シンプルなオンラインツール

Font Viewer Tool

Display and preview fonts installed on your PC.

AI Image Upscaler

Convert images to high resolution using AI technology. Perfect for restoring old photos and improving image quality

AI Blog Idea Generator

Generate attractive blog post titles and outlines from a single keyword

Lorem Ipsum Generator

Generate dummy text (Lorem Ipsum) in multiple languages for design mockups with customizable paragraphs and word count

YouTube Downloader

Download YouTube videos, get thumbnails, and convert formats.

EXIF Data Remover

Remove EXIF metadata including location and shooting information from images for privacy protection

Meme Generator

Create funny meme images by adding custom text to popular meme templates

Video to Audio Extractor (MP3 Converter)

Extract audio tracks from video files and save as MP3 files

Pomodoro Timer

Practice the Pomodoro Technique with alternating work and break sessions

Loan Calculator

Calculate monthly payments and total cost for mortgages, auto loans, and personal loans

Furusato Tax Calculator

Calculate optimal donation amounts and tax deduction limits for Furusato Tax based on income and family structure

Favicon Converter

Convert images to favicon and generate files for various sizes and platforms

Icon Generator

Create and generate custom icons easily

AI Text Proofreader & Summarizer

AI-powered text proofreading, summarization, and improvement suggestions

PDF Merger & Splitter

Merge multiple PDF files or split a single PDF into multiple files

Video Compressor & Converter

Compress and convert video files to reduce size and change formats

AI Image Generator

Generate images from text prompts using AI

Invoice & Estimate Generator

Create professional invoices and estimates easily

Text Translator

High-precision multilingual translation tool using Google Gemini 1.5 Flash AI (60+ languages supported)

Video to GIF Converter

Convert video files to animated GIFs. Fast processing in your browser.

Loading Animation Generator

Generate customizable loading animations (GIF/PNG)

Background Remover

Automatically remove backgrounds from images

Image Format Converter

Convert image formats

Image Resizer

Resize and compress images to optimize file size

QR Code Generator

Convert text, URLs, WiFi settings into QR codes

Base64 Converter

Convert text or files to Base64 format and decode

JSON Formatter & Validator

Format, minify, validate, and display statistics for JSON.

Hash Calculator

Calculate MD5, SHA-1, and SHA-256 hashes for text and files.

Color Picker & Palette

Color selection, conversion, palette generation, and color harmony analysis tool

Text Diff Comparison

Compare two texts and visualize differences

URL Shortener

Shorten long URLs for easier management and sharing

Password Generator

Generate secure and strong passwords

Markdown Preview

Preview Markdown text in real-time

Unit Converter

Convert units of length, weight, temperature, area, etc.

Calculator

Basic, scientific, and programmer calculations

Date Calculator

Date difference calculation, addition/subtraction, timezone conversion

Regex Tester

Test regular expressions and view match results

CSS Formatter & Minifier

Format and minify CSS, syntax checking

SQL Formatter & Minifier

Format and minify SQL queries, syntax checking

Image Metadata Extractor

Display EXIF information and metadata

File Encryption

Safely protect files with AES encryption

Random Data Generator

Generate numbers, strings, UUIDs, colors, names

XML Formatter & Validator

Format XML and syntax validation

Text Statistics & Analyzer

Get detailed statistics and readability analysis of your text.

Image Optimizer & Compressor

Reduce file size of JPEG, PNG, and WebP images while maintaining quality.

Number Base Converter

Convert numbers between decimal, binary, octal, and hexadecimal.

Text Encoder & Decoder

Encode and decode text in various formats like UTF-8, URL encoding, HTML entities, and Base64.

CSV Data Processor

CSV file conversion, filtering, statistics

Log File Analyzer

Log file analysis, monitoring, statistics

API Tester

Send HTTP requests and validate responses.

Database Schema Designer

Visually design tables, define relationships, and generate SQL.

Network Diagnostics

Network connection diagnostics and monitoring

Text Encryption & Decryption

Text encryption and decryption

Image Filters & Effects

Apply filters and effects to images

Advanced Image Filters & Effects

Advanced image filtering using WASM + Canvas (Gaussian blur, edge detection, HDR processing, etc.)

Image Analysis & Feature Extraction

Image analysis using WASM OpenCV + TensorFlow.js (histogram, color analysis, pattern recognition)

QR Code & Barcode Reader

Read QR codes and barcodes

Audio File Converter

Convert audio file formats

Web Page Screenshot

Take screenshots of web pages

System Information

Display detailed browser, device, and network information

IP & DNS Information Tool

Investigate and display detailed IP address information and DNS records

Please select a tool from the sidebar