Free online toolboxes

A Simple Toolbox for Developers, SEO, and Text Processing

ASCII Art Generator

Turn text or images into classic ASCII art. Easy, fast, and free.

Open
Base Converter

Convert numbers between binary, octal, decimal, hexadecimal, and other bases. Fast and accurate.

Open
Base64 Encoder & Decoder

Encode text to Base64, decode Base64 strings, and convert images to Base64 format. All-in-one tool.

Open
Blood Type Inheritance Calculator

Predict possible blood types of a child based on parents' ABO blood types. Simple and accurate.

Open
Case Converter

Convert text to uppercase, lowercase, title case, sentence case, and more. Quick and easy.

Open
Color Converter

Convert color codes between HEX, RGB, HSL, CMYK, and other formats. Quick and precise.

Open
Date Calculator

Calculate the difference between two dates, or add/subtract days to find a future or past date.

Open
Emoji Converter

Convert text to emoji, translate emoji to text, or get emoji Unicode codes. Simple and fun.

Open
Hash Generator

Generate MD5, SHA1, SHA256, SHA512, and SHA3 hashes from any text. Fast and secure.

Open
HTML Escape / Unescape

Convert HTML special characters to safe entities or decode them back. Quick and reliable.

Open
JavaScript Tools

Beautify, minify, encrypt, decrypt, validate, and escape JavaScript code. All-in-one toolkit.

Open
JSON Formatter & Converter

Format, minify, validate JSON, and convert to XML or CSV. All-in-one JSON tool.

Open
JWT Decoder

Decode JSON Web Tokens to view header, payload, and signature details. Simple and fast.

Open
Markdown Editor

Write and preview Markdown in real-time. Export to HTML. Simple and distraction-free.

Open
Meta Tag Generator

Generate and preview meta tags for SEO, Open Graph, and Twitter Cards. Optimize your website visibility.

Open
Morse Code Converter

Convert between text and Morse code. Simple, fast, and free.

Open
Percentage Calculator

Calculate percentages, percentage of a number, percent increase or decrease. Quick and accurate.

Open
QR Code & Barcode Generator

Create QR codes and various barcode formats (UPC, EAN, Code 128, etc.). Free and easy to use.

Open
Random Data Generator

Generate random names, emails, numbers, addresses, and more. Ideal for testing and mock data.

Open
Random String Generator

Generate custom length random strings, passwords, and tokens. Fully customizable.

Open
Regex Tester

Test and debug regular expressions in real-time. View matches and capture groups instantly.

Open
Text Diff Checker

Compare two texts side by side, highlight differences, and find changes instantly.

Open
Timestamp & Timezone Converter

Convert Unix timestamps to dates, dates to timestamps, and convert between timezones easily.

Open
Unit Converter

Convert between length, weight, temperature, speed, area, volume, and more. Quick and accurate.

Open
URL Parser & Encoder/Decoder

Parse URLs to view components, encode URLs for safe transmission, or decode encoded URLs.

Open
UUID Generator

Generate UUID v4 and v1 unique identifiers instantly. Perfect for databases, APIs, and unique keys.

Open
Workday Calculator

Calculate the exact number of business days between two dates. Exclude weekends and add custom holidays for project scheduling and payroll.

Open
Loan Payment Calculator

Calculate monthly loan payments, total interest, and total repayment using the equal principal and interest method. Ideal for mortgages and car loans.

Open
GPA Calculator

Compute your weighted GPA on a 4.0 scale. Add multiple courses with credits and letter grades for instant results.

Open
Age Calculator

Calculate your exact age in years, months, and days, plus total days lived and a countdown to your next birthday.

Open
Color Scheme Generator

Generate complementary, analogous, and monochromatic color palettes from any base color and export CSS custom property code.

Open
Font Preview Tool

Preview system fonts like Arial, Microsoft YaHei, and PingFang SC in real-time. Customize text and size, then copy the CSS code.

Open
Countdown Timer

Set a target date and watch the real-time countdown in days, hours, minutes, and seconds. Share your timer with a custom link.

Open
Image Compressor

Compress JPG, PNG, and WebP images in your browser. Adjust quality, preview before and after, and download — no upload required.

Open
Image Format Converter

Convert images between PNG, JPEG, WebP, and BMP formats instantly. Handles transparent backgrounds. No server upload needed.

Open
Image Crop & Resize

Crop images with free-form or fixed aspect ratios (1:1, 4:3, 16:9) and resize to custom dimensions. Runs entirely in your browser.

Open
PDF Merger

Combine multiple PDF files into one document in the correct order. All processing is done locally — files are never uploaded to a server.

Open
PDF to Image

Convert PDF pages to PNG or JPEG images. Export a single page or batch-export all pages as a ZIP file. No upload required.

Open
Video Info Extractor

Instantly extract video metadata: duration, resolution, estimated bitrate, file size, and format. Powered by the HTML5 Video API — runs locally.

Open
IP Lookup

Look up any IP address to find its country, city, coordinates, timezone, and ISP. Auto-detects your own public IP on load.

Open
Token Calculator

Count tokens and visualize tokenization using GPT-4 / GPT-3.5 cl100k_base rules. Each token is color-coded for easy analysis.

Open
Mind Map Maker

Type an indented outline and instantly generate a visual mind map. Export as SVG or PNG. No upload, no account required.

Open
Gantt Chart Maker

Enter tasks with start and end dates to generate an interactive project timeline. Export as PNG. Powered by Apache ECharts.

Open
HTTP Header Checker

Inspect HTTP response headers for any URL — server type, content-type, security headers, cache-control, and more. Server-side proxy included.

Open
WHOIS Lookup

Check domain registration info — registrar, creation date, expiry date, name servers, and status — using the modern RDAP protocol.

Open
Chart Generator

Create bar, line, pie, and scatter charts from your data. Powered by Apache ECharts. Export as PNG. No data uploaded.

Open
DNS Lookup

Query A, AAAA, MX, TXT, CNAME, NS and SOA records for any domain using Cloudflare DNS-over-HTTPS. Free, instant, and privacy-friendly.

Open
Cron Expression Parser

Parse and explain cron expressions in plain English. View the next 5 scheduled run times. Supports all standard cron special characters.

Open
JSON ↔ CSV Converter

Convert JSON arrays to CSV and CSV back to JSON instantly. RFC 4180 compliant quoting. No server upload — all processing runs in your browser.

Open
CSS Gradient Generator

Visually design linear, radial, and conic CSS gradients with a live preview. Add unlimited color stops, adjust angle and positions, then copy the ready-to-use CSS property.

Open
BMI Calculator

Calculate your Body Mass Index for metric (kg/cm) or imperial (lb/ft) units. Instantly see your BMI value, category, and position on a color-coded health scale.

Open
Daily Horoscope

Get your personalized daily horoscope for all 12 zodiac signs. Updated every day.

Open
Tarot Card Reading

Draw a tarot card and get an instant reading. 78 major and minor arcana cards.

Open
Chinese Zodiac

Find your Chinese zodiac animal by birth year and discover your personality traits.

Open
Numerology Calculator

Calculate your life path number from your name or birthday and unlock its meaning.

Open
Dream Interpreter

Enter a dream keyword and explore its symbolic meaning from various traditions.

Open
BaZi Calculator

Generate your Chinese BaZi (Four Pillars of Destiny) chart from your birth date and time.

Open
Chinese Name Generator

Generate authentic Chinese names for any gender, with meaning and pronunciation.

Open
Baby Name Scorer

Score a Chinese baby name using stroke numerology (Wu Ge analysis).

Open
Brand Name Generator

Generate creative brand and company name ideas from keywords.

Open
MBTI Personality Test

Take a quick 16-question MBTI test and discover your personality type.

Open
Enneagram Test

Find your Enneagram type with a fast and accurate personality questionnaire.

Open
Color Personality Test

Discover whether you are a Red, Yellow, Blue or Green personality type.

Open
Decision Maker

Can't decide? Enter your options and let the wheel pick one for you.

Open
Love Tester

Enter two names and find out your love compatibility score — just for fun!

Open
Random Quote Generator

Get inspired with a random motivational quote in English or Chinese.

Open
Face Score Simulator

Upload a photo and get a fun AI-style attractiveness score.

Open
This Day in History

Discover important historical events that happened on this day throughout history.

Open