VisTool Toolbox

Curated online tools for development, formatting, images, documents, and everyday productivity.

All Tools

Browse the public tool catalog and open any tool page.

AI Text to Image

Turn a text prompt into a downloadable AI-generated image with controlled composition settings.

AI Image to Image

Generate one downloadable AI image from a reference image and a creative prompt.

AI Wedding Photo Style Creator

Create a wedding photo style image set from authorized portrait references and controlled creative settings.

AI Model Outfit Change

Create a natural single-person outfit-change image from authorized portrait and clothing references.

AI Ecommerce Product Design

Create a product visual design set from an authorized reference with controlled use and art direction.

AI Smart Watermark Removal

Select a watermark type and position to repair authorized images with AI.

AI Text to Image

Generate high-quality AI images from a text prompt.

AI Image Eraser

Automatically detect or manually select areas to erase and reconstruct with AI.

AI Image Colorizer

Automatically add natural color to black-and-white photos, grayscale images, and line art.

AI Old Photo Repair

Restore scratches, stains, noise, and fading while preserving authentic photo details.

AI Naming

Generate baby naming or adult renaming suggestions from birth details and preferences.

AI Salary Negotiation

Analyze market salary data and provide high-EQ negotiation strategies to handle HR lowballing.

AI Travel Planner

Enter destination, duration, and budget to get an AI-tailored daily travel itinerary, cost estimate, and travel tips.

AI Fortune Telling

Enter birth details for AI Bazi charting, Five Elements analysis, and fortune prediction.

AI Copywriting

Generate multiple social media copy variations from a scene, product details, and audience.

AI Leave Communication Assistant

Generate concise, natural, and formal leave messages from truthful workplace scenarios and privacy preferences.

AI Relationship Advice

Describe your relationship concern and get structured AI analysis, communication suggestions, and gentle conversation scripts.

AI Mood Haven

Share what is on your mind. AI acknowledges your feelings, helps you sort them out, and guides you through calming exercises.

AI Learning Path

Enter your learning goal and get a staged study plan with gap analysis and resource guidance.

AI Diet Advice

Enter your body metrics and goal. Get formula-based daily calorie and macro targets plus multi-day meal suggestions.

AI Interview Prep

Generate common interview questions with answer frameworks for your target role, and get your written answers reviewed with an improved version.

API Tester

Lightweight HTTP client to send GET/POST requests, configure headers/body, and format responses.

Browser Info

Detect detailed browser information, hardware specs, and modern Web feature support.

Color Converter

Convert between HEX, RGB, and HSL color formats with alpha support.

Cron Expression

Parse and generate Cron expressions, view execution schedule descriptions.

CSS Animation Preview

Preview common CSS animations and copy the code with one click.

Text Diff

Compare two texts and highlight differences.

Git Command Generator

Common Git commands organized by scenario, with one-click copy.

JWT Decoder

Decode JSON Web Tokens to view Header and Payload content.

Mermaid Editor

Generate flowcharts, sequence diagrams, and Gantt charts from text in real-time. Export to SVG.

Regex Tester

Test regular expressions with live matching and multiple flags.

Regex Library

Browse common regex patterns by category with one-click copy and online testing.

Screen Info Detector

Detect screen resolution, DPI, device pixel ratio, viewport size and other detailed information.

System Info

Extract GPU models, underlying hardware specs, and perform a lightweight benchmark score.

WebSocket Tester

Online WebSocket connection testing tool. Connect, send, and receive messages with subprotocol support.

YAML Formatter

Format, validate, minify YAML, and convert between JSON and YAML bidirectionally

Code Minifier

Minify JavaScript, CSS, HTML and JSON code by removing comments and extra whitespace.

CSS Formatter

Beautify, minify, and highlight CSS with customizable indentation.

CSV/JSON Converter

Convert between CSV and JSON formats bidirectionally.

HTML Formatter

Beautify, minify, and highlight HTML with automatic tag indentation.

JSON Formatter

Beautify, minify, validate, and escape JSON data with tree view.

SQL Formatter

Beautify, minify, and highlight SQL with multi-dialect support.

Table Converter

Convert table data between CSV, JSON, Markdown, HTML and other formats with live preview.

Base64 Encode/Decode

Quickly encode and decode strings or files to and from Base64 format.

HTML Entity Encode/Decode

Convert special characters to HTML entities or decode them back.

Morse Code

Bidirectional conversion between text and Morse code.

URL Encode/Decode

Easily encode and decode URLs and query parameters.

2FA Authenticator

Online 2FA/TOTP authenticator tool. Generate Google Authenticator 6-digit dynamic codes securely in your browser.

AES/RSA Crypto

Online tool supporting AES symmetric and RSA asymmetric encryption.

Hash Calculator

Generate hashes like MD5, SHA-1, SHA-256 securely in your browser.

Password Generator

Generate strong random passwords with customizable length and character sets.

Password Strength Checker

Real-time password strength check with crack time estimation and improvement suggestions.

Bank Card Generator

Generate virtual bank card numbers using Luhn algorithm, supporting multiple bank prefixes, for development and testing only.

ID Card Generator & Validator

Generate virtual ID card numbers conforming to GB 11643-1999, or validate existing ID card numbers.

Lorem Ipsum Generator

Generate Chinese/English placeholder text with customizable paragraphs, word count, and HTML format output.

Phone Number Generator

Generate virtual phone numbers based on real carrier prefixes, with carrier detection and location lookup, for development and testing only.

QR Code Generator

Generate customizable QR code images from text, URLs, and more.

Random Generator

Generate UUIDs, random strings, and random numbers.

Seal Generator

Generate circular, oval, square, and bar-style seals and stamps.

DNS Lookup

Query DNS records for domains, supporting A, AAAA, MX, CNAME and more.

HTTP Status Codes

Quick reference for common HTTP status codes with meanings and solutions.

IP Lookup

Query IP address geolocation and network information.

Port Scanner

Scan common ports or a custom port to check its open status.

Proxy Tester

Prepare proxy inventories, validate formats, and export records for future backend connectivity checks.

URL Parser

Parse URL structure, extract query parameters, or build URLs with parameters.

Color Palette

Generate classic color schemes including analogous, complementary, triadic, and more. Export CSS variables and Tailwind config.

SVG Icon Library

Search and preview thousands of open-source SVG icons. Customize color, size, and stroke width. Copy SVG or JSX easily.

ID Photo Generator

Pure frontend AI background removal for ID photos. Custom background colors and standard sizes, 100% privacy-safe.

Image Compressor

Compress images locally without uploading to server, protecting privacy.

Image Upscaler

Use cloud AI to enhance low-resolution images at 1x, 2x, or 4x.

Image Cropper

Pure frontend local image cropper with free aspect ratio and multiple presets.

Image Format Converter

Convert between PNG, JPG, and WEBP formats with lossless conversion and quality compression.

Image to ICO

Upload images to generate multi-size icons for website favicon or app icons.

Image Color Picker

Upload an image to extract dominant colors, with click/hover color picking and copy HEX/RGB/HSL values.

Image Splitter

Split images into multiple pieces with custom grid lines and batch download.

Image to Base64

Convert images to Base64 Data URI format with drag-and-drop support.

Image Watermark

Add text or image watermarks to images.

Case Converter

Convert text between various case formats: UPPERCASE, lowercase, camelCase, snake_case, kebab-case, PascalCase, Title Case.

Markdown Preview

Real-time Markdown preview with common syntax support.

Text Statistics

Count characters, words, lines, paragraphs and more.

Base Converter

Convert between binary, octal, decimal, and hexadecimal.

Basic Calculator

Multi-line math parsing engine with live preview, supports basic arithmetic, trigonometry, etc.

BMI Calculator

Quickly calculate Body Mass Index, assess health status, and get ideal weight range.

Budget Planner

Create monthly or annual budgets, track your income and expenses, and plan your savings goals.

Compound Interest Calculator

Calculate compound interest with regular contributions, and visualize yield curve.

Date Calculator

Date difference, date addition, and workday calculation tools.

Loan Calculator

Mortgage calculator supporting equal principal-interest and equal principal repayment methods.

Retirement Calculator

Calculate delayed statutory retirement age and date based on the latest policy.

Stopwatch / Countdown

Precise timing and countdown tool with lap records and quick time presets.

Income Tax Calculator

Calculate income tax, insurance deductions and after-tax income with cumulative withholding method.

Timestamp Converter

Convert Unix timestamps to and from local dates.

Unit Converter

Convert common units across length, weight, temperature, data storage, time, and speed.

Hourly Wage Converter

Convert between hourly, monthly, and yearly wages. Supports multiple currencies and custom working hours.

HTML to PDF

Convert HTML files or raw source code into high-quality PDF documents online.

Markdown to PDF

Convert Markdown text or raw source code into high-quality PDF documents online.

PDF Compress

Compress PDF file size and optimize image quality online to reduce file size for sharing.

PDF to HTML

Convert PDF documents to HTML format online, preserving layouts and embedded images.

PDF to Markdown

Convert PDF documents into structured Markdown text online with table and image extraction.

PDF to Word

Upload PDF documents and convert them into editable Word DOCX files for reuse and editing.

PDF Toolkit

Pure frontend PDF processing suite: merge, split, images to PDF, and export PDF to images/ZIP.

Word to PDF

Upload Word documents and convert them to PDF online for contracts, resumes, and office files.

Life Progress Bar

Visualize your life progress with grids, calculating past and remaining time.

Pomodoro Timer

Focus work timer with customizable work/break durations and automatic mode switching.

Daily Oracle

Draw a daily fortune lot to receive poetic guidance and lucky elements for the day.

Random Decision Maker

Input options and make a random choice. Great for indecisiveness, supporting lucky wheel, grid flash, card flip, and scratch card.

Dice Roller

Virtual dice rolling for games and random decisions

Horoscope

Daily, weekly, and monthly horoscopes for all 12 zodiac signs, including love, career, and wealth ratings.

Lucky Draw

Fair lottery tool with multiple prizes and rolling animations

Reaction Time Test

Test your reaction time, calculate average, and compare with the average human level.

Typing Speed Test

Test your typing speed (WPM/CPM/Accuracy) with random English and Chinese words.

Font Preview

Preview common fonts with adjustable size, weight, line height, and copy CSS code.