Diff Checker
Compare two texts and highlight differences
Freetextdiffcompare
13 browser-based tools
Text tools for writing, cleanup, and Markdown
These text tools remove mechanical work from writing, editing, documentation, and data cleanup. Count words, normalize case, sort or deduplicate lines, run find-and-replace, build Markdown tables, or convert Markdown to HTML. Processing happens in the browser, which keeps unpublished drafts, customer lists, and internal notes out of a remote text-processing service.
Tool inputs stay on your device. Page-view analytics never include tool input.
Browse text tools
Featured starting points appear first, followed by the complete category in alphabetical order. Every card links to one canonical tool page with its own working interface, examples, limitations, sources, and related utilities.
Markdown Editor
Preview and edit Markdown with live rendering
Freetextmarkdowneditor
Case Converter
Convert text between uppercase, lowercase, title case, and more
Freetextcaseconverter
Find and Replace
Find and replace text with optional ECMAScript regex (including $1/$2 capture-group backreferences), case-insensitive, whole-word, and multiline modes. Live match count, recipe presets, in-place chain apply.
Freetextfind and replaceregex replace
Lorem Ipsum Generator
Generate placeholder text for designs and mockups
Freetextlorem ipsumplaceholder
Markdown Table Generator
Visual GFM Markdown table builder with paste-from-spreadsheet import, per-column alignment, and pipe-escape safety
Freetextmarkdowntable
Markdown TOC Generator
Extract a table of contents from any Markdown document with GitHub-, GitLab-, or Pandoc-style heading anchors. Configurable depth, duplicate-slug handling, ordered or unordered list, base-level normalization.
Freetextmarkdown toctable of contents
Reading Time Calculator
Estimate reading and speaking time for any text at an adjustable words-per-minute. Counts words and characters instantly in your browser.
Freetexttextreading-time
Remove Duplicate Lines
Remove duplicate lines from any list, keeping the first occurrence. Case-insensitive and trim options, plus optional alphabetical sort.
Freetexttextduplicates
Remove Line Breaks
Remove line breaks from text instantly — replace with spaces, strip entirely, or keep paragraphs. Handles Windows, Mac, and Unix line endings.
Freetexttextline-breaks
Text Sorter
Sort lines alphabetically, numerically, by length, in reverse, or randomly shuffle. Optional case-insensitive, deduplication, whitespace trimming. Crypto-strength Fisher-Yates shuffle.
Freetexttext sortersort lines
URL Slug Generator
Turn any title into a clean, lowercase, diacritic-free, RFC 3986-safe URL slug with separator, case, and stop-word controls
Freetextslugurl
Word Counter
Count words, characters, and reading time for any text
Freetextwordscharacters
What can you do with these tools?
This category groups tools by the job they complete, not by a search-keyword variation. Choose the smallest utility that matches the input and output you need.
- Count words, characters, sentences, tokens, and reading time.
- Normalize case, sort lines, remove duplicates, and replace repeated text.
- Write Markdown, generate tables or a table of contents, and convert to HTML.
- Create clean URL slugs and placeholder copy for layouts.
Guides for this tool category
These guides explain the standards, formulas, and failure cases behind the working tools. Use them when the conversion result needs more context than a one-line output.
Web Development
Markdown Syntax Guide: From Basics to Tables and TOCs
Learn Markdown syntax from the portable CommonMark core to GFM tables, task lists, and strikethrough, including blank-line rules that prevent rendering bugs.
Read guideContent Creation
Text Processing Tools for Content Creators: A Practical Workflow
Use browser-based text tools to draft, count, clean, structure, and publish content. This practical workflow covers privacy, limits, and useful SEO checks.
Read guideDesign
px vs em vs rem in CSS: Which Unit to Use and When
px is an absolute pixel, em is relative to the element's own font-size, rem is relative to the root. Default to rem for accessibility — here is why and when.
Read guideFrequently asked questions
Does Toolk store text pasted into a writing tool?
No. Text transformations run in the browser. Toolk does not send drafts, lists, Markdown, or replacement text to its servers as part of using these tools.
Which tools help clean a large list?
Use Remove Duplicate Lines to deduplicate, Text Sorter to order entries, Remove Line Breaks to flatten text, and Find and Replace for exact or regular-expression rewrites.
Do the Markdown tools support GitHub-style syntax?
The Markdown pages state their supported syntax and anchor rules. Use the Markdown Editor for live preview, the table generator for GFM tables, and the TOC generator for GitHub-style heading links.
Last updated: . Category membership and tool counts come directly from the current Toolk catalogue.
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