Starlight Tools – Text Utilities Suite

TXT, CSV and anything you paste into the editors.

Text & CSV Tools

Count words, characters, numbers and more. v1.0

Convert text to UPPER, lower, Sentence, Capitalised or aLtErNaTiNg case. v1.0

Sort lines of text alphabetically or numerically. v1.0

Strip or reduce extra line breaks and spaces. v1.0

Remove identical lines with ignore-case / whitespace options. v1.0

Compare two pieces of text and highlight the differences. v1.0

Upload, filter and sort CSV data on the fly. v1.0

Compute Flesch-Kincaid and other readability metrics. v1.0

Analyse keyword and phrase frequency for SEO. v1.0

Find and replace text instantly and privately in your browser. v1.0

Transform your text into unsettling, glitched Zalgo text. v1.0

Do my text files ever leave my device?

No. All processing happens locally in your browser – nothing is uploaded.

Is there a file-size limit?

Only what your computer can comfortably handle in the browser. Large CSVs may take longer to load.

Which formats are supported?

TXT, CSV and anything you paste directly into the editor areas.