Last updated 27 August 2026. Published by Build Tuit LLC. Questions about anything here go to hello@tuit.dev.
These terms cover your use of BitRaster Pixel Studio (the “Service”), provided by Build Tuit LLC. They apply to everyone who uses the Service, whether or not you have an account - using any part of it means you agree to them. If you do not agree, do not use the Service.
Parts of the Service are open to everyone. You do not need an account to browse this site or to download the desktop application. Opening a drawing somebody has shared with you, and watching someone draw through a link they have shared, need no account either. Keeping a copy of a shared drawing does need one, because it has to be kept somewhere.
The editor needs no account. Drawing, importing, editing and exporting are open to everyone, on the web and in the desktop application alike. Work made that way is kept on your own device and nowhere else - see “Work kept on your device” below, and “What needs an account” for the parts that reach us.
You can give a drawing that lives in your account a share link. Anyone who has that link can open a page showing the drawing and play its animation, without an account of their own. You choose how much the link gives away, and the choice is a ladder of three steps, each of which includes the ones before it.
The link is live: it shows the drawing as it is now, so it keeps up as you work rather than showing the version you had when you made it. Your reference image is never included at any step, and neither are the file locations and export folders stored in your project.
A shared link also carries a preview picture, at every step of the ladder. Pasting the link into a chat or a post shows the drawing itself - the first frame, on a plain background - without anyone opening it. Nothing else about the drawing is in that picture: not its name, not yours. It comes down when the link does.
The link belongs to the drawing rather than to a moment, and it is unlisted rather than secret: we do not publish it, it is not indexed by search engines, and anyone it is passed on to can use it. The address includes the drawing’s name as it was when the link was made, so that name is visible to anyone who sees the link even if they never open it - and it does not change afterwards, so renaming the drawing leaves the old name in the address.
You can change how much a link gives away at any time without changing its address, and you can turn sharing off, which stops the link working immediately and keeps its address - so turning it back on makes every copy of it work again. Replacing a link is the separate, permanent one: generating a new URL gives the drawing a fresh address using its current name, and copies of the old one stay dead. We may revoke a link if it is reported to us for breaking these terms, and a link we have taken down cannot be brought back by turning your own sharing back on.
You can give a drawing that lives in your account a watch link. Anyone who has that link can watch you work on it in near real time, without an account of their own. What they receive is the drawing itself - its layers, frames and colors - so they can zoom, scrub between frames and switch layers off while you carry on. They do not receive any reference image you are tracing from, and you can choose to hide your layer names when you start.
The link belongs to the drawing rather than to one session, so the same link works the next time you broadcast. It is unlisted rather than secret: we do not publish it, but anyone it is passed on to can use it. You can revoke it at any time, which immediately stops everyone watching and cannot be undone - a new link is a new address, and copies of the old one stay dead. Stopping a broadcast ends the session without touching the link. We may revoke a link and end a broadcast if it is reported to us for breaking these terms.
The editor automatically keeps a recent copy of the projects you have open, and of a limited number you have recently closed, in storage belonging to your browser or to the desktop application. This is what lets a reload or a crash pick up where you left off, and it applies whether or not you have an account.
That copy stays on your device. It is never uploaded, we cannot see it, and we cannot recover it for you. It is limited in size and number: older projects are dropped to make room for newer ones, and a project too large to keep is not kept at all. Where a project has been saved to a file, we may record its location on your device so it can be reopened, rather than keeping a second copy of it.
The editor also keeps a history of how each drawing was made, in the same storage, so that a timelapse can be exported without having started a recording first. How much is kept depends on the drawing: one you have saved to a file, or that lives in your account, keeps its whole history, while one you have not saved keeps only the recent past. All of it can be turned off in Settings, and turning it off also discards what has already been kept. Like the copy above, it stays on your device.
Your device has a limit on how much of this it will hold. Histories of drawings you have closed are given up first, oldest first; if that is not enough, the application stops adding to a history and tells you, rather than quietly discarding the beginning of one you already have.
A drawing that lives in your account is the exception: its history is also sent to us, in pieces, so that it survives the device it was drawn on. The copy on your device then becomes a cache that can be cleared to make room. If a piece cannot be sent - because you are offline, for instance - the application tells you rather than leaving you to assume it arrived. A drawing that lives only on your device is never sent anywhere.
Saving a drawing to a file puts its history inside that file, so opening it on another device or in another account brings the timelapse with it, and so does copying a drawing out of your account onto your disk. The status line says when a history was written and how many steps it holds. Anyone you then give that file to can play the history back, including any layer names you typed and any work you drew and later removed - so a project file is worth thinking of as the whole making of the drawing rather than only its final state. To hand someone a file without it, turn the timelapse off for that drawing, or clear it, before saving.
It is a convenience, not a backup. Clearing your browser data, using private browsing, or losing the device loses it. Save or export anything you want to keep.
The desktop application lets its command-line companion on the same computer talk to it: list the drawings you have open, read their structure, add a layer, draw, render and save, each as an ordinary undoable edit you can see. This is on unless you turn it off in Settings under Automation. While it is on the application keeps one small file in its own data folder saying where to connect and a random key for this session, and removes that file when the setting is turned off. The connection is local to your user account on that computer; nothing about it is sent to us, and drawings in your account, in a shared room or being broadcast are not reachable through it.
An account is required for the parts of the Service that run on our servers or involve other people: generating images, keeping a library of your pieces, sharing them by link, keeping a copy of a drawing somebody has shared with you, and syncing your preferences between the web and desktop apps.
Accounts are created through our authentication provider. Drawing, saving and exporting need nothing further; generating images is granted per account while the Service is in beta. You are responsible for activity under your account and for keeping your sign-in credentials secure.
We may decline, suspend, or close an account that abuses the Service, infringes others’ rights, or is used to break the law. We may also block access to the parts of the Service that need no account - including the editor and the download - where that is necessary to protect the Service or comply with the law. Having no account does not put you outside these terms.
Image generation consumes credits, which exist to govern the cost of the third-party models the Service calls. Credits have no cash value, are not transferable, and are not refundable except where the law requires it. We may change how much a generation costs as underlying model prices change.
You keep ownership of the prompts you write and the artwork you create, edit, or import. We claim no ownership of it. You grant us only the permission technically necessary to run the Service for you - storing your files, processing them through the pipeline, and displaying them back to you. Where you use the Service without an account, we are granted nothing at all, because nothing reaches us.
Note that the legal status of AI-generated output differs between countries, and in some of them material generated without meaningful human authorship may not be copyrightable at all. We cannot advise you on this; if it matters to your project, get your own advice.
There is no public gallery in BitRaster, and nothing you save to your account is listed anywhere or visible to anyone by default. What exists instead are three ways of showing your work to particular people, all of them started by you and ended by you: a share link, which gives whoever has it a page showing one drawing; a watch link, which lets people you give it to see you draw; and a collaborative document, which lets people you invite draw with you. All three are described below.
None of them is something an administrator can start on your behalf. An administrator can revoke a link that is reported to us, and that is the only power over your sharing that anyone here has.
Do not use the Service to produce sexual content involving minors, to harass or impersonate, to infringe copyright or trademarks, to generate material that is illegal where you are, or to attack the Service’s infrastructure or circumvent its limits. Anything you show to other people - through a share link, a watch link, or in a collaborative document - must also be something you have the right to show. A drawing somebody has shared with you is theirs: copying it into your account does not make it yours to publish elsewhere.
The Service is offered as-is and may change, break, or become unavailable. We may modify or discontinue features. You may stop using the Service and request deletion of your account at any time. We will give reasonable notice of material changes to these terms where we can.
To the fullest extent the law allows, the Service is provided without warranties of any kind, and Build Tuit LLC is not liable for indirect or consequential losses, lost profits, or lost data. Nothing here limits liability that cannot lawfully be limited. These terms are governed by the laws of the State of Texas, United States, without prejudice to any mandatory consumer protections in your country or state of residence.