Preflight Privacy Policy

This policy explains what Preflight, our Chrome extension for website launch checks, does with your data: what it reads, what stays in your browser, and the one case where anything is sent to us.

Last updated: November 10, 2026

Preflight is a free Chrome extension made by Rango Design and Tech Solutions (“Rango”, “we”, “our” or “us”). It checks a web page for build leftovers, accessibility, SEO, speed and broken links before launch.

The short version: Preflight runs its checks in your browser, and your results stay on your device. Nothing is sent to us unless you choose to send feedback.

1. What Preflight reads

When you click the Preflight icon, it reads the page open in that tab: its HTML, text, headings, links, images, meta and social tags, and loading times. It uses these to run its checks and show your results.

This happens on your device. Preflight does not upload the page or your results.

2. Requests to the website you’re checking

To check a page, Preflight may make these requests, and only to the same website you’re checking:

Links: up to 60 links on the page that point to the same website, to find broken links and redirects. Links to other websites are never contacted. You can turn link checks off in Settings.
Sitemap: the website’s sitemap.xml, to list its pages for All pages.
Favicon: on custom-coded websites, a check that /favicon.ico exists.

To check a page, Preflight may make these requests, and only to the same website you’re checking:

Links: up to 60 links on the page that point to the same website, to find broken links and redirects. Links to other websites are never contacted. You can turn link checks off in Settings.
Sitemap: the website’s sitemap.xml, to list its pages for All pages.
Favicon: on custom-coded websites, a check that /favicon.ico exists.

These are ordinary requests from your browser, like visiting those pages yourself. Preflight does not read or store your cookies.

3. Checking a whole website (All pages)

All pages checks many pages of one website. It runs only after you allow Preflight to access that website when Chrome asks.

Preflight then opens up to 50 of its pages one at a time in background tabs, runs the same checks and closes each tab. You can remove this access at any time in Chrome’s extension settings.

All pages checks many pages of one website. It runs only after you allow Preflight to access that website when Chrome asks.

Preflight then opens up to 50 of its pages one at a time in background tabs, runs the same checks and closes each tab. You can remove this access at any time in Chrome’s extension settings.

4. What Preflight stores, and where

Preflight keeps the following in your browser’s extension storage, on your device:

Your settings and theme
Issues you choose to ignore, for each website
Results for pages you checked: the page addresses and the issues found

This data isn’t synced to your other devices or sent to us. Removing Preflight from Chrome deletes it.

5. Reports you export

Copy summary puts a text summary on your clipboard. HTML, CSV and JSON reports are saved as files on your computer. Preflight doesn’t upload them, and what you do with them is up to you.

6. Feedback you choose to send

The feedback form is optional. When you click Send, Preflight sends us:

The type of feedback: feature idea, something’s broken or other
Your message
The address (URL) of the page you were checking
Your Preflight version
Your browser’s user agent (browser, version and operating system)

The feedback form is optional. When you click Send, Preflight sends us:

The type of feedback: feature idea, something’s broken or other
Your message
The address (URL) of the page you were checking
Your Preflight version
Your browser’s user agent (browser, version and operating system)

The form notes that feedback goes to our team with the page’s URL. It goes through a Google Apps Script on Rango’s Google Workspace account and is saved in a Google Sheet our team uses to fix bugs and plan features. Google hosts it for us under its Google Workspace terms.

Preflight doesn’t ask for your name or email. If you’d like a reply, add your email to the message, and please don’t include anything sensitive. We keep feedback while it helps us improve Preflight. Email hi@rango.design and we’ll delete yours.

7. What Preflight doesn’t do

Preflight has no:

Accounts or sign-in
Ads
Analytics, tracking pixels or third-party trackers
Remote code: everything it runs ships inside the extension

Preflight has no:

Accounts or sign-in
Ads
Analytics, tracking pixels or third-party trackers
Remote code: everything it runs ships inside the extension

We don’t sell or rent data, and we don’t use it for advertising, credit or lending decisions.

8. Links to other websites

Preflight links to rango.design and has a button that opens the page you’re checking in Google PageSpeed Insights. They open only when you click them, and those websites have their own privacy policies.

9. Permissions Preflight asks for

Each permission has one job:

activeTab and scripting: run the checks on the tab where you click Preflight
storage: keep your settings, ignored issues and results on your device
Optional website access: Chrome asks you first, before Preflight can open and check a website’s pages for All pages
script.google.com and script.googleusercontent.com: send feedback, only when you click Send

10. Chrome Web Store User Data Policy

Preflight’s use of information received from Chrome APIs adheres to the Chrome Web Store User Data Policy, including the Limited Use requirements.

11. Children’s privacy

Preflight is a tool for people who build websites. It isn’t meant for children under 13, and we don’t knowingly collect their data.

12. Changes to this policy

If Preflight’s data use changes, we’ll update this page and the date at the top before that version is released.

This policy covers the Preflight extension. Our website has its own privacy policy at rango.design/privacy-policy.

13. Contact us

Questions about Preflight or this policy, or want your feedback deleted? Write to us.

Email: hi@rango.design
Address: 919, 9th Floor, Shekhar central, Indore, India - 452001

Email: hi@rango.design
Address: 919, 9th Floor, Shekhar central, Indore, India - 452001