A native Mac editor for text, CSVs, and data files
Free browser-based tool to extract HEX, RGB, and HSL color codes from any image pixel
Stage
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Founded
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Based in
US
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Pricing model
Freemium
Free
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.
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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
Click or tap any pixel to read its exact color code
Get HEX, RGB, HSL, CMYK, and OKLCH values with one-click copy
Extract dominant colors from an image as a palette
No server upload – image processing happens entirely in your browser
Match colors to traditional Chinese and Japanese color names
Save color history in your browser on this device
Works on mobile with touch and on-screen keyboard
Export palettes as CSS variables, Tailwind, or JSON
Support for JPG, PNG, and WebP image formats with drag-and-drop upload
Use arrow keys to nudge the cursor and fine-tune pixel selection
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
Entirely browser-based with no sign-up required
Links picked colors to centuries-old traditional Chinese and Japanese palettes
Displays multiple color formats (HEX, RGB, HSL, CMYK, OKLCH) for every pixel
Image never leaves your browser – all processing is client-side
Supports palette export in multiple formats for developers and designers
Caxton
Image Color Picker