Developer Tools

Format, validate, and minify JSON data with syntax highlighting

Decode and verify JSON Web Tokens with header and payload inspection

Preview Markdown README and download as .md, .html, .pdf, or .docx

Generate JSON Web Tokens with custom claims and signature

Generate strong, secure passwords with customizable options

Test and debug regular expressions with real-time matching

Parse and validate cron expressions with next run times

Generate UUIDs (v1, v4) with bulk generation support

Convert between Unix timestamps and human-readable dates

Encode and decode Base64 strings with UTF-8 support

Encode and decode URLs with special character handling

Minify HTML code by removing whitespace and comments

Verify JWT signatures with secret key validation

Test IMAP, SMTP, and POP3 server configurations to verify connection settings

Check WCAG color contrast ratios for accessibility

Generate placeholder text with customizable length

Generate QR codes for text, URLs, and more

Generate SHA256, MD5, and other cryptographic hashes

Compare two texts and highlight differences

Validate HTML for email compatibility

View HTTP request and response headers

Parse and analyze user agent strings

Convert between CSV and JSON formats

Convert images between different formats (PNG, JPEG, WebP, etc.)

Compress images to reduce file size while maintaining quality

Resize images with precise dimensions, scaling, and aspect ratios

Crop images with visual selection and aspect ratio controls

Convert multiple images into a single PDF document

Extract pages from PDF files as individual images

Combine multiple PDF files into a single document

Extract specific pages or split PDF into multiple documents

Rearrange pages in your PDF document

Remove password protection from PDF files

Add password protection and permissions to PDF files

Process multiple images at once with batch operations

View and remove EXIF data and metadata from images

Generate favicons in multiple sizes and formats from images

Combine multiple images into sprite sheets for web development

Generate comprehensive color palettes with framework code outputs

Edit images with crop, rotate, draw, and filter tools

Compare two images and highlight visual differences

Enhance image sharpness and clarity with advanced algorithms

Add text or image watermarks to protect your images

Remove backgrounds from images automatically

Change image DPI/PPI for print and web optimization

Convert domain names to IP addresses using DNS A and AAAA record lookups

Find domain names associated with IP addresses using reverse DNS PTR record lookups

View Microsoft Access databases (MDB/ACCDB) in-browser with table preview and CSV export.