| Key features | - Virtual scrolling: handles millions of rows with only visible rows in the DOM
- Web Worker offload for filtering and sorting above ~20,000 rows
- Columnar encoding with typed arrays for fast sorting and filtering
- Server-side data loading and filtering
- Sorting and filtering with custom comparators
- Inline editing with validation and lookups
- Multi-level grouping and master-detail views
- Excel and PDF export with styling
- Calculated columns with spreadsheet formulas
- Interactive charts and drill-down
| - JSON formatter, validator, and converter to YAML, CSV or TypeScript
- JWT decoder for inspecting token header, payload and expiry
- QR code and barcode generator with custom colors and download options
- Image compressor for batch processing to WebP, JPEG or PNG with quality slider
- curl converter between curl, fetch, axios, Python, Go, Node and PHP
- Hash generator supporting MD5, SHA-1, SHA-256, SHA-384, SHA-512
- Cron expression builder and parser with next run times
- JSON diff tool with structural comparison and collapsible tree
- SQL formatter and dialect converter for MySQL, PostgreSQL, SQLite and SQL Server
- Certificate decoder for PEM certificates, chains and CSRs with SANs and fingerprints
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| What makes it different | - Free Community edition with no expiry, watermark or license key for commercial use
- Paid versions never expire or lock users out; shipped applications keep running without watermarks
- No license server; keys checked locally via public key compiled into the package
- Handles millions of rows efficiently with only the visible window rendered
| - All tools run client-side in your browser with no data uploads to servers
- Fast static site served from global edge network with no sign-up required
- Clean interface available in 10 languages with dark mode and keyboard shortcuts
- Free to use forever with non-intrusive ads never accessing tool data
- Built as static Next.js export preventing server-side processing of sensitive data
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KanuniLabs