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DevToolkit Pro

Privacy Policy

Last updated: August 4, 2026

01

Our Principle: Privacy First

DevToolkit Pro is built with privacy first as a core philosophy. All tools run entirely in your browser via client-side JavaScript — your tool input data never leaves your device.
02

Personal Data We Do NOT Collect

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  • We do not collect your name, email, phone number, or any personally identifiable information.
  • We do not require you to create an account to use any tool.
  • We do not transmit your tool input data (JSON text, keys, passwords, etc.) to any server.
  • We do not sell or share any of your tool input data with third parties.
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03

Local Storage (Necessary Only)

We use browser localStorage to remember your necessary feature preferences. This data is stored only on your device and is never transmitted to our servers:
  • Theme preference (light/dark mode)
  • Interface language selection (Chinese/English)
  • Your favorite tools and recently used records
  • Tool data you actively enter (e.g., text in the JSON formatter, for session recovery only)
You can clear localStorage at any time via your browser settings.
04

Local Computation

All tool operations (formatting, encoding, hashing, encryption, etc.) are performed locally in your browser via the Web Crypto API and JavaScript. Your tool input data is processed in memory and discarded when you close the page.
05

Third-Party Services (Anonymous Analytics & Ads)

To continuously provide the service for free and improve the product experience, this website uses the following anonymous aggregate third-party services. These services are operated by Google LLC and their processing is governed by their official policies.
  • Google Analytics: Used to anonymously aggregate statistics on website traffic, page dwell time, tool usage distribution, etc., helping us understand user needs and optimize the product. Data is processed anonymously and is not linked to personal identity. You can opt-out by installing the Google Analytics Opt-out browser add-on.
  • Google AdSense: Used to display content-relevant advertisements to support free operation. Google AdSense may use cookies to show personalized ads based on your browsing history (only enabled after you consent), otherwise non-personalized ads are shown. AdSense data processing follows the Google Ads Policy.
The above third-party services operate servers in the US and other countries/regions. Their data processing follows the Google Privacy Policy. You may withdraw your consent at any time via "Cookie Settings" below.
06

Cookies & Consent Management

This website uses cookies and similar technologies. You can manage your consent preferences at any time via the Cookie banner shown on first visit or via "Cookie Settings" below.
  • Necessary Storage (always enabled): Saves theme preference, language selection, favorite tools, recently used records. Stored in browser localStorage only. Never sent to any server.
  • Analytics Cookies (optional): Set by Google Analytics for anonymous visit behavior statistics. Enabled only after your explicit consent.
  • Ad Cookies (optional): Set by Google AdSense for personalized advertising or frequency capping. Enabled only after your explicit consent.
Your consent preference is recorded in browser localStorage for 180 days. Withdrawing consent does not affect the use of necessary features.
07

Hosting Provider

This website is hosted on a third-party platform (e.g., Netlify). The hosting provider may collect standard server access logs (IP address, request time, User-Agent) as part of normal server operations. These logs are subject to the hosting provider's privacy policy and are used for security protection and DDoS mitigation.
08

Future Changes

If additional third-party services are added or data processing methods change in the future, we will update this privacy policy and prominently disclose and obtain your consent before enabling them.
09

Your Rights

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  • Clear all local data by clearing localStorage for this site in your browser.
  • Withdraw or change your consent at any time via "Cookie Settings" in the Cookie banner.
  • Use this site in a private/incognito window to avoid storing any data.
  • Contact us at the email below if you have questions about this policy.
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10

Contact

Privacy inquiries: mainxbegin@163.com
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