Text Cleaner & Case Converter
Clean messy text and convert between case formats — remove extra spaces, fix line endings, deduplicate lines, sort, and switch between camelCase, snake_case, and more.
Paste any text and clean it up instantly — collapse spaces, fix capitalisation, sort lines, remove duplicates, and convert between ten case formats. Transforms chain together, so you can apply several in sequence. Everything runs locally; nothing leaves your browser.
Text cleaner & case converter
Paste your text on the left, apply transforms, and copy or download the result on the right.
About this tool
What is a text cleaner?
A text cleaner is a tool that normalises, repairs, and reformats raw text without requiring you to write code or open a spreadsheet. Whether you are pasting content from a PDF, a Word document, a CMS export, or a web scrape, the result usually contains hidden problems: double spaces, mixed line endings, inconsistent capitalisation, duplicate lines, or encoding artefacts. A text cleaner lets you fix all of those in seconds.
Common text problems this tool solves
- Extra whitespace — multiple consecutive spaces left by copy-pasting from PDFs or formatted documents collapse to a single space per line.
- Inconsistent capitalisation — apply UPPERCASE, lowercase, Title Case, Sentence case, or developer-friendly formats like camelCase and snake_case with one click.
- Mixed line endings — Windows (CRLF), Unix (LF), and old Mac (CR) endings coexist in text pasted from different sources. Normalize to LF for consistent processing.
- Duplicate lines — deduplicate a list of emails, domain names, keywords, or CSV rows without writing a script.
- Blank line clutter — remove all empty lines, or collapse runs of three or more blank lines down to a single separator.
- Unsorted lists — sort lines A to Z or Z to A for quick alphabetical ordering of any line-separated list.
How case conversion works
The case converter supports ten formats covering everyday writing and developer naming conventions:
- UPPERCASE / lowercase
- Simple full-caps or all-lowercase conversion, letter by letter.
- Title Case
- Capitalises the first letter of every word, useful for headings and article titles.
- Sentence case
- Capitalises only the first letter of each sentence while lowercasing the rest — ideal for correcting auto-caps.
- iNVERSE
- Flips every letter: uppercase becomes lowercase and vice versa. A classic novelty that is also handy for quickly testing case-sensitive systems.
- camelCase
- Joins words without separators, lowercasing the first word and capitalising each subsequent one. The standard for JavaScript variables and JSON keys.
- PascalCase
- Like camelCase but the very first letter is also capitalised. Used for class names, React components, and TypeScript types.
- snake_case
- Joins words with underscores, all lowercase. Common in Python, SQL column names, and many file naming conventions.
- kebab-case
- Joins words with hyphens, all lowercase. The standard for CSS class names, URL slugs, and HTML attributes.
Chaining transforms
Every transform you apply acts on the current output. If you click Remove extra spaces and then Sentence case, the second transform operates on the already-cleaned text — not the original. This chainable model lets you build a multi-step cleaning pipeline without writing any code.
To restart with the original text, click Reset output. To pipe the cleaned result back into the input field for further editing, click Use as input.
Privacy and security
Every transform runs entirely in your browser using JavaScript. Your text is never sent to a server, never stored in a database, and never logged. You can use this tool safely with confidential content — internal documents, customer data, or draft copy — without any privacy risk.
Frequently asked questions
Does this work with non-English text?
Yes. Case conversion uses JavaScript's built-in Unicode handling, so accented Latin characters (é, ñ, ü) and many other scripts work correctly. The camelCase / PascalCase / snake_case / kebab-case converters also preserve Arabic characters (Unicode range U+0600–U+06FF) as single word units rather than splitting them.
Will sorting handle numbers correctly?
The sort uses a locale-aware comparison (localeCompare with sensitivity: 'base') which sorts alphabetically, not numerically. Lines starting with '10' will appear before '2' in A→Z order. For numeric sorting, preprocess your list to zero-pad numbers.
What counts as a 'word' in the stats bar?
Words are counted by splitting on whitespace (spaces, tabs, newlines) and filtering out empty tokens. This matches the most common definition used by word processors.
Can I clean a very long document?
Yes. All processing is synchronous JavaScript in your browser, so performance depends on your device. Documents up to several hundred thousand characters typically process in under a millisecond. Very large pastes (multi-megabyte) may take longer.
Is there a keyboard shortcut to copy the output?
Not currently, but you can click the Copy button and the keyboard shortcut Ctrl+A, Ctrl+C in the output textarea works as expected.