Essential online developer toolbox for JSON, encoding, network diagnostics, code, PDF, image, and data workflows
Format, minify and validate JSON
Convert text case in batch
Test regular expressions with instant matches
Count characters, words, lines and paragraphs
Generate placeholder text quickly
Encode and decode HTML entities
Clean extra spaces, blank lines, and line breaks in bulk
Convert text into URL-friendly slugs
Sort, deduplicate and reverse text lines
Compare differences between two texts
Compare two texts line by line
Remove duplicate lines from text
Extract links from pasted text in bulk
Estimate reading and speaking time from text length
Replace text in bulk with keywords or regular expressions
Prepare MP3 audio cutting tasks online
Prepare video trimming tasks online
Prepare audio format conversion tasks online
Prepare video format conversion tasks online
Prepare multiple audio files for joining online
Prepare multiple video files for merging online
Prepare video files for audio extraction online
Prepare audio cutting tasks online
Merge multiple PDF files into one
Split PDF files by page ranges
Reduce PDF file size
Convert PDF pages to JPG/PNG images
Convert images to a PDF document
Convert JPG images to a PDF document
Convert PNG images to a PDF document
Convert PDF pages to JPG images
Convert PDF pages to PNG images
Add page numbers to PDF files
Add text or image watermark to PDF
Rotate PDF page orientation
Remove PDF password protection
Add password protection to PDF
Convert PDF to Word document
Export PDF table data to Excel
Convert PDF to HTML webpage
Convert Word documents to PDF
Convert Excel spreadsheets to PDF
Convert PowerPoint presentations to PDF
Generate MD5/SHA hashes
Encode and decode Base64 text
Decode JWT header and payload
Encode and decode URL components
Generate UUID v4 in batches
Generate secure random passwords
Lookup A/AAAA/CNAME/MX/NS/TXT records
Inspect certificate subject, issuer and expiry
Run connectivity tests with ping
Look up IP geolocation and ISP info
Format JSON, HTML, CSS and JavaScript
Convert Unix timestamps and datetime
Convert CSV text into JSON array
Parse and build URL query strings
Convert JSON array into CSV text
Convert length, weight and temperature units
Convert between CSV and JSON formats
Convert between JSON and YAML formats
Calculate common percentage scenarios quickly
Generate random numbers within a range
Calculate BMI using height and weight
Convert between binary, octal, decimal and hex
Parse cron expressions to human-readable text
Evaluate JSONPath expressions on JSON data
Generate HTML meta tag code for SEO
Generate robots.txt content visually
Calculate age, total days, and next birthday from a birth date
Calculate monthly payments, total interest, and early amortization rows
Convert between Excel column numbers and labels
Convert octal and symbolic file permissions
Convert B, KB, MB, GB, TB, and PB units
Compress images directly in browser
Preview rendered Markdown in real time
Generate QR codes from text or links
Resize images by custom width and height
Convert images to Base64 Data URL
Generate linear-gradient CSS visually
Calculate and lock aspect ratios
Preview HTML rendering in real time
Generate CSS box-shadow visually
Search and copy popular emojis
Look up Unicode character code info
Generate placeholder images with Canvas
Generate color schemes from a base color
Check whether text and background colors meet WCAG contrast requirements
Convert HEX, RGB and HSL colors
Convert between XML and JSON data
Convert between TSV and JSON formats
Generate TypeScript types from JSON samples