Rename screenshots with a description automatically with Gemini–for free

Screenshots. I take lots of them. I need something I see in my browser for a presentation. I want to remember something I see on social media on my phone. So. Many. Screenshots. And then what?

Google has launched a tool to access Gemini 2.5 Pro from the command line. It’s called Gemini-CLI, and it comes with 1,000 free requests per day. Its main customers are developers, it has some agentic capabilities to access and write code. It lives in your terminal and can easily access files.

Open a terminal and check for npm and node. If you’re not into coding, you might have to install them:

npm -v
node -v

If you don’t have them, first install Homebrew:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Next, this should do the trick:

brew install node

On to Gemini-CLI:

npm install -g @google/gemini-cli

Now, got to the directory you want to work in. I suggest starting with a small number of screenshots to dial in the prompt. I made a folder called “screens” on my desktop and put in seven screenshots. In my terminal, I go to cd Desktop, cd screens, and fire up Gemini:

gemini

You have to log in with your Google account once. Next, try your first prompt:

Look at the screenshots in this directory, and rename them with a brief description. Start the file name with the date and time.

Check

/privacy

in Gemini-CLI to disallow data usage, even users in the free tier should be able to opt-out.

How good is that? And it’s just the first idea. I’m sure, you can come up with a plan to vibecode an app that renames screenshots and start making passive income more use cases to work with folders and files on your computer.