Extract 1.5M numbers per second • 100x faster than manual searching
JSON, YAML, CSV, TOML, INI, ENV
Before: Manually copying numbers from a 1,000-line JSON file (30 minutes)
{
"revenue": 1250000,
"profit": 340000,
"expenses": [125000, 89000, 56000]
// ... 200 more values buried in nested objects
}After: One command extracts all 203 numbers with stats in 0.2 seconds
Numbers: 203 total
Sum: 15,234,567
Average: 75,023
Min: 1,200 | Max: 1,250,000
Median: 45,000
Time Saved: 30 minutes → 1 second ⚡
- 1.5M numbers per second - 100x faster than manual searching
- Zero Config - Install → Press
Cmd+Alt+N→ Get stats instantly - Battle-Tested - 171 unit tests, 95% coverage, zero critical vulnerabilities
- Security-Hardened - 42 tests prevent CSV formula injection, DDE attacks, SQL/XSS vectors
Perfect for data validation, config audits, and financial analysis.
If Numbers-LE saves you time, a quick rating helps other developers discover it:
⭐ Open VSX • VS Code Marketplace
- Statistical analysis - Count, sum, average, min, max, median, mode, std dev
- Automatic cleanup - Sort, dedupe, and filter by ranges
- 6 file formats - JSON, YAML, CSV, TOML, INI, ENV
- Smart filtering - Excludes IDs, version numbers, non-data noise
- CSV streaming - Handle 500MB+ files without memory issues
- 13 languages - English, Chinese, German, Spanish, French, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Ukrainian, Vietnamese
- String-LE - Extract user-visible strings for i18n and validation • VS Code Marketplace
- EnvSync-LE - Keep .env files in sync with visual diffs • VS Code Marketplace
- Paths-LE - Extract file paths from imports and dependencies • VS Code Marketplace
- URLs-LE - Audit API endpoints and external resources • VS Code Marketplace
- Scrape-LE - Validate scraper targets before debugging • VS Code Marketplace
- Colors-LE - Extract and analyze colors from stylesheets • VS Code Marketplace
- Dates-LE - Extract temporal data from logs and APIs • VS Code Marketplace
- Financial Analysis - Extract revenue, profit, and growth metrics from JSON/CSV for quick validation
- Config Validation - Pull timeouts, limits, and thresholds from YAML/TOML/INI for auditing
- Performance Monitoring - Analyze CPU, memory, and response times from logs and metrics files
- Data QA - Get instant statistics (avg, median, outliers) on numeric datasets
- Install from Open VSX or VS Code Marketplace
- Open any supported file type (
Cmd/Ctrl + P→ search for "Numbers-LE") - Run Quick Extract (
Cmd+Alt+N/Ctrl+Alt+N/ Status Bar)
numbers-le.openResultsSideBySide– Open to the sidenumbers-le.csv.streamingEnabled– Toggle CSV streamingnumbers-le.dedupeEnabled– Auto-dedupe numbersnumbers-le.sortEnabled– Auto-sort outputnumbers-le.analysis.enabled– Enable statistical analysisnumbers-le.analysis.includeStats– Include detailed statistics- Safety Guards – File size warnings & thresholds
- Notification Levels – Control verbosity and alerts
Numbers-LE is built for speed and handles files from 100KB to 30MB+. See detailed benchmarks.
| Format | File Size | Throughput | Duration | Memory | Tested On |
|---|---|---|---|---|---|
| JSON | 0.13MB | 1218182 | ~1.1 | < 1MB | Apple Silicon |
| JSON | 1.31MB | 1593824 | ~8.42 | < 1MB | Apple Silicon |
| JSON | 6.55MB | 1356652 | ~49.46 | < 1MB | Apple Silicon |
| CSV | 0.5MB | 1232136 | ~15.87 | < 1MB | Apple Silicon |
| CSV | 3MB | 1548819 | ~75.77 | ~13MB | Apple Silicon |
| CSV | 10MB | 1204916 | ~324.64 | < 1MB | Apple Silicon |
| ENV | 5K lines | 1,561,687 | ~19.21 | < 1MB | Apple Silicon |
Real-World Performance: Tested with actual data up to 30MB (practical limit: 1MB warning, 10MB error threshold)
Performance Monitoring: Built-in real-time tracking with configurable thresholds
Full Metrics: docs/PERFORMANCE.md • Test Environment: macOS, Bun 1.2.22, Node 22.x
VS Code 1.70.0+ • Platform Windows, macOS, Linux
Memory 500MB recommended for large files
100% local processing. No data leaves your machine. Optional logging: numbers-le.telemetryEnabled
13 languages: English, German, Spanish, French, Indonesian, Italian, Japanese, Korean, Portuguese (Brazil), Russian, Ukrainian, Vietnamese, Chinese (Simplified)
Not detecting numbers?
Ensure file is saved with supported extension (.json, .yaml, .csv, .toml, .ini, .env)
Large files slow?
Enable CSV streaming: numbers-le.csv.streamingEnabled: true
Need help?
Check Issues or enable logging: numbers-le.telemetryEnabled: true
What numbers are extracted?
Integers, floats, percentages, currencies (excludes IDs, version numbers)
Can I get statistics?
Yes, enable numbers-le.analysis.enabled: true for avg, median, std dev, outliers
Max file size?
Up to 500MB with CSV streaming. Practical limit: 10MB for other formats
CSV streaming?
Enable numbers-le.csv.streamingEnabled: true to process large CSVs in chunks
171 unit tests • 95% function coverage, 80% line coverage
Powered by Vitest • Run with bun test --coverage
- 42 security tests for CSV/ENV/INI injection prevention
- Comprehensive coverage of JSON, YAML, CSV, TOML, INI, ENV formats
- Statistical analysis validation and edge case handling
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