Tools that actually help adjiebrotot (me) in everyday life to make intelligent, well-calculated decisions (and help with the work too). Shared to the world for you to use it as well, because why not.
Showing 5 tools.
Read Markdown and export a high-quality, print-ready PDF.
Drop in a Markdown file, read it full-screen with LaTeX math, code highlighting, Mermaid diagrams, and an auto table of contents, then export a clean, paginated PDF that keeps headings with their content and repeats table headers across pages. Edit the Markdown directly with the built-in editor. Everything runs locally, with no upload and no account.
DIgSILENT PowerFactory automation script creator for multiple use cases.
DIgSILENT PowerFactory Python API has already made our work as power system engineers faster by automating repetitive tasks in a single run. However, writing the script itself can still be time-consuming. I’ve realised that most PowerFactory workflows are essentially just input–study–output. Let’s make that process faster as well!
Compare Indonesian personal income tax under separate filing (Pisah Harta) vs joint filing (Gabung Harta).
Deciding whether to file personal income tax separately (Pisah Harta) or jointly (Gabung Harta) should not be based on love. It’s mathematical. You’re better off spending your money on another romantic dinner than on extra tax.
Compare paying in full versus financing and investing unused cash at the risk-free rate.
I’m a believer in the saying: “The lower class uses debt, the middle class avoids debt, and the upper class uses debt.” However, there’s a big difference in how the lower and upper classes use debt. Use this tool to take on debt that actually benefits you. It won’t make you rich, but it might help ensure you don’t make banks even richer.
Model the long-term financial outcome of renting vs buying property, comparing cash, equity, and net wealth over time.
Is buying property always beneficial? Well, no. It’s a long-term financial decision that requires proper analysis. Sometimes renting wins; sometimes buying does. How do you know which one works for you? Use this tool.
Compare Dollar Cost Averaging strategies across multiple securities with real market data or custom models.
Sometimes people are afraid of investing in equities due to their perceived “volatility”. With this tool, I aim to show that volatility under dollar-cost averaging means very little. Even over the medium term, you can still expect better outcomes compared with investing in risk-free assets. Live data fetched from Yahoo Finance can be used to improve accuracy.
Upload your data and instantly create interactive charts and graphs.
Numbers in a spreadsheet tell you very little until you can actually see them. Upload a CSV or Excel file, pick your columns, choose a chart type, and turn your data into interactive visualisations instantly, with no coding, no third-party accounts, and no fuss.
Build polished Sankey flow diagrams quickly with live editing and export options.
Budget breakdowns, energy flows, and supply chains are best understood as a Sankey diagram when something moves from A to B. Build yours here without any special software: define your flows in the editor or upload a CSV, fine-tune the layout, and export as SVG or PNG.
Upload or link any JSON file and explore it as an interactive, lazily-loaded tree.
Raw JSON is unreadable at scale. Upload a file or paste a URL, and this tool renders the structure as a collapsible tree. Lazy loading handles files with thousands of nested items without freezing the browser. Expand nodes one at a time, paginate large arrays, and export the visible tree as PNG or SVG.
Build visual strategy frameworks: Business Model Canvas, Value Proposition Canvas, etc in your browser.
Business model frameworks are designed to be filled in visually, not buried in a spreadsheet. Whether you're mapping out a Business Model Canvas or a Value Proposition Canvas, having it all on one visual canvas helps you see the whole picture at once. Build yours here, add your content, and export a clean result for presentations or workshops.
Compare cost of living across cities to find out where your salary actually goes furthest.
A higher salary in a new city doesn't always mean more money in your pocket. Before relocating, the real question is: how far does your income actually go there? This tool compares cost of living across cities so you can make a genuinely informed decision about where to live and work.
Convert any video clip to an animated GIF, entirely in your browser, with no upload required.
Want a GIF from your screen recording or video clip, but don't want to install software or hand your file to a random online converter? This tool converts video to animated GIF entirely in your browser, with no upload, no account, and no privacy risk.
Compare Australian superannuation salary sacrifice to assess whether it’s worthwhile when DASP applies.
If you are a temporary resident of Australia (or intend to stay temporarily), your superannuation will be subject to the Departing Australia Superannuation Payment (DASP). While concessional contributions can reduce tax now, they may be taxed more heavily under DASP later. Does increasing your super balance still make sense? Use this tool.