Insights on privacy-first data analysis, local-first tools, and working with sensitive data.
A step-by-step guide to analyzing CSV, Excel, and SQL data entirely in your browser — without uploading files to any cloud service. Uses DuckDB WebAssembly and local AI.
Read moreA practical guide to GDPR-compliant data analysis tools. What the GDPR requires, which AI tools meet those requirements, and how browser-based analytics can simplify compliance.
Read moreA comparison of privacy-first data analytics tools in 2026 — from browser-based SQL engines to local AI. Which tools actually keep your data on your device, and which just promise they will?
Read moreCloud AI tools require uploading your data. Local AI tools don't. Here's why data analysts working with sensitive datasets should switch to local-first AI analytics.
Read moreQueryVeil now works completely offline. DuckDB WASM handles SQL, WebLLM runs AI in your browser via WebGPU, and a PWA service worker caches everything. Here's the architecture.
Read moreThe founder story behind QueryVeil: why I built a privacy-first AI data analyst using DuckDB WebAssembly and schema-only prompts, and what the architecture actually looks like.
Read moreQueryVeil now remembers what you've analyzed across conversations. Schema context, common query patterns, and insights persist — so the AI gets smarter the more you use it.
Read moreFive concrete methods to analyze Excel files locally, from Excel itself to Python, DuckDB CLI, browser-based tools, and desktop BI. Pros, cons, and when to use each.
Read moreA step-by-step walkthrough of analyzing an e-commerce CSV dataset: load, auto-profile, ask questions in plain English, drill down, and extract actionable insights. With real SQL queries and results.
Read moreA practical guide to using AI-powered data analysis tools with healthcare data. Covers HIPAA requirements, BAAs, PHI definitions, and how local-first architecture changes the compliance calculus.
Read moreA deep technical dive into DuckDB-WASM: how WebAssembly works, why DuckDB compiles well to it, performance characteristics, memory management, file format support, and real-world API usage.
Read moreA step-by-step tutorial for querying CSV files with SQL directly in your browser using DuckDB WebAssembly. No installs, no uploads, no Python required.
Read moreAn evaluation framework for security and compliance teams assessing AI-powered data analysis tools. Covers data residency, model access, retention, audit trails, and a comparison matrix.
Read moreWe trace what happens to your file when you upload it to ChatGPT, Julius AI, Google Sheets, and others. Network requests, server storage, model training implications — and how to verify it yourself.
Read moreRun full SQL analytics on CSV, Excel, and Parquet files entirely in your browser using DuckDB WebAssembly. No server uploads, no Python environment, no data leaving your machine.
Read moreWhen you upload a CSV to ChatGPT, where does your data go? We compare the privacy models of ChatGPT Advanced Data Analysis, Jupyter, and browser-based tools like QueryVeil.
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