An animation, sent as a link.

Share an animation as a link, nothing uploaded: the project is locked inside the link itself, after the #, and opens in the Animation maker for whoever has it.

By Suraj Kumar6 November 20265 min read

To show someone an animation you are making, you usually upload it somewhere first. KeepSimp has no server to upload to. Instead, Share a link puts the whole project inside the link itself, locked, so it goes only where you send the link.

Make the link.

Share a link is in the More menu of the editor, in 2D and in 3D. It packs the project as a saved project file holds it (its parts, timelines, state machines, scripts, pictures, sounds and models), locks it, and shows the link with its length in characters and a button to copy it.

Locked, after the #.

Each link is locked with a new key of its own (AES-GCM, 128 bits), and the key is written into the link beside the locked project, after the #. Browsers never send the part of an address after the # to any server: not to KeepSimp and not to anyone else. The animation exists only where the link is.

Because the key travels with it, anyone who has the link can open the animation. Send it only to people who should see it, as you would the file. The window says both.

Big pictures, sounds and models stay out.

When pictures, sounds and models would make the link longer than 200,000 characters, they are left out, and the window says how many. The parts that show a left-out picture or model open without it, and events play nothing in place of a left-out sound.

A project whose link would pass 2 MB even without them is not offered as a link: save it as a file instead. Some apps cut long links short, so if a link does not open, send the project file.

Opening a link.

A link opens the Animation maker, which unlocks the project on the device. Nothing opens by itself: the first screen says the link carries an animation, with its name, and Open the shared animation puts it in the editor. If another animation is open, it asks before putting the shared one in its place. Once read, the locked part is taken out of the address.

Before unpacking, it adds up what the project says it holds and refuses more than 100 MB. Then every part is checked as an opened project file is. A link that was cut short or changed says so, and nothing half-read is opened.

For people who only want to watch.

A link opens the project in the editor, ready to change. For someone who only needs to watch it, Export makes an MP4, a GIF or an animated WebP on your device, which plays anywhere.

A little less theory. A little more doing.

Try it on your own terms, with a free browser tool.

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