Open tools, one at a time.
Now running yutils, trading, trends — more taking shape.
jdgrid is a growing collection of browser-first tools for developers — each focused on a single job and shipped as its own site. Everything runs client-side, needs no account, and comes with its own documentation.
No login walls, no paywalls, no dark patterns — open the link and the tool just works. The projects below are live today, with more taking shape.
Projects
76 browser-based dev tools and 118 guides — JSON formatting, JWT decoding, regex testing, Kubernetes YAML, and much more. No install, no sign-up; everything runs in your browser. Available in Korean and English.
yutils.jdgrid.com →Compare live prices and rankings across crypto, US stocks, and Korean stocks, then backtest your own strategies on daily candles — returns, max drawdown, and Sharpe, right in the browser.
trading.jdgrid.com →Search, news, Wikipedia, shopping, and culture trends from Korea and around the world, gathered on a single page — see what's surfacing today across sources from Hacker News to music charts.
trends.jdgrid.com →A new tool taking shape — details to come.