Privacy-First
Toolkits

Beautify and minify JSON data

Encode or decode text/files to Base64

Generate UUID v4 and v5

Generate strong random passwords

Generate customizable QR codes from text or URLs

Convert code snippets to beautiful PNG images with syntax highlighting

Convert Unix timestamps to readable dates

Convert between Hex, RGB, and HSL

Convert JSON to YAML and YAML to JSON

Decode and display JWT token contents

Test regular expressions against text

Encode and decode URL characters

Calculate MD5 and SHA-256 hash values

Convert Markdown text to HTML and preview

Generate Entity-Relationship diagrams from SQL DDL statements

Convert between camelCase, snake_case, PascalCase, etc.

Convert CSV text to JSON array

Format and display XML structure

Format messy SQL queries

All-in-one text utilities: diff, count words, characters, sentences

Generate TOTP/HOTP codes from a Secret Key entirely in the browser

Generate favicon icons in multiple sizes from images or text

Create beautiful CSS gradients with live preview and code export

Generate CSS box-shadow styles with visual preview

Compress and optimize PNG/JPG images in your browser

Generate harmonious color palettes with various color schemes

Create custom border-radius shapes with visual preview

Generate frosted glass effects with CSS backdrop-filter

Resize images to exact dimensions or percentages

Crop images with custom aspect ratios and dimensions

Apply and combine CSS filters like blur, brightness, contrast

Optimize and minify SVG files to reduce file size

Create CSS text-shadow effects with live preview

Generate harmonious typography scales with modular scale ratios

Create consistent spacing scales for design systems (4px, 8px base)

Check WCAG color contrast ratios for accessibility compliance

Visualize and test responsive breakpoints for different devices

Generate CSS Grid and Flexbox layouts with visual editor

Export design tokens to CSS variables, SCSS, JSON, or Tailwind config

Calculate optimal sizes for buttons, inputs, and UI components

Create device mockups for presentations and portfolios

Simulate how designs appear to users with color vision deficiencies

Manage and export brand color palettes with naming conventions

Create and download professional invoices as PDF

Generate professional receipts for payments and transactions

Create professional quotations and estimates for clients

Calculate profit margins, markup, and gross profit

Calculate VAT/Sales Tax amounts and prices with tax

Calculate net salary from gross with tax and deductions

Calculate break-even point for business profitability

Test REST APIs with GET, POST, PUT, DELETE requests and view responses

Interactive GraphQL query editor with syntax highlighting

Format and beautify JSON/XML API responses for better readability

Test webhooks and inspect incoming HTTP requests in real-time

Inspect and analyze HTTP request/response headers

Generate API documentation from endpoint definitions

Generate random numbers with customizable ranges and options

Calculate Body Mass Index with health category indication

Calculate percentages, percentage increase/decrease, and more

Convert between length, weight, temperature, and volume units

Calculate age from birth date with days, months, and years

Convert between 15 major currencies with real-time exchange rates

Calculate date differences, add/subtract days, and find business days

Calculate discounts, sale prices, and savings amounts

Calculate tips and split bills among multiple people

Calculate monthly loan payments, total interest, and amortization

Calculate investment growth with compound interest over time

Convert time between different world time zones

Convert between Arabic numbers and Roman numerals

Convert between Binary, Octal, Decimal, and Hexadecimal

Calculate daily caloric needs (BMR/TDEE) based on activity level

Calculate Grade Point Average with weighted and unweighted options

Calculate trip fuel expenses based on distance and fuel efficiency

Calculate sales tax, VAT, and total amounts

Calculate home mortgage payments with amortization schedule

Convert between mph, km/h, knots, and meters per second

Convert between Bytes, KB, MB, GB, TB, and larger units

Convert SVG code to React Native SVG components

Convert SVG code to React JSX components

Convert HTML markup to React JSX syntax

Generate TypeScript interfaces from JSON data

Generate Zod validation schemas from JSON

Convert JSON to Go struct definitions

Generate GraphQL schemas from JSON data

Generate TypeScript types from GraphQL schema

Convert CSS styles to Tailwind utility classes

Convert CSS to JavaScript style objects

Generate Zod validation schemas from TypeScript types

Remove TypeScript type annotations and convert to plain JavaScript

Generate TypeScript types from JSON Schema

Convert JSON arrays to CSV format with headers

Convert SQL queries to MongoDB query syntax

Convert Markdown text to downloadable PDF document

Convert YAML configuration to .env file format

Generate Postman collection from OpenAPI/Swagger specs

Generate TypeScript API client from Swagger/OpenAPI spec

Optimize JSON for LLM token efficiency - reduce tokens by 30-60%

Compress YAML for efficient LLM input - minimize token usage

Reduce XML verbosity for LLM processing - compact format

Optimize CSV data for LLM consumption - efficient tabular format

Count tokens for GPT-3.5, GPT-4, Claude, and other LLM models

Calculate remaining context space for different LLMs

Split large text into token-based chunks for LLM processing

Analyze markdown files for token count and structure optimization

Calculate when a cron expression will run

Query the meaning of HTTP status codes

Generate placeholder Lorem Ipsum text for designs and mockups

Browser-based stopwatch and countdown timer

Count words, characters, sentences, and paragraphs in text

Convert text between uppercase, lowercase, title case, and sentence case

Remove duplicate lines from text while preserving order

Sort text lines alphabetically or numerically

Reverse text, flip words, or reverse entire sentences

Find and replace text in bulk with multiple options

Generate random names for people, businesses, or projects

Roll multiple dice with custom sides and view statistics

Virtual coin flip with heads/tails statistics

Generate random colors in Hex, RGB, and HSL formats

Generate placeholder image URLs with custom dimensions

Clean up extra spaces, tabs, and newlines from text

Analyze character distribution and frequency in text

Minify JavaScript and CSS code

Test CORS headers for a given URL

Convert plain text to Markdown format

Generate .gitignore files based on project type

Convert project .env files to secure JSON/YAML format

Create fake API endpoints with JSON responses for testing

Convert cURL commands to Python, Node.js Fetch code

Convert raw SQL queries to popular ORM formats

Create data structure diagrams from JSON or SQL schema

Test HTTP protocol and security headers of a URL

Analyze SSL certificate and security headers like HSTS

Generate and validate CSRF tokens for security testing

Lint and validate K8s manifest (YAML) files

Simple browser-based notepad with auto-save to local storage

Focus timer using the Pomodoro Technique with work/break intervals

Track daily expenses with categories and monthly summaries

Calculate days until birthdays and special dates

Convert multiple images to a single PDF document

Merge, split, and manipulate PDF files in your browser

Extract text from images and screenshots using OCR