Table Snap

Capture web table schemas, detect column anomalies, validate values, and export CSV/JSON reports locally.

Table Snap simplifies recurring table-to-report workflows without sending your sensitive data to third-party cloud servers. Select any rendered HTML or ARIA table, establish the expected column schema, catch layout drifts or broken data instantly, and export clean, audit-ready CSV reports. Key Features: Point & Click Table Picker: Effortlessly highlight and capture standard HTML <table> elements and modern ARIA role="grid" components across nested frames. Intelligently expands rowspan and colspan hierarchies into clean rectangular tables. Reusable Schema Studio: Define custom output column headers, reorder fields to match enterprise report templates, and configure source aliases to seamlessly adapt to renamed website headers. Instant Drift & Anomaly Detection: Automatically flags missing columns, unexpected new columns, or header duplicates whenever a target webpage updates its layout. Comprehensive Data Validation: In-browser type-checking for Text, Integer, Decimals (with flexible US . and EU/VN , thousand separators), ISO/localized Dates, and relative/absolute URLs. Safe CSV Generation: Strictly preserves leading zeros (e.g., postal codes, tax IDs 000184) and neutralizes potential spreadsheet formula injection vulnerabilities (=, +, -, @). Zero-Cloud Local Privacy: Operates entirely within your local browser runtime. Zero telemetry, zero external network requests, zero authentication required. Scope & Boundaries: Designed for rendered tables currently visible on your screen (bounded to 5,000 rows and 100 columns per capture). Does not run background crawlers, bypass CAPTCHA/paywalls, or perform automated pagination.