Privacy Policy
Last updated: 19 September 2026. This policy covers the SlideSmith Chrome extension, the SlideSmith sidekick add-on for Google Slides, and the website useslidesmith.com.
1. Who is responsible
SlideSmith is published by Olivier Fournier, an individual developer based in France, who is the data controller. Contact for anything in this policy: support@useslidesmith.com.
2. The short version
- Your slides, their text and your chart labels never leave your browser and your Google account.
- To draw a chart, the extension sends the chart's numbers only to the SlideSmith server, which computes the chart geometry and sends it back. No series name, category name, title or any other text is sent.
- SlideSmith stores your email address to know whether you hold a license. It does not sell data, does not show advertising and does not use analytics or tracking cookies.
3. What SlideSmith processes, and why
| Data | Purpose | Kept for |
|---|---|---|
| Email address (from Google sign-in or typed for an email code) | Identify your account and resolve your license or seat | While your license or your organisation's subscription exists; deleted on request afterwards |
| One-time sign-in codes (stored hashed) | Email-code sign-in | 10 minutes |
| Session records: a hashed session token, a random identifier of the extension installation, extension version, browser family, first and last activity dates | Keep you signed in, count devices per account, detect license sharing | Deleted 30 days after the last activity or after you sign out |
| Organisation and seat records: organisation name, administrators' and members' emails, seat count, validity dates | License management by you or your organisation's administrator | While the subscription exists; deleted on request afterwards, except invoices, kept as long as the law requires |
| Chart numbers: the numeric values of a chart, series visibility flags and measured label widths | Compute the chart model and the label layout on the server | Not linked to your account. The computed result is cached for up to 24 hours under a hash of the numbers, then deleted |
| Feedback you choose to send: your message, optional attachments, extension version and a technical log of the session (never slide content) | Support and product improvement | 24 months |
| Audit log: sign-ins, license decisions (sampled), administrative actions, with the email concerned | Security and dispute resolution | 12 months |
| Server request logs: IP address, time, route, status. Request bodies are never logged | Security, rate limiting, debugging | A few days, at our hosting provider |
| Payment data, once paid plans open: handled by Stripe. SlideSmith receives the customer and subscription identifiers, never the card or bank details | Billing | As long as the law requires for accounting records |
Legal bases under the GDPR: performance of the contract with you (account, license, chart computation, billing), legitimate interest (security, abuse prevention, product improvement from feedback), and legal obligation (accounting records).
4. What stays on your side
- The chart's full definition, including its text, is stored inside your own presentation, in the description (alt text) of the chart image. It lives and travels with your Google Slides file, under your Google account's rules.
- The SlideSmith sidekick add-on runs inside your Google account. It inserts and updates chart images in the presentation you have open. It sends nothing to SlideSmith and has no server of its own.
- Your preferences and your session token are stored locally by the extension in Chrome's extension storage.
5. Google user data
When you sign in with Google, SlideSmith requests the openid, email and profile scopes and keeps only your email address. The add-on requests access to Google Slides presentations and permission to show its interface inside Slides; it uses them only to insert and update SlideSmith charts in the presentation you are editing. SlideSmith's use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. Google user data is never used for advertising, never sold, never used to train models, and is not read by humans except where you ask for support, for security purposes, or where the law requires it.
6. Cookies
The website sets two strictly necessary cookies: one that keeps you signed in on useslidesmith.com and a short-lived one that protects the Google sign-in round trip. There are no analytics, advertising or third-party tracking cookies, so there is no cookie banner.
7. Who processes data on SlideSmith's behalf
| Provider | Role | Location |
|---|---|---|
| Cloudflare | Hosting of the API, the database (Western Europe) and the website; request logs | EU and worldwide edge network |
| Sign-in; fonts loaded by the website and the extension; the platform the add-on runs on | EU and United States | |
| Resend | Sending sign-in codes and forwarding feedback by email | United States |
| Zoho Mail | The support mailbox | EU |
| Stripe (once paid plans open) | Payments, invoices, tax calculation | EU and United States |
Transfers outside the European Economic Area rely on the European Commission's Standard Contractual Clauses or the EU–US Data Privacy Framework, as offered by each provider.
8. Security
All traffic is encrypted in transit. Session tokens and sign-in codes are stored hashed. The administration console is behind a separate identity check. Request bodies are never written to logs.
9. Your rights
You can ask for access to your data, its correction, its deletion, its portability, or object to or restrict its processing, by writing to support@useslidesmith.com. Signing out in the extension's Settings revokes the session on that device; the Account page lists and revokes your other devices. If your seat comes from your employer, some requests may need to go through your organisation's administrator. You may also lodge a complaint with your data protection authority; in France that is the CNIL (cnil.fr).
10. Children
SlideSmith is a professional tool and is not directed at children under 16.
11. Changes
When this policy changes materially, the date at the top changes and signed-in users are told by email or in the extension before the change takes effect.