Text
Text utilities for counting, case conversion, find-and-replace, whitespace cleanup, and line-level processing across writing, development, logs, SEO copy, and bulk content work.
9 tools
Text
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Text Counter
Count characters, words, sentences, paragraphs, lines, UTF-8 bytes, and reading time for content limits, API fields, and multilingual copy checks.
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Case Converter
Convert headings, identifiers, slugs, and config keys between UPPER, lower, Capitalized, inverse, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, and path/case.
Open tool -
Text Replace
Find and replace text with plain matching, case-sensitive matching, global replacement, and regex replacement for copy, config snippets, and logs.
Open tool -
Text Cleaner
Clean extra blank lines, repeated blank lines, leading and trailing whitespace, and trailing spaces from pasted text, logs, and drafts.
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Text Compare
Compare two plain-text blocks, highlight added, removed, and edited lines, and call out word-level changes inside the line.
Open tool -
Line Tools
Process multiline text with line deduplication, sorting, numbering, prefix/suffix insertion, filtering, joining, splitting, and per-line regex replacement.
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Regex Tester
Test JavaScript regular expressions live with match highlighting, capture groups, replacement preview, split output, ReDoS detection, and multi-language code export.
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Markdown Editor
A Typora-style WYSIWYG Markdown editor with inline formatting, KaTeX math, tables, task lists, and fourteen switchable themes, all running locally in the browser.
Open tool -
Invisible Character Viewer
Reveal invisible characters in any text — spaces, tabs, line breaks, zero-width characters, the BOM, and Unicode control codes — named, counted, and color-coded, with one-click removal of the suspicious ones.
Open tool
About this category
Plain text is still the universal interchange format for code, configs, content, logs, and copy. Small text tasks — counting characters before posting, switching casing to match a style guide, replacing a stale URL across a list, stripping invisible whitespace from a paste — interrupt focused work every day.
DevKitLab gathers these everyday text utilities into a single place. Each tool runs in your browser, accepts a paste or a typed input, and gives you a copyable result with the option you actually need (regex flags, line operations, character classes) rather than burying it behind a paywall.
What you can do here
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Counts that match real platforms
Characters, words, sentences, lines, UTF-8 bytes, and reading time with sane handling of CJK characters, emoji clusters, and surrogate pairs.
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Casing across all naming conventions
camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, and path/case for identifiers, slugs, headings, and config keys.
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Find, replace, and clean at scale
Plain, case-sensitive, and regex replacement across paragraphs; whitespace and blank-line cleanup before publishing or importing.
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Line-level operations for lists
Sort, dedupe, number, filter, join, split, and per-line regex for URL lists, SQL values, log lines, and bulk content edits.