Classify spreadsheet rows with Jev, and know which answers to trust
Enrich a spreadsheet of reviews, support tickets or leads using Jev and Handsontable DataGrid, and get a confidence score on every answer.
Notes from the lab
A vacuum never stays empty for long. We said good riddance to a CMS and built our own tools instead.
We rebuilt handsontable.com on Astro and Cloudflare with no CMS: what we skipped, what we built instead, and two internal tools that came out of it.
Handsontable's AI tools: a Docs MCP server, Claude Code skills, Ask AI, Theme Builder Assistant, and a demo playground
A public Docs MCP server, Claude Code skills, Ask AI in the docs, an AI tab in the Theme Builder and a coding assistant in the demo runner: who each is for.
Grok is obsessed with our docs. Just not the parts we built for it.
A browser fleet from an xAI netblock crawled our docs overnight and found the AI chat. Why the rate limiter never fired, and why we deflected, not blocked.
Shadow DOM support for web components and Salesforce LWC
As of Handsontable 18.1.1 the core handles the shadow boundary itself — mouse, focus and clipboard events resolve through shadow roots, with no wrapper.
One million rows later: how Handsontable fixed its performance
A benchmark said we ran out of memory at 500,000 rows. Three weeks and 31 pull requests later, one million rows render with the lowest heap in the test.
How We Replaced StackBlitz and CodeSandbox With Our Own Demo Runner
Why we built demos.handsontable.com, how a two-tier runtime works behind a single adapter, and everything that broke along the way.
Handsontable 18.1.0: Shadow DOM Support for Salesforce and Web Components, a Faster Grid, and a New Demo Playground
Shadow DOM support including Salesforce Lightning, up to 10x less memory on large data sets, new selection gestures, and a playground for every docs example.
HyperFormula 3.4.0: Official Coding Agent Skill, Agent-Ready Docs, and Five New Functions
HyperFormula 3.4.0 ships an official coding-agent skill, agent-ready docs and five new functions: XIRR, SORT, UNIQUE, VSTACK and HSTACK.
Handsontable 18.0.0: A TypeScript Core, a New Layout System, and a Faster, Lighter Grid
Handsontable 18.0.0 moves the core to TypeScript, rewrites the rendering engine for lower memory use, drops four dependencies and adds a layout system.
Make every data point count. Turn millions of them into actionable wisdom.
Let’s make it easier.
Smoother. Faster. All Handsontable.