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brainai.storeDataPeek
Private spreadsheet profiler

Your data never leaves your browser.

Drop a CSV or Excel file and DataPeek instantly profiles every column — types, null rates, distributions, outliers — and hands you a cleaned export. The HR and finance numbers you would never paste into a chatbot stay on your machine.

Computed on-device● No upload, ever● Real math, not a guess

Drop your CSV or Excel file

Parsed straight into memory — no server, no account.

CSV, TSV, .xlsx, .xls · profiled instantly in your tab

Open your spreadsheet
Drag in a CSV or .xlsx. PapaParse and SheetJS read it directly in the tab — not a single byte is sent anywhere.
Real stats, every column
Type inference, null %, unique counts, min/max/mean/median/σ and a live histogram — computed over your actual rows, in pure JavaScript.
Export a tidy report
De-duplicate rows, trim whitespace, and download the cleaned CSV — or export the full profile as JSON or Markdown. Built and downloaded in your browser.