ToolWrite with live preview
Markdown Editor
Write Markdown with a live GFM preview, then copy or download the source locally.
Category
Developer Tools
A working set of browser-first developer utilities: test regular expressions and XPath, beautify or minify code, decode JWTs, build cron expressions, generate hashes and UUIDs, and produce mock data, all locally with nothing uploaded.
Catalog
Browse Developer Tools
Regex, JSON, code beautifiers, hashing, JWT, cron, mock data, and everyday developer utilities.
HTMLUtilityTop pick
Embed Code Cleaner
Clean embed snippets
Clean pasted iframe and widget snippets locally without executing the embed.
HTMLUtilityTop pick
Extract Links From HTML
Extract HTML links
Extract anchors, image URLs, and media URLs from pasted HTML locally.
HTMLUtilityTop pick
HTML Formatter
Beautify HTML markup
Beautify pasted HTML locally and export cleaner, easier-to-read markup.
HTMLUtilityTop pick
HTML Minifier
Minify pasted HTML
Minify pasted HTML locally and compare the before/after payload size.
MarkdownUtilityTop pick
HTML to Markdown
Convert HTML to Markdown
Convert practical HTML snippets into Markdown locally and preview the result.
HTMLUtilityTop pick
HTML to Text
Convert HTML to text
Convert pasted HTML into more readable text while preserving practical structure.
HTMLUtilityTop pick
HTML Validator
Check practical HTML issues
Run a practical HTML checker on pasted markup and surface common SEO/content issues locally.
MarkdownUtilityTop pick
Markdown Checklist Generator
Generate task lists
Turn plain lines into a Markdown task list with checked or unchecked defaults.
MarkdownUtilityTop pick
Markdown Cleaner
Clean Markdown spacing
Clean Markdown spacing, heading gaps, list spacing, fence spacing, and trailing whitespace locally.
MarkdownUtilityTop pick
Markdown Diff Viewer
Compare Markdown source
Compare two Markdown sources and inspect the text diff locally without render noise.
MarkdownUtilityTop pick
Markdown Editor
Write with live preview
Write Markdown with a live GFM preview, then copy or download the source locally.
MarkdownUtilityTop pick
Markdown Link Extractor
Extract Markdown links
Extract inline links, reference links, images, and autolinks from Markdown locally.
MarkdownUtilityTop pick
Markdown Preview
Preview Markdown online
Preview Markdown online with GFM rendering and keep the source copy-ready.
MarkdownUtilityTop pick
Markdown Table Formatter
Align Markdown tables
Format existing Markdown tables into aligned output with a cleaner separator row.
MarkdownUtilityTop pick
Markdown Table Generator
Generate Markdown tables
Generate Markdown tables from comma, pipe, or tab-separated rows with alignment controls.
MarkdownUtilityTop pick
Markdown to HTML
Convert Markdown to HTML
Convert Markdown into sanitized HTML with a rendered preview in the browser.
MarkdownUtilityTop pick
Markdown Word Counter
Count Markdown content
Count words, characters, headings, links, and list items in one Markdown block locally.
MarkdownUtilityTop pick
README Builder
Assemble a practical README
Assemble a practical README from common project sections and export one clean README.md locally.
DataUtilityTop pick
Regex Tester Lite
Test JS regex locally
Test one JavaScript regex pattern against pasted text and inspect matches and groups locally.
HTMLUtilityTop pick
Strip HTML Tags
Remove HTML tags
Remove HTML tags and keep readable text from pasted markup locally.
DeveloperUtility
Cron Expression Builder
Developer
Build a cron expression from fields and presets, or paste one to read a plain-English explanation. Free, in your browser, nothing is uploaded.
CSSUtility
CSS Beautifier
Beautify CSS
Format minified or messy CSS into clean, indented rules. Free, in your browser, nothing is uploaded.
CSSUtility
CSS Minifier
Minify CSS
Compress CSS by removing comments and unnecessary whitespace. Free, in your browser, nothing is uploaded.
HTMLUtility
HTML Beautifier
Beautify HTML
Reformat messy or minified HTML with clean, nested indentation. Free, in your browser, nothing is uploaded.
Top picks
Start with the strongest entry points in this category
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