Kit happens when you need it.
Free PDF, image, and developer kits. No signup. Your files never leave your browser.
Most tools process data locally in your browser. When server processing is required, files are deleted after 1 hour.
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Kits
JSON Formatter
Beautify and validate JSON data with syntax highlighting
JSON to TypeScript
Generate TypeScript interfaces from JSON data
Base64 Encoder
Encode text and files to Base64 format
JWT Decoder
Decode and inspect JWT tokens
Word Counter
Count words, characters, sentences with reading time
Case Converter
Convert between camelCase, snake_case, PascalCase and more
URL Shortener
Shorten URLs using free API
Color Converter
Convert between HEX, RGB, HSL color formats
Gradient Generator
Create CSS gradients visually with live preview
PX to REM
Convert between PX and REM units
CSS Grid Generator
Visually build CSS Grid layouts
SHA-256 Generator
Generate SHA-256 hash from text or files
Password Generator
Generate strong, random passwords
UUID Generator
Generate v4 and v7 UUIDs
HTTP Status Codes
Complete HTTP status code reference
SSL Certificate Checker
Check SSL certificate details and expiry
QR Code Generator
Generate QR codes for URLs, text, vCards
Base64 Image
Convert images to/from Base64 strings
Image Crop & Resize
Crop and resize images with aspect ratio lock
Image Upscaler
Upscale and enhance image resolution
Image OCR
Extract text from images using OCR
Merge PDF
Combine multiple PDF files into one
Split PDF
Extract pages from a PDF file
Remove Pages
Remove specific pages from a PDF
PDF to Word
Extract text content from PDF files
PDF to JPG
Convert PDF pages to JPEG images
PDF Editor
Add text to PDF pages
Sign PDF
Draw and add signature to PDF
PDF to Markdown
Convert PDF to clean Markdown with tables
AI Text Detector
Detect if text was written by AI or a human
LLM Token Counter
Count tokens for GPT, Claude, Gemini models with cost estimates
Regex Tester
Test and debug regular expressions
SQL Formatter
Format and beautify SQL queries
Number Base Converter
Convert between binary, octal, decimal, hex
Subnet Calculator
Calculate subnet masks, CIDR, and IP ranges
Video to GIF
Convert video clips to animated GIF
Video to MP3
Extract audio from video files
HEIC to JPG
Convert HEIC images to JPG format
MP3 to WAV
Convert MP3 audio to WAV format
Number Base Converter
Convert numbers between binary, octal, decimal, and hex
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
World Clock
View current time in cities around the world
Unit Converter
Convert between metric and imperial units
Percentage Calculator
Calculate percentages, increases, and decreases
Currency Converter
Convert between world currencies in real-time
Tip Calculator
Calculate tips and split bills
Credit Card Payoff
Calculate payoff time and total interest for credit card debt
Retirement Calculator
Plan your retirement savings and income
WCAG Contrast Checker
Check color contrast ratios for WCAG accessibility compliance
Color Blindness Simulator
Preview how colors appear to color-blind users
Color Palette Generator
Generate harmonious color palettes from a base color
Tailwind Colors
Browse and copy Tailwind CSS color values
Flexbox Generator
Visually build CSS Flexbox layouts
Pomodoro Timer
Productivity timer with work and break intervals
Tabata Timer
HIIT interval timer with work/rest cycles
Invoice Generator
Create and download professional invoices as PDF
Fake Data Generator
Generate test names, emails, addresses, phone numbers