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Terms of use

These terms apply to the ThoughtAsylum Toolbox at toolbox.thoughtasylum.com (the “site”), run by Stephen Millard (“I”, “me”). By using the site you agree to them; if you don’t agree, please don’t use it. They were last updated on 16 October 2026. If I change them, the new version applies from when it’s published here.

In short: the tools are free, are offered as they are, and you use them at your own risk. I’ve worked hard to make them accurate and to keep what you enter in your browser, but I can’t promise that they’re free of mistakes, and I’m not responsible for what happens as a result of using them.

1. A free service, as it is

The site and every tool, guide, example and piece of help on it are provided free of charge, “as is” and “as available”. To the fullest extent the law allows, I give no promise, warranty, condition or other term, whether express or implied by statute, common law or otherwise, that:

  • any tool or result is accurate, complete, reliable, up to date or fit for any particular purpose;
  • the site will be available, uninterrupted, secure or free of errors, viruses or other harmful code;
  • a tool will keep working in any particular browser or device, or offline;
  • any information on the site, including the guides and help, is correct or suits your circumstances.

Tools may be changed, renamed or withdrawn at any time without notice.

2. Checking results is your responsibility

The tools help with tasks; they don’t replace your own judgement or professional advice. Nothing on the site is legal, financial, security, accessibility-compliance, medical or other professional advice.

Before you rely on a result, check it, especially where a mistake would matter: a cleaned or redacted file before you share it, a certificate, key or configuration before you deploy it, a converted or repaired file before you delete the original, a data file before you load it into another system, and a check or test result before you act on it. Keep copies of your original files. Some tools play sound: keep the volume at a safe level, especially with headphones. You are responsible for having the right to use, copy and change the files and content you open in the tools, and for using the tools lawfully.

3. Security, and secrets you enter

The tools run in your browser. What you type, paste or choose isn’t uploaded to me or anyone else, and the site is built to stop its pages sending data elsewhere: the privacy page explains how, and how to check. I’ve taken care to make the tools as secure and isolated as I reasonably can.

No software, website or device is perfectly secure, though, and some risks are outside my control. Anything shown or entered in a browser can be seen by its extensions, by other software on the device, by whoever manages the device or network, and by anyone who can see the screen. Disconnecting from the internet after a page has loaded, as Use it offline describes, gives the strongest protection the site can offer, but it isn’t always practical, and it doesn’t protect against what is already on the device.

So take care with passwords, private keys, tokens, personal data and other sensitive material. Use a device and browser you trust, enter real secrets only when you need to, and replace any secret you think may have been exposed. You decide what to enter into the site, and you do so at your own risk.

A password you use to lock a file, in Protect / Unlock PDF or Encrypt / Decrypt, is never kept by the site and can’t be recovered or reset by me or anyone else. If you forget it, the locked file can’t be opened. Keep the password somewhere safe, and keep an unlocked copy of the file until you know the locked one opens.

Some tools run content you choose: the Package Player runs e-learning packages, and the Web Scratchpad and Markdown & HTML Preview run code you paste. Open and run only content you trust.

4. Limits of my liability

To the fullest extent the law allows, I am not liable to you or anyone else, whether in contract, tort (including negligence), breach of statutory duty, misrepresentation or otherwise, for any loss or damage of any kind arising from or in connection with the site, including from using it, being unable to use it, or relying on any tool, result, guide or other content on it. This includes, without limit:

  • loss or corruption of data, files or software;
  • the exposure, disclosure or misuse of passwords, keys, tokens or other information you enter;
  • loss of profits, revenue, business, contracts, savings, goodwill or opportunity;
  • damage to devices, systems or reputation;
  • any indirect, special or consequential loss,

even if that loss was foreseeable or I had been told it might happen. Because the site is free, if I am found liable to you despite these terms, my total liability for all claims together is limited to £100.

Some sites linked from this one, such as map services, GitHub and Buy Me a Coffee, are run by others. I am not responsible for their content, availability or how they handle your information.

5. What these terms don’t limit

Nothing in these terms limits or excludes any liability that cannot lawfully be limited or excluded, such as liability for death or personal injury caused by negligence, or for fraud or fraudulent misrepresentation. If you use the site as a consumer, nothing in these terms affects your statutory rights.

6. Names and trademarks

Product, service and company names mentioned on the site are the trademarks or registered trademarks of their owners. They’re used only to describe what a tool works with or how to do something, and don’t mean that the site is connected with, sponsored by or endorsed by those owners. More on About.

The open-source code, fonts and data the site uses are listed, with their licences, on Credits.

7. General

If any part of these terms is found to be unenforceable, the rest still applies. Not enforcing a part of these terms at some point doesn’t waive the right to do so later. These terms are the whole agreement between us about the site.

These terms, and any dispute or claim arising out of or in connection with them or the site (including non-contractual ones), are governed by the law of England and Wales, and the courts of England and Wales have exclusive jurisdiction, except that if you live in Scotland or Northern Ireland as a consumer you may also bring proceedings in your own courts.

Questions about these terms can be raised through the feedback links; they’re public, so don’t include anything private.

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