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markdownload
A Firefox and Google Chrome extension to clip websites and download them into a readable markdown file.
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obsidian-excel-to-markdown-table
An Obsidian plugin to paste data from Microsoft Excel, Google Sheets, Apple Numbers and LibreOffice Calc as Markdown tables in Obsidian editor.
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
The extension is available for Firefox, Google Chrome, Microsoft Edge and Safari according to the author's MarkDownload github. And I actually used it to generate the Markdown for those links :-)
I don't know how well it works, but there is a plugin for that: obsidian://show-plugin?id=obsidian-excel-to-markdown-table or https://github.com/ganesshkumar/obsidian-excel-to-markdown-table