Content and Data Utilities
A practical collection of markdown, HTML, JSON, CSV, and small browser utilities for content prep and structured data cleanup.
- Clean or convert markdown and HTML fragments
- Validate, format, and reshape JSON or CSV data
- Prepare README and table content for docs or launches
- Run quick utility checks without opening a desktop app
The small utilities that keep content pipelines moving
These jobs are rarely glamorous, but they block launches all the time: a broken markdown table, JSON that needs formatting, CSV that needs reshaping, or a README that needs assembly. This page gives those practical content and data tasks one home.
It is designed for people who need browser-first operations that are faster than bouncing through multiple editors and converters.
Markdown and README work
Markdown Editor
Write with live preview
Write Markdown with a live GFM preview, then copy or download the source locally.
Markdown Preview
Preview Markdown online
Preview Markdown online with GFM rendering and keep the source copy-ready.
Markdown to HTML
Convert Markdown to HTML
Convert Markdown into sanitized HTML with a rendered preview in the browser.
HTML to Markdown
Convert HTML to Markdown
Convert practical HTML snippets into Markdown locally and preview the result.
Markdown Table Generator
Generate Markdown tables
Generate Markdown tables from comma, pipe, or tab-separated rows with alignment controls.
README Builder
Assemble a practical README
Assemble a practical README from common project sections and export one clean README.md locally.
Markdown Cleaner
Clean Markdown spacing
Clean Markdown spacing, heading gaps, list spacing, fence spacing, and trailing whitespace locally.
Markdown Table Formatter
Align Markdown tables
Format existing Markdown tables into aligned output with a cleaner separator row.
Markdown Link Extractor
Extract Markdown links
Extract inline links, reference links, images, and autolinks from Markdown locally.
Markdown Diff Viewer
Compare Markdown source
Compare two Markdown sources and inspect the text diff locally without render noise.
Markdown Checklist Generator
Generate task lists
Turn plain lines into a Markdown task list with checked or unchecked defaults.
Markdown Word Counter
Count Markdown content
Count words, characters, headings, links, and list items in one Markdown block locally.
JSON and CSV utilities
JSON Validator
Validate JSON locally
Validate pasted JSON locally and keep a readable parsed result ready for export.
JSON Formatter
Format JSON cleanly
Pretty-print pasted JSON locally with stable indentation and export-ready output.
JSON Minifier
Minify JSON payloads
Minify pasted JSON safely and compare the before and after size locally.
JSON to CSV
Convert flat JSON to CSV
Convert flat JSON rows into CSV locally and reject nested structures with a clear message.
CSV to JSON
Convert CSV to JSON
Convert header-based CSV into flat JSON rows locally with a readable output.
CSV Viewer
Inspect CSV tables
Preview pasted CSV as a table locally and inspect row, column, and delimiter details.
CSV Column Extractor
Extract CSV columns
Select CSV headers, extract only the columns you need, and export filtered CSV or JSON locally.
Small supporting helpers
HTML Formatter
Beautify HTML markup
Beautify pasted HTML locally and export cleaner, easier-to-read markup.
HTML Minifier
Minify pasted HTML
Minify pasted HTML locally and compare the before/after payload size.
Strip HTML Tags
Remove HTML tags
Remove HTML tags and keep readable text from pasted markup locally.
HTML to Text
Convert HTML to text
Convert pasted HTML into more readable text while preserving practical structure.
Local File Hash Checker
Hash a file locally
Compute SHA-256, SHA-1, and MD5 for one local file in the browser and compare it with a known hash.
Keep the workflow moving with adjacent stacks.
These solution pages overlap with the same jobs, formats, or handoff steps.