1. What we do not collect

We do not collect your input. Every tool computes inside your own browser (pure frontend, no server involved): the JSON, keys, phone numbers, ID numbers or plaintext you paste in is something we cannot see and nowhere we store.

No signup and no login — therefore no account, no email address, no password.

No analytics, no advertising SDKs, no third-party cookies.

2. What is stored in your own browser

To remember your preferences, this site keeps a few things in your browser's localStorage: interface theme (dark / light), language (Chinese / English), pinned and favourited tools, per-tool history, and the last form values you entered.

All reads and writes happen inside your browser process. Nothing is synced to a server, and no other website can read it (browsers isolate storage per domain).

3. The only exception: network tools

"IP Lookup", "DNS Lookup" and "HTTP Request" exist to make outbound requests. Those requests are sent by your browser straight to the target — they do not pass through this site, so the target server naturally sees your IP address and whatever you send.

HTTP Request: the request goes wherever you point it, with the headers and body you typed. Make sure you trust the target address.

IP Lookup / DNS Lookup: a single read-only request is sent to a public third-party service, which will see your public IP.

Apart from these, every other tool works fine with the network unplugged.

4. Outbound links

In-tool help text may link to third-party documentation. Once you click through, the destination site's own privacy policy applies, not this one.

5. How to delete all of it

Clear this site's data in your browser settings (or just use a private / incognito window) and everything listed in section 2 disappears at once, with nothing left behind.

To clear only your history, use the clear button in the "Local History" drawer on any tool page.

6. Changes to this policy

If analytics or any feature that sends data out of your browser is ever introduced, this page will be updated first and the date above will change. Any analytics would be self-hosted and anonymous.

7. Contact

This site collects no personal data, needs no login and has no account system. Privacy questions are always welcome through the in-site channel.