A friendly, privacy-first Instagram follower and following checker that runs entirely on your own computer. Your password stays yours. Nothing is uploaded. Nothing is stored on a server.
⬇️ Get Whoisit on GitHubFree · Open source · Works on Windows
If you have ever wondered who quietly stopped following you back, or which accounts you follow that never follow you in return, Whoisit answers that question in a few clicks. Instead of guessing, you get a clear list.
The difference between Whoisit and most other follower checkers is simple: your data never leaves your device. The tool runs locally in your browser as a Chrome extension. There is no account registration, no password field, and no cookie file upload. You stay in full control of your Instagram session from start to finish.
You do not need to be a programmer to use Whoisit. If you can install a browser extension, you can use this tool. Follow the steps below in order and take your time.
Step 1 — Download the tool. Visit this link to download the application:
Step 2 — Save the files to your computer. When the page opens, choose the option to download the project. Pick a folder you will remember, such as your Downloads folder or a new folder on your Desktop.
Step 3 — Unzip the downloaded folder. If the file arrives as a compressed folder, right-click it and choose Extract All, then confirm. You should end up with a normal folder you can open, containing the extension files.
Step 4 — Open your browser's extension page. In Google Chrome or any Chromium-based browser such as Edge or Brave, type chrome://extensions into the address bar and press Enter.
Step 5 — Turn on Developer Mode. Look at the top-right corner of the extensions page and switch on the toggle labelled Developer mode.
Step 6 — Load the extension. Click the Load unpacked button that appears, then select the folder you unzipped in Step 3. Whoisit will now appear in your extension list.
Step 7 — Pin it for easy access. Click the puzzle-piece icon in your browser toolbar, find Whoisit, and click the pin so it always stays visible.
Open Instagram in the same browser and log in as you normally would. Then click the Whoisit icon in your toolbar. The extension reads the follower and following information that your own browser is already displaying and builds your comparison lists right on your screen.
Because everything happens locally, results appear quickly. You will see two main views: accounts that do not follow you back, and accounts you do not follow back. Scroll through the lists, copy names you care about, or just take a look and close the panel.
Run a fresh check whenever you like. Many people check once a week or once a month to spot changes. Comparing an older result with a newer one is the easiest way to notice who quietly unfollowed you.
Most follower checkers ask you to type your Instagram username and password into their website, or to paste a copy of your browser cookies. Both approaches hand your account access to a stranger. Whoisit is built to avoid that entirely.
The short version: if a tool cannot access your data, it cannot lose your data. That is the whole idea behind Whoisit.
The extension does not appear after loading. Make sure you selected the folder that contains the extension files, not a folder above it. If you picked the wrong folder, click Load unpacked again and choose the correct one.
The lists look empty. Log in to Instagram in the same browser window and open your profile page first. Then click the Whoisit icon and try again.
Results seem out of date. Instagram loads follower data in pages. Scroll slowly through your follower list on Instagram, then run a fresh check in Whoisit.
You are not sure which browser to use. Whoisit is designed for Chrome and other Chromium-based browsers such as Microsoft Edge and Brave, which are all available free for Windows.
Is Whoisit free? Yes. It is an open-source project and free to use.
Will my account be flagged? Whoisit works with information your browser already shows you while you are logged in. It does not log in on your behalf or automate actions on your account.
Do I need to install anything else? No. A modern Chromium-based browser is all you need.
Can I see old results? You can run checks as often as you like and compare lists side by side to spot changes.
Who made this? Whoisit is an independent open-source project maintained on GitHub by Marksab001. You can browse the code, report an issue, or suggest an improvement directly on the repository page.
Visit this link to download the application and take back control of your follower list today.
⬇️ Download Whoisit NowPrivacy-first · No password · No cookie upload · Open source