TextArray от Apptiary

TextArray brings 300+ free text tools to your browser — and every one of them
runs locally.

Select any text, right-click, and choose a tool: count words, change case,
encode/decode Base64 or URLs, clean and format text, sort or de-duplicate
lines, slugify, format JSON, apply ciphers, and much more. Or type "ta" in the
address bar to jump straight to a tool.

Why TextArray is different:
• 100% local — the extension never sends your text anywhere. It opens the tool
on textarray.com with your selection in the URL fragment, which the browser
never transmits to a server. The tool then runs entirely in the page.
• No ads, no accounts, no tracking, no cookie banner.
• 300+ tools across case, encoding, cleaning, formatting, lists, numbers,
ciphers and generators.
• 18 languages and a ⌘K command palette on the site.

The only permission it uses is the right-click (context menu) entry. It requests
no host permissions and collects no data.