A Cleaner, Safer Online Toolset

Finance calculators, developer helpers, and everyday tools. Most run in your browser; cross-device transfer and optional sync use server storage.

Recommended
📦

Go Struct ⇄ JSON Converter

Instantly generate production-ready Go struct definitions from any JSON payload, complete with typed fields and custom JSON tags. Bi-directional parsing allows you to perfectly render JSON responses directly from nested Golang structs.

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💰

Unit Price Calculator & Price Comparison

Compare grocery prices by weight, volume or item count. Include multipacks, free packs, discounts and extra costs to find the lowest unit price.

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🏖️

Quit My Job & FIRE Calculator

Estimate how long your savings could last after quitting. Enter your monthly budget, adjust assumptions and explore your balance and FIRE benchmark.

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🖼️

HEIC to JPG Converter

Convert HEIC photos to JPG format locally. Batch processing supported, secure and private.

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🔷

TypeScript ⇄ JSON Converter

Convert JSON to TypeScript interfaces or vice-versa. Support nested structures, optional fields, and JSDoc generation. Perfect for frontend developers building type-safe applications.

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📄

JSON Parser Tool

Professional JSON formatter and validator. Features an intelligent tree view with summary previews, global search with auto-expansion, and one-click beautification for efficient data debugging.

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📱

Subscription Manager

Say goodbye to subscription chaos! This all-in-one tool helps you track video, music, and software subscriptions, clearly displaying total annual costs with 6-digit Cloud Sync for multi-device access.

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📸

Screenshot Beautifier

Effortlessly transform ordinary screenshots into visually stunning presentation assets. Add consistent backdrops, perfect padding, and sleek device frames with one click – ideal for blog posts, software showcases, and captivating social media updates.

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🧾

Invoice Scanner

Designed for the 2026 Incentive Invoice Lottery! Batch import invoices (Images/PDFs), filter eligible ones, and intelligently calculate the best combinations to reach 100 RMB for merging. 100% local processing, zero server uploads, protecting your financial privacy.

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📱

Device Mockup Generator

Wrap your app or website screenshots in beautiful device frames and stunning gradients. Export in high-res PNG for Product Hunt, App Store, or your portfolio.

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📶

WiFi QR Code Generator

Create a professional, printable QR code card for your guests. All data is processed locally in your browser for maximum security.

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✨

Social Media Font Generator

Make your social media profiles stand out. Transform normal text into fancy fonts, cursive scripts, and unique symbols for Instagram, TikTok, and Twitter bios with easy copy-paste.

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📸

Code to Image Generator

Create high-quality code snippets for social media, blogs, or documentation. Features customizable themes, window styles, and backgrounds to make your code look professional.

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🤯

How Ridiculous Is This Money?

Turn a sum of money into bubble tea, meals, working time, or a stack of cash you could actually carry. Same number. Very different feeling.

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🏁

QR Code Generator

Create custom QR codes with logos, colors, and vCards. High-resolution download supported.

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🧩

Where Did the Money Go?

Ten thousand sounds like a lot. Then come 343, 78, 126.50… Tap away little purchases and watch a big budget disappear.

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🔐

Random Password Generator

Generate secure, customizable passwords with various character sets and options. Perfect for enhanced security.

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⏳

How Long Is a Minute?

No clock. Just your intuition. Stop when a minute feels over, then discover how close you were.

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🗓️

Where Did My Day Go?

Sleep, work, commuting, scrolling… Fit everyday activities into 24 hours and watch how much space remains.

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🔗

URL Payload Analyzer

Deconstruct complex, messy, and deeply encoded URLs. Read and edit parameters safely, auto-decode deeply nested layers (Base64, Double UrlEncode).

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🧠

How Much Can You Remember?

A banana, a key, a panda… Meet a few objects, then find them among the impostors. Is your mental lost-and-found open today?

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🔐

JWT Analyzer & Crafter

Deeply dissect JSON Web Tokens. Decode payload data, analyze human-readable expiration times, and instantly craft or re-sign completely new mock tokens for testing.

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🎨

Can your eyes fool you?

The word says RED. The ink is blue. Answer with the color and find out whether your eyes or your reading habit gets the last word.

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🐳

Docker Configuration Manager

Instantly transform complex `docker run` commands into standard `docker-compose.yml` files. Bidirectional conversion included.

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🏦

Loan & Mortgage Calculator

Calculate monthly payment, total interest, and total repayment for loans. Supports both Equal Monthly Installment (EMI) and Equal Principal methods.

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🍳

Cooking Unit Converter

Stop guessing your recipe measurements. Instantly convert 50+ baking and cooking ingredients between volumes (Cups) and weights (Grams) using actual physical density, with real-time calorie tracking.

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🔑

UUID Generator

Batch generate secure and unique UUID (v4) identifiers. Supports custom casing and bulk export, fully compliant with RFC4122 standards for database keys and system development.

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✍️

Signature Style Generator

Create beautiful, elegant hand-drawn signatures instantly. Download as transparent high-res PNGs.

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🔠

Text Case Converter

Instantly switch your text between Uppercase, Lowercase, camelCase, snake_case, and more. Includes real-time word count and text analysis for developers and writers.

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😴

Sleep Cycle Calculator

Find the perfect time to fall asleep or wake up. We calculate 90-minute sleep cycles so you can wake up refreshed and energized.

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📧

Email Subject Previewer

Check how your email subject and preheader appear on mobile and desktop devices to prevent truncation.

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📺

Social Media Safe Zone

Visualize safe zones for YouTube, TikTok, Instagram, and Twitter. Crop your images perfectly to avoid UI obstructions.

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🎬

Video Script Timer & Voice Preview

Estimate video duration based on script length and reading speed. Features teleprompter mode for Vertical and Horizontal formats with voice preview.

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🏥

BMI Health Calculator

Calculate your Body Mass Index and get personalized health insights for a healthier lifestyle.

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✂️

SVG Minimizer & JSX Converter

Clean up exported SVGs. Strip useless metadata, force responsive sizing (viewBox), and instantly convert to tiny inline SVGs, CSS Data URIs, or React JSX.

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🎨

Image Color Picker

Upload any image to extract dominant color palettes or capture specific pixel colors. Supports HEX, RGB, and HSL exports, making it an essential tool for designers and developers.

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🐧

Chmod Permissions Calculator

Calculate Linux file permissions visually. Toggle checkboxes to instantly generate accurate Octal and Symbolic representations.

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📱

Cross-Device Text Transfer

Easily transfer text between devices using a secure temporary code. Perfect for sharing clipboard content, links, or notes across your phone and computer.

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📅

Date Calculator

Calculate dates, add or subtract days, weeks, months, and find the difference between two dates.

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📐

Aspect Ratio Calculator

Calculate and maintain aspect ratios for images, videos, and designs. Ensure perfect proportions every time.

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📊

Percentage Calculator

Calculate a percentage of a total, a percentage of a number, an increase or decrease, and percentage change.

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🏷️

Discount Calculator

Calculate sale prices, savings and effective discounts, including fixed reductions, reverse calculations and two successive discounts.

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⏱️

Work Hours Calculator

Professional work time & earnings tracker. Calculate regular hours, overtime, and total pay instantly.

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🎯

Savings Goal Calculator

Plan your financial future. Calculate the time or monthly savings needed to reach your goals.

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🔒

Password Strength Checker

Check the strength of your passwords and get suggestions for improvement. Ensure your online accounts are secure.

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💵

Smart Tip Calculator

Calculate fair gratuity and split bills effortlessly with our precision tip calculator.

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🤝

Group Split Calculator

Professional group expense splitter. Handle multiple items, complex quantities, and custom proportions with ease.

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⛽

Fuel Cost Calculator

Calculate fuel consumption, estimate costs, and compare vehicle efficiency. Track your fuel economy and plan your trips.

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⚡

Electricity Cost Calculator

Professional energy consumption analyzer. Calculate appliance running costs per day, month, and year with precision.

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🏠

Rent vs Buy Calculator

Compare the net financial outcome of buying vs. renting, factoring in US-specific equity, tax benefits, and opportunity costs.

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🔍

Text Comparison Tool

Professional text diffing tool. Supports synchronized side-by-side scrolling and character-level highlighting to clearly show additions, deletions, and modifications between document versions.

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👕

Clothing Size Converter

Convert clothing sizes between different international sizing systems. Find your perfect fit anywhere.

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🤖

AI Token Calculator

Professional AI token analyzer and cost estimator. Compare pricing across OpenAI, Anthropic, and Google Gemini instantly.

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🔨

Home Area Calculator

Accurately measure room area and intelligently estimate material requirements. Supports metric and imperial units, providing professional guidance for paint, flooring, and wallpaper to minimize waste.

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🚗

Speed Converter

Convert between different speed units including mph, km/h, m/s, and more with precision.

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⏱️

Data Transfer Time Calculator

Professional bandwidth & transfer estimator. Calculate download and upload times across all digital units and network speeds.

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🕰️

Cron Expression Visualizer

Convert cron expressions into human-readable text and preview the next runs (local timezone).

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🎙️

Online Audio Recorder

Record audio directly in your browser. Play back and download recordings in MP3, WAV, or WEBM formats with customizable sample rates.

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🛑

CORS Matrix Sandbox

Interactive simulator for Cross-Origin Resource Sharing. Configure client and server headers to diagnose preflight failures instantly.

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🛢️

SQL Schema Diff & Migration Generator

Precisely compare differences between two SQL table schemas. Automatically generate MySQL-compatible `ALTER TABLE` migration scripts to sync your environments.

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🔧

Browser Information

Generate a comprehensive report of your browser engine, hardware specs, and network environment. Instantly inspect User Agent, resolution, and Web API capabilities.

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🔤

Unicode Converter

Bidirectional conversion between characters, Unicode escape sequences, and HTML entities. Support for Hex/Dec decoding to resolve encoding issues instantly.

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🅿️

Parking Meter Timer

Smart parking assistant with customizable progressive rates and daily caps. Track your session in real-time and calculate exact costs to avoid parking fines.

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🌍

Carbon Footprint Calculator

Calculate your carbon footprint and understand your environmental impact. Get tips for reducing emissions.

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