Google Sheets add-ons are small apps you install from the Google Workspace Marketplace to add features the spreadsheet does not have on its own, such as importing data, cleaning duplicates or sending emails. They can save real time, but each one asks for access to your data, so it is worth knowing what you are approving.
Instead of recommending specific products, which change often, this guide covers the categories that tend to be useful and the checks that apply to any add-on.
How to find and install Google Sheets add-ons
In a spreadsheet, open the Extensions menu and choose Add-ons, then Get add-ons. This opens the Marketplace inside Sheets, where you can search by name or browse by category. Select an add-on, read its page, and click Install. Sheets will show a permissions screen the first time, and you must accept it before the add-on runs.
Once installed, an add-on appears under the Extensions menu. To remove one, go to Extensions, Add-ons, Manage add-ons, open the add-on’s menu and choose Uninstall. You can also review which third-party apps have access to your Google account from your account’s security settings.
Categories worth exploring
Data import and connection tools
Many small businesses keep numbers in other services, such as accounting tools, forms or advertising dashboards. Connector add-ons pull that data into a sheet on a schedule so reports stay current without copy and paste. Before you install one, check the connector really supports the service you use and whether scheduled refreshes are included or limited.
Remember that Sheets can already do some importing on its own. IMPORTRANGE brings data from another spreadsheet, IMPORTDATA reads a public CSV or TSV link, and IMPORTHTML reads tables and lists from a web page. If the built-ins cover your need, you do not need an add-on.
Cleanup and deduplication helpers
These add-ons offer menus for removing duplicates, finding similar entries, splitting names and fixing capitalization. They are friendlier than formulas if you clean data only now and then. Sheets already includes Data cleanup tools, covered in our guide to cleaning messy data, so try those first and look for an add-on only if they fall short.
Mail merge and document generation
If you send the same message to many people, or build quotes and invoices from rows of data, a mail merge or document add-on can fill a template from each row. This is one of the clearest wins for freelancers, because it replaces repetitive typing. Always send a test to yourself first, and check daily sending limits for your account type.
Automation and workflow helpers
Some add-ons trigger actions when a sheet changes, for instance sending a notification when a status cell changes to Done. Others connect Sheets to third-party automation platforms. If your needs are modest, the notification rules built into Sheets, found under Tools, Notification settings, might be enough. For more control you can write your own scripts, as we explain in our introduction to Google Apps Script.
Charts, diagrams and presentation extras
Sheets has solid built-in charts, but add-ons can offer extra chart types, maps or dashboards. These suit reporting to clients. Test whether the output updates automatically when your data changes, since a static image defeats the purpose.
How to vet an add-on before installing
An add-on is software from a third party that can read and sometimes change your files. A short checklist helps you decide.
- Read the permissions. An add-on that only works inside the current spreadsheet is lower risk than one asking for access to all your Drive files or your email.
- Check the developer. Look for a clear company or developer name, a website, a privacy policy and a support contact.
- Read recent reviews. Look for patterns in complaints, particularly about data handling or billing, and be wary of pages with only vague praise.
- Look at the update history. An abandoned add-on can break or become a security risk.
- Understand the pricing. Many add-ons are free to try with limits. Read what happens when the free allowance ends.
- Test on a copy. Try it on a dummy spreadsheet with no real client data first.
If you are using Google Workspace through an employer or school, your administrator may restrict which add-ons you can install. In that case, ask them before looking for workarounds.
Keeping your add-ons under control
It is easy to install several add-ons for one project and forget them. Every few months, open Manage add-ons and remove anything you have not used. Fewer add-ons mean fewer permissions granted, a tidier menu and a faster-loading sheet. For shared files, tell collaborators which add-ons the sheet relies on, since a feature may not work for someone who has not installed it.
Add-ons also work well alongside the templates you build yourself. If you are tracking customers, for example, our guide to building a simple CRM in Google Sheets shows what you can do before adding anything extra. You can find related articles in our spreadsheets category.
Where to start
Write down the one spreadsheet task you repeat most often and search the Marketplace for it. Compare two or three options using the checklist above, install your pick on a practice copy and give it a week. If it does not clearly save you time, uninstall it and move on.
Frequently asked questions
Are Google Sheets add-ons free?
Some are free, some are free with limits and some are paid. Check the pricing details on the add-on's Marketplace page before relying on it.
Are add-ons safe to install?
Many are, but they can access your data, so read the permissions, check the developer and test on a copy before using real information.
How do I remove a Google Sheets add-on?
Open Extensions, then Add-ons, then Manage add-ons. Open the menu next to the add-on and choose Uninstall.
Do I need an add-on to import data from another sheet?
No. The built-in IMPORTRANGE function pulls data from another spreadsheet once you grant access to it.
