Terms of use

01Agreement to these terms

These terms are an agreement between you and Ontool for the use of ontool.xyz and every tool published on it. By using the site, you accept them. If you do not accept them, please do not use Ontool. A link to these terms appears on every page, and a tool that sends content to our server shows a notice beside its action stating that running it means you accept these terms and the privacy policy; please read them before you rely on a server-backed tool.

If you create an account, you also accept these terms and the privacy policy explicitly at sign-up. That acceptance is recorded with the version in effect and a timestamp, in your browser and in the account’s authentication metadata, as the privacy policy explains. The record exists so that there is evidence of which version you accepted. If you use Ontool without an account, your acceptance arises from your use of the site, and you can read the current version on this page at any time.

You need to be old enough to enter into a binding agreement where you live. Do not create an account if you are below the age at which you can consent to online services in your country — 13 in some countries, up to 16 in others. If you use Ontool for an organisation, you confirm you are allowed to accept these terms for it.

The privacy policy explains how data is handled and forms part of these terms. The current version of both documents is identified at the top of each page: these terms are version 1.0, dated 9 November 2026, and the privacy policy is version 1.0, dated the same day. They are intended to be read together and are updated together; if the versions shown on the two pages ever differ, the version stated on the page you are reading governs that document, and the later-dated version replaces the earlier one for future use.

02What Ontool is

Ontool is a collection of small, free browser tools: file converters, image and PDF utilities, generators, calculators, a temporary inbox and two AI document helpers. There is no subscription and no payment step. An account is optional and no tool is locked behind one.

Most tools do their work in your browser. Three of them — Temp Mail, Explain My Report and Parent Translator — rely on Ontool’s server and on third-party providers, so they depend on those services being reachable.

Ontool is not a storage service, a backup service, an email provider, a medical service, a legal service or a financial adviser. Nothing you create is saved on our side, so keep your own copy of anything you need.

03Acceptable use

You may use Ontool for personal or commercial work. You may not:

• break any law, or infringe anyone’s rights, including copyright and privacy;
• submit content you do not have the right to share, or content that is unlawful, abusive, malicious or designed to harm someone;
• automate, script, crawl or bulk-submit the server-backed tools, or circumvent the daily limits with multiple addresses, proxies or parallel requests. “Automate” and “bulk-submit” mean using bots, scripts, crawlers or automated requests, or sending unusually large volumes of requests, instead of using a tool through its normal interface. “Parallel requests” means several simultaneous automated requests rather than one at a time. “Multiple addresses or proxies” means creating extra accounts, changing network or using proxies to obtain more runs than the allowance permits;
• attempt to disrupt, overload, probe or gain unauthorised access to the site, its servers or other users’ sessions;
• use Temp Mail for spam, harassment, fraud, impersonation or account recovery;
• remove or misrepresent authorship of the site, or present Ontool’s interface as your own product;
• resell or rebrand the service as a paid product without written permission.

These rules target automated and deliberate misuse, not ordinary personal use. Several people using Ontool normally from the same office, school or household network is not a breach, although an anonymous daily AI allowance is shared across that network as explained in section 7.

We may set technical limits — file size, page count, request rate, daily AI runs or a global daily budget — and change them to keep the service available and affordable.

04Your files and content

You keep all rights to the files you open, the text you type and the documents you create with Ontool. We do not claim ownership of your input or your output, and we do not license it for our own use.

For the browser-only tools, your files never reach our servers, so there is nothing for us to license or store. For the AI tools, you give us only the limited permission needed to send your submission to Google Gemini and return the result to you. That permission ends when the request finishes. Where the submission contains health information or information about a child, that permission includes your explicit consent to that processing, as described in the privacy policy. By submitting it, you confirm that you are allowed to share it and, where the law requires it, that you have the consent of the people concerned — or that you are their parent or guardian.

You are responsible for your content: for having the right to submit it, for removing personal information you do not need to share, and for how you use the result.

Ontool’s site, design and name

The software, design, text, graphics and logos on this site, and the name “Ontool”, are owned by the operator or used under licence. We give you a limited, revocable, non-exclusive and non-transferable permission to use the site for its intended purpose. Apart from that permission, and apart from uses the law allows — such as quotation for review — you may not copy, modify, distribute, sell, sublicense or reuse the site’s code, design or branding without our written permission. Open-source components keep their own licences. The text and files you create with a tool remain yours, as described above.

Copyright complaints

The operator of Ontool is responsible for this process. Our designated contact for copyright notices is the support address in section 13; please use the subject line “Copyright notice”. If you believe material on Ontool infringes your copyright, include: the work you own, the URL of the material, your contact details, a statement that you have a good-faith belief the use is unauthorised, and a statement that the information is accurate and that you are the owner or authorised to act for them.

We aim to acknowledge a valid notice within 5 business days and complete our review within 10 business days. If the notice is valid, we will remove or disable access to the material, tell the person affected, and keep a record. We may remove content or access from users who repeatedly infringe. If your material was removed and you believe that was a mistake, send a counter-notice with the same details and the subject line “Copyright counter-notice”; we aim to review it within the same 10 business days and will restore the material if the complaint does not hold up. These timescales may be longer where we need information from you or a provider, and we will tell you if that happens.

Responsibility for your use

To the extent permitted by law, you agree to indemnify Ontool against third-party claims and reasonable costs that arise directly from your fraudulent or intentional unlawful use of the site. This is deliberately narrow: it does not cover ordinary mistakes, content you submitted in good faith believing you were allowed to share it, or anything covered by the consumer carve-out below, and it never covers our own negligence, fraud or wrongdoing.

05Tool-specific terms

Temp Mail

Temp Mail provides a receive-only disposable inbox through third-party providers. It is not an email account: it cannot send mail, and delivery, retention and availability are not guaranteed. Provider terms and limits apply in addition to these terms.

Use it only for low-risk signups where you do not need the mail afterwards. Do not use it for banking, password resets, identity documents, work accounts, unlawful activity or anything sensitive — a temporary address is not private, and the provider may keep the messages. Message content comes from third parties and may be inaccurate, unsafe or unavailable; Ontool displays it but does not endorse it. Attachments are not supported in this version.

Explain My Report

This tool explains a medical or lab document in plain language. It is informational and educational only. It is not medical advice, a diagnosis, a second opinion or a treatment recommendation, and it does not replace a clinician who knows your history. Always discuss results with a qualified professional. In an emergency, contact local emergency services rather than using this tool.

Parent Translator

This tool turns a school document into a plain-language brief. It is not a school decision, legal advice or an official interpretation. Deadlines, support, placement and rights must be confirmed with the school or the relevant authority. For legal advice, contact a qualified advocate or attorney.

A school document may contain information about a child. Submit such a document only if you are the child’s parent or legal guardian, or you have permission from someone who is. By submitting it, you confirm that you are authorised to share that information for the purpose of receiving the explanation, and you give the explicit consent described in section 4 of the privacy policy.

Both AI tools

Output is generated by Google Gemini and can be incomplete, outdated or wrong, including where a quotation is shown. Quoted excerpts for text documents are checked against the submitted text; images and image-only PDFs cannot be checked the same way. Verify every important fact before acting on it. Use the output at your own risk: to the extent permitted by law, Ontool does not accept responsibility or liability for decisions, actions or outcomes based on it, and that does not affect any liability that cannot lawfully be excluded or limited (see section 9). A failed call returns the run to your daily allowance, and the free allowance resets at midnight UTC.

Calculators

The Etsy Fee Calculator and Ad Revenue Calculator produce estimates from the values you enter and publicly known rates. Fees, tax rules and payouts change and vary by country, so the results are not financial, tax or accounting advice. Confirm figures with the platform or a professional before making decisions.

Documents, invoices and exports

The invoice, PDF, image, barcode and QR tools are utilities. You are responsible for the legality, accuracy and content of anything you generate or print, and for keeping your own copy. Invoice export uses your browser’s print or save function, so the result depends on your browser and settings. None of this is legal, tax or accounting advice.

06Third-party services

Some tools depend on other companies: Google Gemini for AI output, mail.tm, Guerrilla Mail, mail.gw or 1secmail for temporary inboxes, a public CDN for the OCR engine and our hosting and database providers. Their terms and policies apply to their part of the service, and their outages, errors or decisions are outside our control.

We are not responsible for content you receive through Temp Mail or for any third-party site you reach through a link or a QR code.

07Availability, limits and changes

Ontool is provided free of charge and on an “as available” basis. We do not promise uptime, that a tool will keep working, or that a result will be produced. We may add, change, limit or remove a tool, pause a server-backed feature to control cost or abuse, or take the site offline for maintenance, at any time and without notice.

The AI tools are limited to one free run per tool per day per connection, or three per day on a signed-in account, plus a deployment-wide daily budget. A “connection” means the network your request comes from: without an account, we keep a one-way hash of your IP address for the day, so everyone sharing that address shares the same daily allowance. A shared office, school or household network can therefore use up the anonymous allowance for that network; signing in gives you an allowance tied to your account instead. The daily count resets at 00:00 UTC, a failed run is returned to your allowance, and the deployment-wide budget may pause AI tools for everyone if total use is unusually high. These limits exist to keep the service free for everyone and are not a paid tier you can upgrade.

08Disclaimers

To the extent permitted by law, Ontool and its tools are provided “as is” and “as available”, without warranties of any kind, whether express or implied, including fitness for a particular purpose, accuracy, merchantability or non-infringement.

We do not warrant that a conversion is lossless, that a generated document is legally sufficient, that a barcode or QR code scans with every reader, that OCR output is correct, or that an AI explanation is complete or accurate. Verify results that matter.

Some jurisdictions do not allow certain warranty exclusions, so parts of this section may not apply to you. Nothing in these terms limits rights you have under mandatory consumer law.

09Limitation of liability

To the extent permitted by law, Ontool is not liable for indirect, incidental, special, consequential or punitive damages, or for lost data, lost profits, lost opportunities or business interruption arising from your use of, or inability to use, the service.

Because the service is free, we do not charge for it and our liability is limited accordingly. To the extent permitted by law, our total liability for any claim relating to the service is limited to the amount you have paid us in the twelve months before the event giving rise to the claim; where you have paid nothing, that amount is zero. That limit does not apply to, and nothing in these terms excludes or limits, liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, for wilful misconduct, or for any other liability that mandatory law does not allow to be excluded or limited.

If you are a consumer, none of this affects your statutory rights, including any remedy that cannot lawfully be waived. Where a court or regulator finds that a limit in this section is unfair or unenforceable, the rest of these terms stays in effect and that limit applies only to the extent the law allows.

You are responsible for keeping your own copies of files. Ontool does not store them, so there is nothing for us to restore.

10Ending or restricting use

You can stop using Ontool at any time. If you created an account, you can ask us to delete it. We may block or limit access if we see abuse, attempts to evade limits, attacks on the service or unlawful use. We normally apply a restriction at the level of the account, the IP address or the request pattern involved, and we try to target the actual source rather than a whole network. A shared network can still be affected by one person’s conduct; if that happens, contact us and we will look at it.

Where it is reasonable and safe to do so, we will tell you the reason for a restriction. You can ask us to review it by emailing the address in section 13; we will reconsider it and restore access if it was applied in error. A restriction does not affect any rights you have under mandatory law, including your right to complain to a regulator.

11Governing law

These terms are governed by the laws that apply where the operator of Ontool is established, without regard to conflict-of-law rules. If you are a consumer, you also keep the protection of the mandatory laws of the country where you live, and you may bring a claim in your local courts.

Before starting a formal dispute, please contact us so we can try to resolve it directly.

12Changes to these terms

We may update these terms when the tools or the law change. The current version is always on this page, with its version number and date at the top, and older versions are available on request. An update takes effect from the date and version shown at the top of the page, or from a later effective date stated in the notice.

A change is material if it affects your rights or obligations, how your data is handled, the availability of a tool you use, or the limits that apply to it. If a change is material, we will describe it on this page and give at least 14 days’ notice before it takes effect, with a prominent notice on the site and, for signed-in users, an email to the address on the account. The only exception is where a shorter period is required by law or to address an urgent security or legal risk; in that case we will give as much notice as we reasonably can and explain why. Where the law requires it, we will ask you to accept the updated terms explicitly instead of relying on continued use. Continuing to use Ontool after the effective date means you accept the updated terms; if you do not agree, please stop using the site and, if you have an account, ask us to delete it.

If any part of these terms is found unenforceable, the rest stays in effect.

13Contact

Questions about these terms can be sent to ontoolsupport@gmail.com. Include the tool you used and the date, so we can help faster.