Is ColorZilla safe?
ColorZilla is made by Iosart Labs LLC. Its Chrome Web Store listing says the developer "will not collect or use your data", and its privacy page says the same. It has run on Chrome's Manifest V3 since version 4.1. At install, Chrome warns it can access your tabs and data on all websites. An eyedropper needs that.
ColorZilla safety at a glance
| Item | ColorZilla |
|---|---|
| Made by | Iosart Labs LLC (Dover, Delaware, US) |
| Open source | No public source code that we found |
| Manifest V3 | Yes, since version 4.1 |
| Latest version | 4.1 (ColorZilla's version history) |
| Account needed | None mentioned on its official pages |
| Site access | All websites |
| Data collected | None, per its store listing and privacy page |
| Store record | "follows recommended practices for Chrome extensions" |
Who makes ColorZilla?
ColorZilla is made by Iosart Labs LLC, a company based in Dover, Delaware, in the US. The Chrome Web Store lists Iosart Labs LLC as the publisher, and ColorZilla's own privacy policy says it is "owned and managed by iosart labs llc". The iosart blog announced ColorZilla for Chrome in January 2012, in a post by Alex Sirota.
Is ColorZilla open source?
No, not as far as we could find. We found no public source code for ColorZilla, so you can't read what it does line by line. That doesn't make it unsafe. It means you rely on the developer's statements, the store's data labels and the install prompt, rather than on code anyone can check.
Is ColorZilla a Manifest V3 extension?
Yes. ColorZilla moved to Manifest V3, Chrome's current extension platform, in version 4.1. Its official version history describes 4.1 as "moving to Chrome's latest Extension Framework (Manifest V3) to enhance security, improve performance and compatibility". We couldn't confirm when 4.1 reached the Chrome Web Store, so we don't give a date.
What is the latest version of ColorZilla?
The newest version in ColorZilla's official version history is 4.1, the release that moved it to Manifest V3. We found no later version. We couldn't confirm the date the Chrome Web Store shows as "Updated", so check that line on the listing before you install. It tells you how recently the developer shipped a change.
What data does ColorZilla collect?
None, according to the developer. The Chrome Web Store's privacy section for ColorZilla says: "The developer has disclosed that it will not collect or use your data." ColorZilla's own privacy page for the Chrome extension says the same thing in stronger words. The developer doesn't say where the extension keeps your saved colors.
From ColorZilla's Chrome privacy page, colorzilla.com/chrome/privacy:
"ColorZilla DOES NOT collect any of your data or your browsing activity on any websites."
The store listing also says ColorZilla "follows recommended practices for Chrome extensions".
What permissions does ColorZilla need, and why?
When you install it, Chrome warns that ColorZilla can "access your tabs and your data on all websites". A color picker has to read the page you click on, on any site, to sample a color. The developer doesn't publish its full permission list, so read the install prompt before you click "Add".
| What Chrome shows | What it lets the extension do | Why a color picker asks for it |
|---|---|---|
| "Access your tabs and your data on all websites" | See your open tabs and read the pages you visit | To pick colors from whatever page you are on |
| Anything else in the install prompt | Not published by the developer | Check the prompt yourself. It should not ask for more than color work needs. |
Has ColorZilla had security problems?
We found no security incident, store removal or change of owner in our check on 29 September 2026. The Chrome Web Store says the publisher "has a good record with no history of violations". Iosart Labs still publishes it. If that changes, the store's "Offered by" line on the listing would show a different name.
How can I check ColorZilla myself?
Open the official Chrome Web Store listing and check that the publisher is Iosart Labs LLC. The "Privacy practices" tab should say the developer will not collect or use your data. When you click "Add to Chrome", the install prompt lists the access it wants. Compare it with the table above.
A few more checks:
- Look at the "Updated" date on the listing. A recent date means it is still maintained.
- Search the name carefully. There are many color-picker extensions with similar names. Install from the listing we link to.
- Remove it when you stop using it. Any extension with access to all sites is one more thing to trust.
Good to know
ColorZilla can read every page you visit. That's how an eyedropper works, but you are trusting Iosart Labs with that access. The website colorzilla.com has a separate privacy policy. It says the site's servers log things like your IP address and browser type, and "we do not collect, sell or rent your personal information without your explicit permission".
Read more
ColorZilla is a third-party extension, not built or maintained by Xplorekit. We link to the official Chrome Web Store listing. Installing it, and what data it handles, is between you and Iosart Labs. We don't show ratings or user counts because we can't verify them.