Privacy & data handling
Updated: October 28, 2026
Tool inputs and files
Browser tools process text, images and PDFs on your device. We do not upload or store these inputs or results. External resources included in your HTML preview may contact their hosting providers.
Network tools
Network tools use our Cloudflare Worker to query public webpages, Cloudflare / Google DNS, or IANA-listed RDAP registries. Screenshots use Cloudflare browsers. Your login cookies are not forwarded and query inputs and results are not saved. Screenshot limits store only dates and counts. Do not enter private hostnames, access tokens, passwords or private links.
Contact inquiries
The platform, contact account, phone number or email, message and source page you submit are saved in Cloudflare D1 and sent to the operator’s Feishu group to respond to your inquiry. Explicit consent is required before submission. Records remain until the operator deletes them.
Tool requests
Submitted titles, categories, descriptions, optional emails and timestamps are saved in Cloudflare D1 and sent to the operator’s Feishu group with the submission page URL for review until the operator removes them. To request a correction or deletion, submit the original request reference using the tool request form. Do not include additional sensitive information.
Anonymous usage
Tool and product clicks send the tool name, public URL, source page and time to the operator’s Feishu group, without visitor identity or tool input. We count page views, completed tool runs and product-link clicks in daily aggregate totals, using only public page or tool identifiers. Events never include inputs, results, files or emails. Do Not Track disables these events. Cloudflare processes network metadata to provide and protect this service. Rate limiting temporarily uses network addresses; we do not store them in our request database.
API protection Cookie
Tool pages issue a short-lived signed chjh_session Cookie to help prevent cross-site API reuse. Verification uses request metadata without storing it in the request database. The Cookie is HttpOnly and cannot be read by page scripts.
Language preferences and favorites
The entry page uses Accept-Language to choose Chinese or English, with Chinese as the fallback. Manual selection saves a chjh_locale Cookie for one year, solely for language choice. Favorites are stored in localStorage on your device. Clear site data or un-star tools to remove them.
External websites
Product and 2FA links lead to separate services with their own terms and privacy policies. We do not receive the data you enter there.