A native Mac editor for text, CSVs, and data files
HTML design in. Editable InDesign out.
Stage
Not given
Startup
Founded
Not given
2026
Based in
US
ZA
Pricing model
Freemium
Paid
Pricing
Caxton Free (free forever); Caxton Pro monthly at $9.99 USD, annual at $99.99 USD, or lifetime at $179.99 USD. Team pricing starts at $79 to $99.99 USD per seat per year.
Free preview: two most detailed pages of any design, twice, no account needed. $49 lifetime license: unlimited full conversions, activate on up to 10 browsers or devices, works in browser and from AI agents over MCP.
Key features
Text editing with memory-mapped files for large documents
CSV and TSV table editing with column transforms
Column transformations and data type preservation
CSV validation with structural and data rules
File comparison without copying data
Extract matches and columns to new documents
Local processing with no cloud uploads or telemetry
Converts HTML to native .idml files that open in Adobe InDesign
Real text frames with reflowable content
Named paragraph and character styles automatically created
Charts and tables as editable vector objects
Images placed and linked in a Links folder
Free preview of two most detailed pages without account
MCP server integration with Claude, Cursor, and other AI agents
14-day fix-or-refund guarantee on licensed conversions
Supports output in Affinity Publisher as well as InDesign
Works with all CSS frameworks including Tailwind and Bootstrap
What makes it different
Opens files directly from disk without importing or uploading, preserving data exactly as stored
Combines text editor, CSV table editor, and log viewer in one native Mac application
Handles multi-gigabyte files with consistent performance and one-millisecond keystroke latency
Preserves leading zeros, long IDs, and data types exactly as stored in the file
All files stay local to your Mac with no cloud processing, telemetry, or vendor lock-in
Deterministic conversion engine—no machine learning, same input always produces same output
Files deleted immediately after conversion—complete privacy, no storage or training
Native InDesign files, not PDFs—fully editable text, styles and charts
Direct integration with AI design tools through MCP protocol
Caxton
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