Cookie Policy

What are cookies?

Cookies are small text files that a website (or a third-party service embedded in it) stores on your device to remember information between visits. Similar technologies include localStorage, sessionStorage, and IndexedDB.

First-party storage we set

We use small amounts of first-party storage to make the site usable. None of this data is sent to our servers unless noted.

Technology	Purpose	Sent to server?
localStorage	Theme, recently-used tools, tool defaults, consent state	No — stays in your browser
sessionStorage	Short-lived tool state (currency rate cache, paste-router payloads)	No — cleared when you close the tab
IndexedDB	Code Editor multi-tab persistence, workbench file handoff	No — stays in your browser
PHP session cookie	CSRF protection on the contact form only (set only when you visit that page)	Yes, session-only, first-party, expires when you close the browser

Third-party advertising cookies — Google AdSense

This site is funded by advertising. We use Google AdSense (operated by Google LLC) to serve those ads. AdSense and its partners set cookies in your browser when ads load. The most common ones are:

Cookie	Set by	Purpose	Typical lifetime
`__gads`	Google AdSense	Ad delivery, frequency capping, measurement	Up to 13 months
`__gpi`	Google AdSense	Personalization signal	Up to 13 months
`IDE`	Google DoubleClick	Ad targeting and conversion measurement	Up to 13 months
`NID`	Google	Ad preferences and security	Up to 6 months
Vendor cookies	Google ad partners	Bidding and measurement when partners participate in the auction	Varies

Google may use this data, alone and combined with information from other Google services, to deliver personalized ads, measure ad performance, and protect against fraud and abuse. See the Google Ads & Privacy page for the authoritative description.

If you decline advertising in our consent banner (or if you are in a region where consent is required and you have not granted it), Google is configured to serve non-personalized ads, which use far fewer signals.

Optional analytics

If you accept analytics in the consent banner, we may load a lightweight analytics script and a first-party beacon to count aggregate page views. We do not use analytics to build profiles of individual users.

What we do not use

No social-media widgets that set cookies
No cross-site fingerprinting or device identification
No selling of personal data to data brokers

Other third-party requests

A handful of tools make client-side requests to external APIs when you use them. These requests go directly from your browser:

Currency Converter — live FX rates from frankfurter.app (ECB) with open.er-api.com as fallback
IP Lookup — geo data from ipapi.co, ipwho.is, geojs.io
Google Fonts — web fonts from fonts.googleapis.com (we self-host where practical)

Controlling cookies and consent

Reopen our consent banner: Manage cookie preferences
Manage Google ad personalization: adssettings.google.com
Industry opt-outs: DAA WebChoices (US) · Your Online Choices (EU)
Browser controls: View and delete site data in your browser's privacy settings, or block third-party cookies entirely

Blocking advertising cookies will not prevent you from using any tool on this site.

Changes

If our cookie usage changes, we'll update this page and the Last updated date.