Slack canvas exporter
Get those Slack canvases off of Slack and onto our hard drives!
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Timeline
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Following the news of the imminent destruction of HC Slack, I decided to explore ways to export Slack canvases, as they often contain a wealth of useful information.
I discovered it's pretty easy to build a URL that lets you download a HTML representation of the canvas, so I created a web service that automatically converts canvas URLs into viewable HTML files. The styling currently leaves much to be desired, but I can work on that!
I also made a CLI tool to download the HTML to your filesystem, which is important for archival.
I plan to extend the CLI system to download a batch of canvases (defined in YAML) and save them all to a local folder, so that they can be shared and accessed without a dependency on Slack.
