Privacy policy

This is a courtesy translation. These terms are governed by French law, and the French version prevails in the event of any difference between the two.

In short

• Audio is never kept. It is transcribed as it passes, then gone. No copy on our servers.
• Nothing is listened to without your explicit consent, given once and revocable.
• We sell nothing to anyone and use no advertising trackers.
• You can export everything and delete everything in one click, from your account area.

Who is responsible

The data controller is Loïc Demanou, publisher of Klarsono, established in France. For any question, or to exercise your rights: [email protected]. The full details, and those of the hosts, are on the Legal notice page.

What we collect

Your account

Your email address and — if you sign in with Google — your name and profile picture, along with a technical identifier provided by Google. Never a password: we do not ask for one.

Your usage

The number of minutes used, by day and by type of call (voice, transcription, translation, summary). We record counters, not content: not the title of the video, not its address, not what is said in it.

On your device

Your session token (in the browser’s local storage), your extension settings (language, voice, speed) and an audio cache in IndexedDB, which lets you listen to a video again without being charged for it twice. That cache never leaves your browser, and you can empty it by clearing the site’s data.

Your visit to the site

If you accept: the pages viewed, the sections read and the actions taken on this site (playing a voice sample, opening a question, clicking a button). This serves to know what interests you and to improve the pages — never for advertising, never resold. If you decline, none of it is collected and the site works exactly the same. The anonymous visit count uses neither cookie nor identifier and cannot recognise anyone.

Administration log

When an administrator acts on an account (granting minutes, changing plan, suspending), the action, its reason and its author are logged. That is a safeguard for you.

Why

To provide the service you asked for (performance of the contract), to count minutes and bill correctly (legitimate interest and accounting obligation), and to detect abuse that would put the service at risk (legitimate interest). Listening to a tab’s soundtrack rests on your consent, which you may withdraw at any time.

Who the data passes through

Klarsono relies on technical providers. None of them receives your identity: they receive text or audio to process, and nothing that would reveal whose it is.

• Cloudflare — hosting of the site, the API and the database (European Union).
• Google — signing in with a Google account; translation, summaries and fallback transcription; speech synthesis for some of the languages.
• Amazon Web Services — speech synthesis for the other languages, processed in the Paris region.
• Soniox — live transcription. The audio goes straight from your browser to them, with a key valid for 60 seconds: it does not pass through our servers.
• LWS — sending the sign-in emails.
• Google Analytics — site analytics, only if you accept. The script is not even downloaded before you agree.
• Cloudflare Web Analytics — anonymous visit counting, without cookie or identifier: it cannot recognise you, nor follow you from one site to another.

Some of these providers are established outside the European Union. Transfers rely on the European Commission’s standard contractual clauses.

For how long

Audio: never kept. Usage counters: three years after the end of the relationship. Accounting records, once the paid plans open: ten years, as the law requires. Your account: for as long as it exists. On deletion, your personal data is erased; only aggregated statistics remain, which can no longer identify you.

The extension’s permissions

Each one serves a precise purpose, and nothing else.

Access to the sites you visit

To find the video player and its subtitles on any site. The extension does not read the rest of the page and never sends the list of sites you visit anywhere.

Tab audio capture

Only when the video has no subtitles, only after your explicit consent, and only on the tab concerned. Never in the background.

Offscreen document

To play the translated voice without it being re-recorded by the capture. It is a technical necessity, not a collection.

Storage

To remember your settings and your session. Stays on your device.

Identity

To sign you in with your Google account, if you choose that way in.

Cookies and analytics

No advertising cookie, no cross-site tracking, no resale. The site uses your browser’s local storage to keep your session open, and to remember the answer you give below.

Analytics asks for your agreement, and does not start without it: until you have answered, or if you decline, no measurement script is loaded and nothing leaves your browser. Declining takes the same click as accepting, and you may change your mind here at any time.

Your rights

Access, rectification, erasure, portability, objection, withdrawal of consent. Two of them are directly in your account area: export all your data and delete your account. For the others, write to us. You may also lodge a complaint with the CNIL, the French data protection authority (cnil.fr).

Changes

If this policy changes significantly, we will tell you by email before the change takes effect.