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Have a look at the free GeoIP Database included in many Linux distributions: apt info geoip-database # or geoip-bin Description: IP lookup command line tools that use the GeoIP library (country data …

What about FlowChart-Vue? Demo - interactive github - code npm - for Installation Or D2Lang - a diagram scripting language that turns text to diagrams.

You could do this with the "Solver" feature in Excel, or Libreoffice. With the Solver you can set objective functions and constraints and find solutions. Interactivity could be achieved by putting s …

Try Google Chrome in "headless" mode , save page to PDF... and look at the generated/embedded images. outfile="myfile.pdf" google-chrome --headless --print-to-pdf https://mypage.io mv output.pdf $out …

I would ask this question on SO within the context of the jq command line tool. Just tag your question with jq. There are some jq experts on SO who can transform anything from any structure to any str …

Install a user script manager, e.g. the Greasemonkey or Tampermonkey plugins, and check out their script-repositories such as Greasyfork.org. For example, I use the "all [Heise forum] comments on one …

You could try visjs. I like it because R has a nice package for visjs binding, but visjs' maintenance status is unclear to me. More requirements please: should it be interactive, mutable with the mo …

chart.js renders onto the Browser's Canvas API, whereas highcharts.js and d3.js create SVG output (which is XML). All create great output. Choosing the output format according to your needs and prefer …

Use JS to write HTML Files, put these on a webserver that runs on localhost (or some webserver where you can upload files to). Call Google Chrome in headless mode to convert HTML to PDF: URL=https://l …

This works if the list of links on that "user-defined site" never changes : Do this once: create a new folder, or a subfolder, in your bookmark bar. Create a bookmark for each link on the page, and s …

You could use a static site generator such as Vuepress or Hugo. There are many others. The idea is the same: Editors write their content in Markdown (Or Roxygen, or Wikitext, or reStructuredText...). …

Modern Javascript, as implementeded in current Browsers, gives you many of jQuery's features in a similar, even better way, so you don't need jQuery as much as in previous years. … React is an option if you want to write mobile apps in Javascript (via React-native). Don't know much about Angular(s). …

An attractive option is to use Google firebase, a key-value datastore optimized for the lots of asynchronous calls typical for modern Javascript developement. …

A very popular tool for this is Webpack which in its newest release v4 has "tree-shaking" capabilities. It can remove unnecessary code. (and optionally minifies and reduces, creates sourcemaps and mor …

Newer versions of VS Code have a "Code Outline View". The function names in that panel (see lower left in screenshot) are clickable and will move to the function definition in the JS file.