a popular tool that lets developers build cross-platform desktop apps using web technologies. However, it bundles its own version of the Chromium engine and a Node.js runtime into the app itself.

This means the desktop app runs like a mini browser in the background, even when you are not actively using it. It does not share memory with your existing browser.

In practice, the Grammarly desktop app typically consumes between 150 MB and 400 MB of RAM. This range can increase depending on the length of your document and whether integrations like Microsoft Word or Google Chrome are active at the same time.

On computers with 4 GB or 8 GB of RAM, this overhead becomes noticeable. It can slow down other applications, especially when you have multiple programs open.

The advantage, however, is deep system integration. The desktop app works across many programs without requiring a browser. It checks writing inside Word, Outlook, and other native apps.

How the Grammarly Web Version Uses RAM

The Grammarly web version comes in two forms. The first is the browser extension, available for Chrome, Firefox, Edge, and Safari. The second is the Grammarly online editor at app.grammarly.com.

Both of these rely on your existing browser to function. They do not run a separate engine in the background.

The Grammarly browser extension typically adds 50-150 MB to your browser's memory usage. Since your browser is already open and consuming RAM for other tabs and tasks, the extension shares that existing environment.

This makes it significantly lighter in terms of dedicated RAM than the desktop app. The extension does not launch a separate Chromium instance. It runs inside the one you already have.

The online Grammarly editor uses even less dedicated memory for the tool itself, since the writing environment lives entirely within the browser tab. However, total browser RAM usage depends on how many tabs you have open.

Comparison Table

Which Version Should You Choose?

If you work mostly in a browser and only need writing assistance in web-based tools, Google Docs, or the Grammarly editor, the browser extension or web app is the smarter pick. It is lighter, requires no separate installation process, and performs well for most everyday writing tasks.

If you frequently write in Microsoft Word, Outlook, or other desktop applications, the Grammarly desktop app offers tighter, more reliable integration. The higher RAM cost is worth it if native app support is your priority.

For users on Windows or macOS with tight system resources, downloading the appropriate version from a reliable source is important. You can get the latest desktop version of Grammarly through Fileion, which offers a clean and verified download option without unnecessary bundled software.

Frequently Asked Questions

Does Grammarly slow down your computer?

It can, particularly on machines with limited RAM. The desktop app runs a background process using the Electron framework, which adds a dedicated memory load even when you are not actively writing. The browser extension has a lighter impact.

How much RAM does the Grammarly desktop app use?

The desktop app typically uses between 150 MB and 400 MB of RAM. This can rise further when Grammarly is actively integrated with programs like Microsoft Word or when large documents are being analyzed.

Is the Grammarly browser extension lighter than the desktop app?

Yes. The browser extension adds roughly 50 MB to 150 MB on top of your browser's existing memory usage. It does not run a separate application process, making it considerably lighter than the desktop version.

Can I use Grammarly without installing any software?

Yes. You can use the Grammarly online editor at app.grammarly.com without installing anything. This is the most resource-efficient way to access Grammarly, though it requires you to write directly in the browser tab.

Which version of Grammarly is better for older computers?

The browser extension or the web editor at app.grammarly.com is better suited for older computers with limited RAM. The desktop app's Electron-based architecture is resource-intensive and better suited for newer hardware with more memory headroom.