All Tools
Every Tool King tool, in one place.
Markdown Tools5 tools
Markdown to Word
Convert Markdown to a formatted Word (DOCX) document — headings, bold, lists, code and tables included.
Markdown to PDF
Convert Markdown to a clean, print-ready PDF document.
Markdown to HTML
Convert Markdown to clean, sanitized HTML — download the file or copy formatted rich text to paste elsewhere.
Word to Markdown
Convert a Word (DOCX) document to clean Markdown.
PDF to Markdown
Convert a PDF document to Markdown, with headings detected automatically.
PDF Tools5 tools
PDF to Word
Convert PDF files to editable Word documents.
PDF to Excel
Extract tables and data from PDF into Excel spreadsheets.
Merge PDF
Combine multiple PDF files into a single document.
Split PDF
Split a PDF into separate pages or page ranges.
Compress PDF
Reduce the file size of your PDF documents.
Image Tools5 tools
Image Compressor
Compress JPG, PNG and WebP images without losing quality.
Image Resizer
Resize images to the exact dimensions you need.
JPG to PNG
Convert JPG images to PNG format.
PNG to WebP
Convert PNG images to the modern WebP format.
WebP to JPG
Convert WebP images to the widely supported JPG format.
Developer Tools23 tools
JSON Formatter
Format and beautify your JSON data instantly.
JSON Validator
Validate your JSON and find syntax errors.
JSON Viewer
Explore JSON data as a collapsible tree.
JSON to CSV
Convert a JSON array of objects into a CSV file.
JSON to YAML
Convert JSON data into YAML format.
Base64 Encoder/Decoder
Encode or decode text and files using Base64.
URL Encode
Percent-encode text for safe use in a URL.
URL Decode
Decode a percent-encoded URL back to readable text.
HTML Encode
Convert special characters into HTML entities.
HTML Decode
Convert HTML entities back to readable characters.
JWT Decoder
Decode and inspect JSON Web Tokens.
Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Cron Expression Generator
Build a cron expression with a plain-English description.
Regex Tester
Test a regular expression against sample text with matches highlighted.
Regex Generator
Pick a common regex pattern and test it against your own text.
Color Picker & Converter
Pick a color and convert between HEX, RGB and HSL.
HTML Formatter
Format and indent messy HTML markup.
CSS Formatter
Format and indent messy CSS.
JavaScript Formatter
Format and indent messy or minified JavaScript.
SQL Formatter
Format and indent messy SQL queries.
XML Formatter
Format and indent messy XML documents.
YAML Formatter
Format and normalize the indentation of a YAML document.
Markdown Formatter
Normalize spacing and formatting in a Markdown document.
SEO Tools5 tools
Meta Tag Generator
Generate title, description, Open Graph and Twitter meta tags.
Robots.txt Generator
Generate a robots.txt file to control search engine crawling.
Sitemap Generator
Generate an XML sitemap from a list of URLs.
Schema Markup Generator
Generate JSON-LD structured data for Organization, Article, FAQ, Product and more.
.htaccess Generator
Generate a .htaccess file for HTTPS redirects, caching and more.
Text & Writing Tools9 tools
Word Counter
Count words, characters, sentences, paragraphs and estimated reading time.
Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case and more.
Remove Duplicate Lines
Remove duplicate lines from a list while keeping the original order.
Remove Extra Spaces
Clean up extra spaces, tabs and blank lines from text.
Text Sorter
Sort lines of text alphabetically, ascending or descending.
Text Repeater
Repeat a word, phrase or block of text a set number of times.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text by words, sentences or paragraphs.
Markdown Editor
Write Markdown with a live preview, side by side.
HTML to Markdown
Convert HTML markup to clean, GitHub-flavored Markdown.
Security Tools19 tools
Password Generator
Generate strong, random passwords.
UUID Generator
Generate random UUID v4 identifiers.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
QR Code Generator
Turn any text, URL or contact info into a scannable QR code.
QR Code Scanner
Upload a QR code image and instantly decode its contents.
Barcode Generator
Generate CODE128, EAN-13 and other common barcode formats.
URL Shortener
Turn a long link into a short, shareable URL.
IP Lookup
Find the location, ISP and network details behind any IP address.
DNS Lookup
Query A, AAAA, MX, TXT, NS and CNAME records for any domain.
HTTP Header Checker
Inspect the response status, redirect chain and headers for any URL.
SSL Checker
Check an SSL certificate's validity, issuer and expiry date.
WHOIS Lookup
Look up domain registration details: registrar, dates and nameservers.
Domain Age Checker
Find out exactly how old a domain is, based on its registration date.
Port Checker
Check whether a specific TCP port is open on a host.
User Agent Parser
Break down any User-Agent string into browser, OS and device details.
DNS Propagation Checker
Check a DNS record across multiple global resolvers to see if it has propagated.
Password Strength Checker
Check how strong a password is and get tips to make it stronger.
URL Scanner
Inspect a URL for redirects, HTTPS and other technical safety signals.
Email Header Analyzer
Trace an email's delivery path and check its SPF/DKIM/DMARC results.
Business Tools12 tools
Invoice Generator
Create a professional invoice with line items, tax and totals.
Quote Generator
Create a professional price quote or estimate for a client.
Profit Calculator
Calculate gross profit, net profit and profit margin from revenue and costs.
Markup Calculator
Calculate selling price and profit from cost and markup percentage.
Margin Calculator
Calculate profit margin and markup from cost and selling price.
VAT Calculator
Add or remove VAT from a price at any tax rate.
Payroll Calculator
Calculate gross pay, tax withheld and net pay from hours and rate.
Break-even Calculator
Find the number of units and revenue needed to break even.
ROI Calculator
Calculate return on investment, net profit and annualized ROI.
Discount Calculator
Calculate the final price and amount saved after a discount.
Commission Calculator
Calculate commission earned from sales amount and commission rate.
Time Tracking Calculator
Add work sessions and calculate total hours worked and pay.
Travel Tools10 tools
Trip Budget Calculator
Estimate your total trip cost from hotel, food and transport.
Travel Cost Calculator
Break down every travel expense category for one or more travelers.
Currency Converter
Convert between currencies using live exchange rates.
Packing List Generator
Generate a checklist tailored to your trip type and length.
Time Zone Converter
Convert a time between two time zones or cities.
Jet Lag Calculator
Estimate how many time zones you are crossing and recovery time.
Distance Calculator
Calculate the straight-line distance between two coordinates.
Flight Time Calculator
Calculate arrival local time from departure time and flight duration.
Visa Checker
Get a travel document checklist and official sources to verify visa needs.
Itinerary Planner
Plan a day-by-day travel itinerary with times and activities.