About Afterboard

Who makes it

Afterboard is made by ALGD LTD, a company registered in Northern Ireland (NI744090). Email hello@afterboard.app. It is not affiliated with, endorsed by or connected to Adobe.

How it reads XD files

An .xd file is a ZIP package of JSON: a manifest, one “graphics tree” per artboard, shared resources (components, gradients, colour and character styles) and the embedded pictures. Adobe hasn’t published the format. Afterboard’s reader and renderer were written for it from the structure of openly licensed sample files, with the open-source xd2svg (MIT, Andrey Chalkin) and xdtools (MIT, Umar Ahmed) projects read for reference; no code was copied from them. The file is unpacked with your browser’s own ZIP decompression in a background worker, and each artboard is drawn as SVG.

It was tested against openly licensed designs from GitHub: the XD to Flutter plugin’s test suite (BSD-2-Clause), xd2svg’s test files (MIT), AkyuiUnity’s samples (MIT), awesome-flutter-ui (MIT), Bootstrap grid templates (MIT), Covid19Radar (MPL-2.0), Dezenix website screens (CC0) and LogoS (CC0), comparing each render with the preview XD saved inside the file. Design files are endlessly varied, so if something looks wrong, XD itself is the reference; the page lists what it drew approximately for each file.

Licences

• Fonts used to draw designs whose fonts aren’t installed: inter 5.3.0, roboto 5.3.0, montserrat 5.3.0, open-sans 5.3.0, noto-sans 5.3.0, arimo 5.3.0, source-sans-3 5.3.1, raleway 5.3.0, nunito 5.3.0, playfair-display 5.3.0, poppins 5.3.0, lato 5.3.0, tinos 5.3.0, from Fontsource, under the SIL Open Font License 1.1 (Arimo and Tinos under the Apache License 2.0 or OFL as published), self-hosted.
• Site fonts: Space Grotesk, Inter and JetBrains Mono, under the SIL Open Font License 1.1.
• The ZIP reader and writer, file-name rules and failure counter are shared with Mailunwrap, by the same company.

The full licence texts are in licences.txt.