What is Admin Tools?
Picture a toolbox that is always within reach, right next to your address bar. No new tab to open, no separate website to hunt down, no account to create. That is the idea behind Admin Tools by Cloud Captains, a Chrome extension that brings more than 130 small, focused utilities together in one handy popup window.
Where most online tools force you to track down a different site every time, here you find everything in one place. Turning text into uppercase, generating a password, calculating a subnet, creating a QR code, or translating a snippet of text: it all opens in the same window, with just a few clicks.
The extension is built on Manifest V3 (the modern, secure standard for Chrome extensions) and runs on Chrome version 138 or newer. The current version is 2026.4.28. You can find the extension and all the details on the homepage: cloud-captains.com/admin-tools.
Who is it for?
Admin Tools is built for people who work with technology all day but would rather not open a separate website for every little task:
- Developers who want to quickly format JSON, test a regex, or compute a hash.
- IT admins running a DNS lookup, calculating a subnet, or inspecting a certificate.
- Power users who like to clean up text, make QR codes, or look back through their clipboard history.
You do not need to be an expert to get value from it. Plenty of tools, such as the color picker, the currency converter, or the QR generator, are genuinely approachable for everyone.
Privacy by design
This is perhaps the most important thing to know: every text, math, and crypto tool runs 100% locally in your browser. Whatever you type stays on your own device. There is no server watching along, and no telemetry is collected about what you do.
Even the AI features work locally. They use Chrome's built-in Gemini Nano, an AI model that runs on your own computer. So your prompts never travel to a server in the cloud.
What about the external services?
A handful of tools naturally need the internet to do their job, for example fetching a live exchange rate or looking up a DNS record. They only make those connections when you actually use that specific tool. Think of frankfurter.app for exchange rates, dns.google for DNS lookups, or pwnedpasswords.com to check whether a password has leaked. That last one even uses k-anonymity, so your password is never sent in full.
The 11 categories
The 130-plus utilities are neatly organized into eleven categories. Here is a tour with some illustrative examples.
1. Text
Everything you might want to do with written text. Convert between upper and lower case, count statistics (words, characters, lines), create a clean URL-friendly slug, compare two pieces of text side by side with a diff, compute a hash, encode base64, or convert Markdown into HTML.
2. Web and URL
Gear for anything to do with websites. Pick a URL apart, inspect meta tags, check a robots.txt, fetch a favicon, discover which technology a site uses, generate an SPF or DMARC record, or look up an older version of a page through the Wayback Machine.
3. Security and Forensics
For anyone working on security. Encrypt text with AES, generate strong passwords and check their strength, decode a JWT token, view a certificate, check whether your password appears in a breach (Have I Been Pwned), create hashes, work with PGP, or hide a message inside an image (steganography).
4. Network
Diagnostic gear for networks. A subnet calculator, DNS lookup, MAC address vendor lookup, WHOIS records, a speed test, a ping, or an ASN lookup.
5. Dev and System
The daily helpers for developers. Format code, work with YAML, JSON, and CSV, test a regex, use a REST client, calculate chmod permissions, build a crontab, convert cURL into fetch, or glance at a git cheat sheet.
6. Time and date
Tools for calculating with and converting dates and times.
7. Numbers and math
Calculation, conversion, and math tools for those moments when you need a quick answer.
8. Image and QR
Visual gear. Generate a QR code, create a special wifi QR so guests can connect with a single scan, pick a color, read the EXIF data from a photo, or check the contrast between two colors for accessibility.
9. Utilities and privacy
A collection of practical tools. View information about your device, validate an IBAN account number, convert currencies, look back through your clipboard history, or decode an Outlook Safelink back into the real URL.
10. AI Assistant
A complete AI assistant that runs entirely on your own device. More on that in the next section.
11. AI right-click actions
Beyond the popup window, the AI features also offer six handy right-click actions, covered a little further down.
The AI assistant, local and private
The AI Assistant runs on Chrome's built-in Gemini Nano and does everything on your own device. Not a single prompt leaves your computer. What can it do?
- Chat with an AI assistant
- Summarize long texts
- Translate into another language
- Write and rewrite text
- Proofread for mistakes
- Generate and explain regex
- Generate and explain cron schedules
- Generate SQL
- Come up with a commit message or branch name
- Create a JSON schema or convert JSON into TypeScript
- Generate a cURL command or a .gitignore file
- Explain code
- Draft an email
On top of that, there are six right-click actions you can run on selected text or the whole page: summarize, translate, proofread, rewrite, turn the page into Markdown, or grab the media URLs from a page.
Opening a tool from the popup window
Opening a tool is deliberately kept simple. Here is how it works.
Open a tool in three steps
- Click the Admin Tools icon in the Chrome toolbar, top right next to the address bar. The popup window appears.
- Choose one of the 11 categories, or type a keyword to quickly find the right utility.
- Click the tool you need. It opens right away in the same window, ready to use.
Pin the extension
Do not see the icon right away? Click the puzzle piece (the extensions button) at the top right of Chrome and pin Admin Tools. That way it is always within reach.
What permissions does the extension ask for, and why?
A good extension only asks for what it truly needs. Admin Tools is transparent about this. Below you can see what each permission is for.
| Permission | Used for |
|---|---|
| activeTab | Reading the current tab, and only after you click |
| scripting | Reading the page read-only into the popup window |
| storage | Remembering your local preferences, not synced |
| clipboardRead | Showing your clipboard history |
| clipboardWrite | Making the copy buttons work |
| cookies | Making the Cookie editor work |
| contextMenus | Adding the six right-click AI actions |
Be careful with sensitive data
Tools like the Cookie editor and the clipboard history can show sensitive information, such as login details or copied passwords. Use them mindfully, especially on a shared computer. The data stays local, but anyone looking over your shoulder can still see it.
Why you will find this handy
The biggest benefit is saved time and peace of mind. Instead of ten separate websites with ads, cookie banners, and accounts, you have one calm collection of tools that just work. And because most of it runs locally, you never have to worry about sensitive text or passwords ending up on some server.
Want to try it yourself? Take a look at the extension on cloud-captains.com/admin-tools.
Does Admin Tools cost anything?
The extension brings 130+ utilities together in one popup window. You can find all the details about availability and installation on the homepage cloud-captains.com/admin-tools.
Does my data go to a server?
No, not for the text, math, and crypto tools, and not for the AI features either. They all run locally in your browser. Only a few tools that naturally need the internet, such as exchange rates or a DNS lookup, contact an external service, and only when you use that tool yourself.
Does the AI work without internet?
The AI assistant uses Chrome's built-in Gemini Nano, which runs on your own device. Your prompts do not travel to the cloud. Your browser does need to support the model, and for that you need Chrome 138 or newer.
Which Chrome version do I need?
You need at least Chrome 138. The extension uses Manifest V3, the modern and secure standard for Chrome extensions.
Why does the extension ask for access to my cookies and clipboard?
Those permissions belong to specific tools. The cookies permission lets the Cookie editor work, and the clipboard permissions power the clipboard history and the copy buttons. The extension asks for no access it does not need, and everything stays local.
How do I quickly open the right tool?
Click the Admin Tools icon next to your address bar, choose a category or type a keyword, and click the tool. It opens right away in the same window.