Spreadsheet Power,
Excel-Compatible
The spreadsheet engine built for your tech stack.

Launch faster. Ship more. Skip the grid rewrites.

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Benefits

What Makes
SheetXL Different

We are more than a spreadsheet or grid — we're a complete ecosystem, built for speed, scripting, and Excel compatibility. Here's what sets us apart.

Excel Compatible

Use your existing spreadsheets
— they just work.

400+ functions, seamless imports, copy-paste support, and 375+ shortcuts & UI gestures.

Instant Integration

SheetXL.attachStudio('#sheetxl')
— and you're live.

Bring spreadsheet features to your app in 1 line of code.

Unmatched Performance

Autofill 1,048,576 rows Excel's row limitwith formulas in 0.7s
— even on a 4-year-old phone.

Optimized for speed with columnar storage, vector ops, and in-browser execution.

Effortless Customization

Realtime scripting

Add custom functions directly inside your spreadsheet. No build steps or reloads.

Secure & Self-Contained

Data never leaves your device.

Runs 100% client-side. No external calls, no server processing, no surprises.

MIT Licensed & Open Source

Fork it, extend it, or use it as-is. No vendor lock-in.

Open-source UIs, import/export tools, and built-in formula functions — all yours to extend.

THE PROBLEM

Why I Built SheetXL

For years, I kept ending up in the same frustrating role:
full-time data-grid maintainer.
I was stuck in the Data Grid Trap.

Data-grid components

A Rigid Column List
– embed easily, but aren’t real spreadsheets.

Spreadsheet apps

A Walled Garden
– true spreadsheet power, but unable to integrate.

My teams needed to solve business problems, yet we spent our time on endless rewrites of spreadsheet features.

Data Grid Trap Illustration

...so I built SheetXL — to give you both power and embeddability.

SheetXL

Excel-class UX
Embeddable
Developer API

Data grid

Excel-class UX⚠︎
Embeddable
Developer API⚠︎

Spreadsheet App

Excel-class UX
Embeddable
Developer API
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Get Started

Take the Next Step

Whether you’re ready to build, want to connect with our community, or simply support the project, here’s where to start:

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