🛝Toolio
About Contact

🔡 Text Case & Cleanup Tools

A free, fully in-browser text transformer that converts case, trims whitespace, sorts lines, and removes duplicates — no file upload, no account, and works offline.

Transform Actions
Text

Private by design. This tool runs entirely in your browser — nothing you enter is uploaded or stored, and it works offline.

About

Toolio's Text Case & Cleanup tool covers the most common text-wrangling tasks in a single click: UPPERCASE, lowercase, Title Case, Sentence case, trim leading/trailing spaces, strip blank lines, sort lines A–Z or Z–A, remove duplicate lines, and add line numbers. Everything runs locally inside your browser using plain JavaScript — your text never leaves your device, making it safe for sensitive documents and usable even without an internet connection.

How to use

  1. Paste or type your text into the input area.
  2. Click any transform button — UPPERCASE, lowercase, Title Case, Sentence case, Trim Spaces, Trim Line Ends, Remove Blank Lines, Sort Lines, Remove Duplicates, or Number Lines.
  3. The result appears instantly in the same text area — apply multiple transforms in sequence as needed.
  4. Click Copy to copy the result to your clipboard, or Download to save it as a .txt file.

FAQ

Is this tool free?
Yes, completely free with no usage limits, no account required, and nothing to install.
Does my text get uploaded to a server?
No. All transformations run entirely in your browser using JavaScript. Your text never leaves your device, so it is safe for confidential or sensitive content.
Does it work offline?
Yes. Once the page is loaded, all features work without an internet connection. The site also supports installation as a PWA for offline-first use.
What is the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every word (e.g. "Hello World"). Sentence case capitalizes only the first letter of each sentence (e.g. "Hello world. Next sentence.").
Can I remove duplicate lines from a list?
Yes. Paste your list, click "Remove Duplicates", and any repeated lines are removed while preserving the original order of first occurrences.
Which operations are available?
Ten in total: uppercase, lowercase, Title Case and Sentence case for casing; trim spaces, trim lines and remove blank lines for cleanup; sort ascending and descending; and number the lines. They can be applied one after another, so a list pasted out of a PDF is usually two or three clicks from being usable.
Why does Title Case leave some words lowercase?
Because that is what the convention asks for. Short joining words - articles, conjunctions and short prepositions - stay lowercase unless they begin the title. Capitalising every word regardless is a different style, common in headings but not in standard title case.