Unlimited data grids, 250+ page PDF processing, and 3D graph sandboxes — all running in your browser. No servers. No subscriptions. No limits.
Every tool purpose-built for performance and privacy. No cloud, no compromise.
A 100,000+ row virtualized spreadsheet powered by TanStack Table and HyperFormula. Real formulas. Real performance. No DOM lag.
Convert PDF→DOCX or DOC/DOCX→PDF entirely in your browser. Chunk-based Web Worker keeps your UI at 60fps even on 250+ page files.
Select a cell range and instantly visualize it as a Bar, Line, or Scatter chart inside a detachable, 3D-rotatable spatial window.
All processing happens in your browser. No file is ever uploaded to a server. Your data never leaves your machine.
The file converter works beautifully on phones and tablets. Drop a file, pick a format, and download — all from your mobile browser.
Window virtualization, lazy loading, and a Three.js Aether background that reacts to your cursor — all at 60 frames per second.
PDF to DOCX · DOC to PDF · All in your browser. No server. No signup. Works on every device including mobile.
Client-side architecture explained.
No installation. No login. Navigate to /app and your workspace loads from local storage instantly.
Drop a PDF file, paste your data into the grid, or start from a blank 100×26 sheet with formula support.
For PDFs with 250+ pages, a Web Worker takes over in a background thread. Your UI stays responsive — you see a live progress bar.
The processed DOCX or chart renders instantly. Click download — the file is assembled in your browser and saved locally.
Shrink images (JPEG/PNG/WebP) with a quality slider, or reduce PDF file size — entirely in your browser.
Upload up to 25 images, reorder them by drag or arrows, and generate a professional A4 PDF — all client-side.