Colorize Text for Synesthesia Training

Paste any text and this tool colors every letter and digit, for synesthesia training. Pick your own colors, print the result, or download it as a self-contained HTML file. Everything happens in your browser: your text is never uploaded, and your colors are saved locally for next time.

To learn more, see our article on synesthesia and memory training. You can also train digits on their own with the synesthesia number generator.

To turn a downloaded file into an ebook for a Kindle or e-reader, open it with the free program Calibre and convert it to ePub or Kindle format.