Privacy policy

Effective .

The short version

Every tool on Danfio runs inside your browser. The numbers you type — income, debts, balances — and the files you open are never sent to us and are never stored on a server. We have no accounts, no newsletter and no user database to leak.

1. What you type into a tool

Inputs stay in your browser's memory and, where a shareable link is useful, may be written into the page address (the part after the “?” in the URL). That address exists only in your browser tab until you copy it somewhere. Pressing reset, or reloading the page without the query string, removes it. We never receive a copy.

Your browser also remembers a few choices of your own, on your device and for this site only: the color theme, the light or dark setting, the currency symbol you picked, and the tools you saved or opened recently. They are kept in this site's local storage in your browser, they are never sent to us, and clearing this site's data removes them.

2. What we do not collect

3. Hosting and server logs

The site is served by a content delivery network, which keeps short-lived technical logs (IP address, user agent, requested page, timestamp) in order to deliver pages and block abuse. Those logs are generated by the host, are used for security and reliability, and are never combined with anything you type into a tool.

4. Advertising (Google AdSense)

Display advertising is how this site is meant to pay for itself, and no advertising code is running on it at the moment: Google's AdSense review has not cleared the site for advertising yet, so by our own choice the pages carry no ad unit, no Google advertising script, no advertising cookie and, since the placeholder slots came down, no reserved ad space either — the pages do not even render an empty placeholder box where an ad would go — and nothing is fetched for advertising.

This section is written to cover what happens when that changes, so the wording does not have to move twice: advertising would be served by Google and its partners, which may use cookies or similar technologies to serve and measure those ads, including personalized ads based on your previous visits to this and other websites. Google's use of advertising cookies is described in Google's own advertising policies.

5. Do Not Sell or Share My Personal Information (California)

This section answers the three questions the CCPA and the CPRA give California residents the right to ask any business — what do you hold about me, who did you sell it to, and how do I stop the sharing — and it answers them for this site specifically. The same wording is offered to visitors in the other US states whose privacy laws work the same way.

The Global Privacy Control (GPC) signal

Some browsers and extensions send a Global Privacy Controlsignal, which California treats as a valid request to stop the sale or sharing of personal information. For this site that request is satisfied the moment you send it, and without a step of any kind: nothing here reads the signal because there is nothing on this site for it to switch off. The tools behave identically whether the signal is present or not — which is also true of every other browser setting, because a tool makes no network requests of its own.

Advertising is the one place a third party would be involved, and the honest limit of this section is that we cannot speak for that party: whether a GPC signal reaches Google's ad systems and how they act on it is Google's decision, not a promise we can make on their behalf. That is why the paragraph above is about this site's own processing, and why the opt-out routes for ads are the ones described in section 4.

If a future feature ever changes any of the answers above — a newsletter, an account, a server-side converter — this section will be rewritten before that feature ships, not after, and the effective date at the top of the page will change with it.

6. Analytics

We look at aggregate traffic statistics: how many visitors open a page, which pages they open, the country and the referring site they arrived from, the kind of device and browser they used, and how quickly the page loaded. Those numbers come from Cloudflare Web Analytics, the analytics built into the content delivery network that already serves this site. It is cookieless — it sets no cookie, writes nothing to your browser and is not tied to a profile of you — and what it counts is pages, never a person or a session.

None of it comes from what you do inside a tool. There is no Google Analytics or other tracking tag on the tools themselves; the query string of a shared link (the part after the “?” that can hold your inputs) is never logged by those statistics, and neither the numbers you type nor the files you open are sent to them. If your browser blocks the measurement script — as tracker blockers do — nothing about the tools changes.

7. Children

The site is intended for adults making financial, housing, tax or file decisions. It is not directed at children, and we do not knowingly collect personal information from children.

8. Your rights

Because we hold no personal data about tool users, there is usually nothing to export or delete on our side. If you believe we hold information about you — for example an email you sent us — write to contact@danfio.com and we will respond within 30 days. Requests about advertising cookies should go to Google, which controls that processing.

9. Changes to this policy

If the site adds a feature that changes any statement above — for example a newsletter or an optional cloud account — this page will be updated and the effective date changed before that feature ships.

Related pages: terms of use, disclaimer, methodology, accessibility.