Privacy policy

Last updated: 2026-10-06

Who is responsible

This site is operated by Hangzhou In-Stacks Technology Co., Ltd. (杭州入栈科技有限公司), which decides how the data described on this page is handled. You can reach us through the contact page.

Tools run in your browser

Every tool on this site processes the data you enter entirely inside your browser, using the JavaScript engine already present on your device. Your input is not transmitted to a server, is not written to a log, and is not readable by us. This is why you can format a production configuration file or compress a personal photograph here without an upload step.

Storage on your device

Some tools remember your settings, such as a preferred indent width, in your browser's localStorage. That data stays on your device, is never sent anywhere, and you can delete it at any time through your browser's site settings.

Advertising

This site may serve advertisements through Google AdSense. When ads are shown, third-party ad servers or ad networks use technology to send the advertisements and links that appear on this site directly to your browser; they automatically receive your IP address when this occurs, and may also use cookies, JavaScript or web beacons to measure the effectiveness of their advertisements and to personalise the advertising content you see.

Google and its partners may use cookies to serve ads based on your prior visits to this or other websites. Cookies allow an ad service to tailor adverts that are shown to you. You can opt out of personalised advertising by visiting Google Ads Settings. You can also opt out of third-party vendor cookies for personalised advertising at aboutads.info/choices.

If you are located in the European Economic Area, the United Kingdom or Switzerland, the site shows a consent message provided by Google, a certified consent management platform, and personalised advertising is only served according to the choice you make there. You can change that choice at any time through the "Ad privacy choices" link in the footer, which appears whenever the consent message is active for your region.

Hosting records

Like any website, the hosting provider that serves these static files keeps basic security and traffic records, typically including IP address, timestamp and the requested path. The site itself does not run a database and has no user accounts.

Your rights

Under the GDPR and similar laws you can request access to or deletion of personal data. Because we do not collect personal data beyond the hosting records above, the practical answer is usually that there is nothing to delete — but you can still ask, using the contact address on the contact page.

Changes

If this policy changes in a way that affects how data is handled, the date at the top of this page is updated. Continuing to use the site after a change means you accept the revised policy.