Terms of Use
These terms govern use of ontoom.com.br, the tools, and the blog. If you do not agree, do not use the site. Using a tool, reading an article, or sending the form means you have read these rules.
Updated: October 5, 2026
The service
Ontoom provides online tools and supporting text for development, testing, staging, and study. Basic use is free and the service is provided as it is. We may change, remove, or interrupt a tool, an article, or the whole site without individual notice.
There is no guarantee of continuous availability, of compatibility with your system, or that a result is fit for a use these terms forbid.
Allowed use
You may use the generators and validators for legitimate software engineering and learning:
- fill staging forms and automated tests
- build fixtures, seeds, and samples in technical docs
- study a format, a mask, and a check digit
- inspect a JWT, JSON, Base64, a QR code, or an HTTP status in your own environment
The result must stay in a test, study, or technical-draft context. Do not present the value as a document of a real person or company.
Nature of generated data
CPF, CNPJ, RG, driver’s-license samples, IBAN, SSN, VAT, names, and addresses produced here are synthetic. A check digit can match without the number existing at the tax authority, a bank, or any official registry.
Mathematical validity is not permission to use the value. It is not a certificate and it does not prove that a person or company exists.
Prohibited use
You must not use the site, the content, or any result for:
- fraud, scams, or false documents
- opening or changing an account, benefit, real invoice, real bill, or contract in someone else’s name
- submitting an invalid document to a bank, carrier, marketplace, or public agency
- spam, phishing, social engineering, or intrusion
- automated load that harms other visitors
We may block access and cooperate with authorities when there is a sign of illegal use. The ban applies even if the tool “accepts” the number.
Intellectual property
The Ontoom name, layout, original text, and site code are protected. You may use the tools under these terms and quote a page with a link to the source.
Do not bulk-copy the site and republish it as your own, and do not resell access. Sample code published on a tool page may be used in your test project; that does not transfer the brand.
Limitation of liability
To the extent Brazilian law allows, Ontoom is not liable for damage from misuse, from a decision based on a synthetic number, from service interruption, or from third-party content (ads, analytics, the form processor).
The tools are not legal, accounting, or security advice. Check in your own system whether the format matches the test you need.
Ads and third parties
Pages may show Google AdSense ads (publisher pub-4592545181088283). A click goes to a third-party site with its own terms and privacy policy.
The contact form is delivered through Web3Forms. Analytics and session maps use Google and Microsoft, as described in the Privacy Policy. Those providers are not Ontoom.
Contact, language, and changes
Questions about these terms: Contact or ontoomtools@gmail.com. No phone number is published.
If a translation conflicts with the Portuguese page, Portuguese prevails. We may update the terms; the date at the top is the current version. Continuing to use the site after a change means you accept the new text. Brazilian law governs use of the site.