Developers spend a surprising amount of time on small text manipulation tasks — converting case, removing duplicates, sorting lines, comparing two versions of a config file. Most people reach for a code editor or write a quick script. But browser-based tools get you there in five seconds flat, with no setup and nothing to install.
Here are 10 text tools in the DevToolShack toolkit worth keeping in your browser bookmarks.
1. Word Counter
The Word Counter gives you a live count of words, characters, characters without spaces, sentences, and paragraphs as you type or paste. Useful beyond the obvious (blog posts, documentation) — it's handy for checking API response sizes, validating form field limits, or estimating read time. Paste in a chunk of text and the numbers update instantly.
2. Case Converter
The Case Converter transforms text between every common casing format in one click: UPPER CASE, lower case, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case. Invaluable when you're moving content between systems with different naming conventions, or when a client sends you copy in ALL CAPS.
3. Text Diff Checker
The Text Diff Checker shows exactly what changed between two blocks of text, line by line, with additions and deletions highlighted. Great for comparing config file versions, reviewing copy edits, or spotting the one character that's breaking a JSON payload. Paste both versions, see the diff instantly.
4. Duplicate Line Remover
The Duplicate Line Remover strips repeated lines from any text — keeping the first occurrence and removing all subsequent duplicates. If you've ever merged two lists, cleaned up a CSV, or deduplicated a set of log entries, you know exactly how useful this is. It handles thousands of lines instantly.
5. Sort Lines
The Sort Lines tool sorts any block of text alphabetically, in reverse, numerically, or randomly. Options include case-sensitive vs insensitive sorting and removing blank lines. Perfect for keeping config files tidy, sorting lists of domains, or ordering CSS properties alphabetically.
6. String Reverse
The String Reverse tool reverses text character by character or word by word. More useful than it sounds — handy for quick encoding checks, palindrome testing, or any time you need to flip a string for a specific algorithm or regex test.
7. Lorem Ipsum Generator
The Lorem Ipsum Generator produces placeholder text in configurable amounts — by word count, sentence count, or paragraph count. Outputs standard Lorem Ipsum or randomised variants. Essential for mocking up layouts when real content isn't ready yet.
8. Slug Generator
The Slug Generator converts any text into a URL-friendly slug — lowercased, spaces replaced with hyphens, special characters stripped. Type a blog post title and get a clean URL slug ready to paste into your CMS. Also useful for generating consistent database keys, file names, or route paths from user-provided strings.
9. Text Repeater
The Text Repeater repeats any text a specified number of times, with a configurable separator. Sounds trivial — until you need to generate test data, fill a field with repeated patterns, or produce a long string for stress-testing an input length limit. Saves writing a quick script every single time.
10. Word Frequency Counter
The Word Frequency Counter analyses text and shows how often each word appears, sorted by frequency. Great for spotting overused words in your writing, analysing keyword density in SEO content, or doing basic text analysis on any corpus without spinning up a Python environment.
These ten cover the text manipulation tasks that come up most often in day-to-day development. But DevToolShack has tools across 11 categories — from CSS generators to hash tools to date converters. If you find yourself writing a quick script to manipulate text or transform data, there's a good chance there's already a tool for it.