Terms of use

Last updated 7 October 2026

These terms cover using Gobo Designer at fableforge.uk/gobo-designer. They are written to be read, not to be impressive. Where the law gives you a right, these terms do not take it away.

Who provides it

Gobo Designer is provided by Ryan Anstey, trading as FableForge, Flat 103, The Antigallican Hotel, 428 Woolwich Road, London SE7 8SU, [email protected] — "we" or "us".

Using it

Gobo Designer is free. There is no account and nothing to sign up for. You may use it, and the artwork you make with it, for personal or commercial work, including sending that artwork to a gobo maker and using the gobos in productions.

What it is, and what it is not

Gobo Designer is a design aid. It calculates artwork from the fixture data and positions you give it, using published manufacturer figures and a mathematical model of the projection. Real fixtures, lenses and rigs differ from published figures, and the measurements you enter may be out. So:

• check the maker's proof before any gobo is made, and where it matters, test with a real fixture first — the calibration tool exists for this;
• the checks it runs (clipping, line widths, steel islands, focus spread and the rest) are aids, not guarantees that a gobo will look or perform a particular way;
• it does not advise on rigging, electrical or fire safety. Use gobos only in fixtures, holders and materials their manufacturers specify.

Your work and your content

The text, settings and artwork you create are yours. If you upload a font or a logo, or set text or artwork that uses someone else's name, logo or trade mark, you are responsible for having the right to use it — including any font licence covering use in artwork and manufacture.

Our content

Gobo Designer, its name, its icon and its code remain ours. It includes open-source software and fonts that keep their own licences; they are listed on the licences page.

Other people's names

Fixture, lens and software names used in Gobo Designer — such as ETC, Source Four, Robert Juliat, Chauvet, Ovation, Martin, Prolights, Vectorworks, Capture, Rosco, Apollo, GoboLand and Projected Image — are trade marks of their owners. We use them only to identify the equipment and software the tool works with. Gobo Designer is not made, endorsed or supported by any of them.

Changes and availability

We may change Gobo Designer, or stop providing it, at any time. Because it runs in your browser and saves files to your device, files you have already saved and exported stay usable.

Our responsibility to you

Gobo Designer is provided free and as it is. If you use it as a consumer, your statutory rights are not affected. To the extent the law allows, we are not responsible for any loss arising from using it or relying on its output — including the cost of gobos, materials or time — and if you use it in the course of business, our total liability to you for anything arising out of it or these terms is limited to £100.

Nothing in these terms limits or excludes our liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, or for anything else that cannot lawfully be limited.

Which law applies

These terms are governed by the law of England and Wales, and the courts of England and Wales have jurisdiction. If you are a consumer living in Scotland or Northern Ireland, you keep the benefit of the mandatory consumer protections of the law where you live, and you may bring proceedings in your local courts.

Contact

Ryan Anstey, trading as FableForge, Flat 103, The Antigallican Hotel, 428 Woolwich Road, London SE7 8SU. Email [email protected].