Is Cookie-Editor Safe and Privacy-Focused?

Cookie-Editor is an open-source browser extension, and its source code is publicly available on GitHub at moustachauve/cookie-editor, so anyone can inspect exactly what it does. The project is developed by an independent developer, Christophe Gagnier (known as Moustachauve), and the site states that your privacy is important and that the extension is "simple, secure and open-source." If your main concern is whether you can verify what the tool does before trusting it with your cookies, the open-source nature is the key answer: you don't have to take the developer's word for it.

What "open-source" actually means for your safety

Because the full source is published, the safety argument rests on verifiability rather than a promise:

You can read the code yourself before or after installing, and check how cookies are read, created, edited, or exported.
Others can review it too, so problems are more likely to be noticed and reported.
The project accepts contributions, which means the codebase isn't a black box controlled by one party.

This is different from a closed extension where you can only rely on the developer's description. With Cookie-Editor, the description and the implementation can be compared directly.

What the site says about privacy

The site's stated position is short and specific:

"Your privacy is important."
Cookie-Editor is described as "simple, secure and open-source."
A privacy policy is linked from the page.
The developer is identified by name, and there's a public issue tracker for suggestions and bug reports.

The page does not claim that no data is collected or shared — that specific wording isn't in the provided material. So the accurate statement is: the project emphasizes privacy, is open-source, and publishes a privacy policy you can read for the details. If data handling matters to you, read that policy rather than assuming.

How to check it yourself

If you want to make your own judgment instead of trusting a summary:

Go to the GitHub repository moustachauve/cookie-editor.
Look at the source files and recent activity to see how the extension handles cookies.
Read the linked privacy policy on cookie-editor.com.
Check the GitHub issue tracker for bug reports or concerns raised by other users.
Install from the official listing for your browser (Chrome, Firefox, Safari, Edge, or Opera) rather than a third-party copy.

Expected result: you'll know what the extension does with cookie data and whether the published behavior matches the description.

Who maintains it, and why that matters

Cookie-Editor is developed by an individual, Christophe Gagnier, not a large company. That has two sides:

Transparency upside: the code and issue tracker are public, and the project is supported by named sponsors (DigitalOcean, Tab for a Cause), which is disclosed on the page.
Consideration: an independent project depends on one maintainer's ongoing attention. If long-term maintenance is critical to you, check the repository's recent commit activity before relying on it.

Practical safety notes when using any cookie editor

These apply to Cookie-Editor and to cookie tools generally:

Exported cookies are sensitive. The extension can export cookies to your clipboard for sharing or saving. Treat exported cookie data like a password — anyone who has it may be able to impersonate your session.
Editing cookies can break a site. Changing or deleting cookies for the current tab can log you out or disrupt site behavior. This is expected, not a bug.
Install from official sources. Use the browser's own extension store or the project's official links to avoid modified copies.

Bottom line

Cookie-Editor is safe to evaluate because it's open-source and independently reviewable, and the project explicitly frames privacy as a priority with a published policy. Whether it's safe for you depends on your own review of the code and policy, and on how carefully you handle exported cookie data. If you want a cookie editor you can inspect rather than trust blindly, this one gives you that option.