必要なツールがすべて揃う
開発者、学生、日常利用向けの無料・高速・プライベートなブラウザベースツール。広告なし。登録なし。データアップロードなし。
画像ツール
画像の圧縮、リサイズ、トリミング、変換 — ブラウザで
Add Text to Image
Add customizable text overlays to your images instantly online. Choose fonts, colors, styles, shadows, and more.
Image Compressor
Compress JPG, PNG, and WebP images to 50KB, 100KB, or custom sizes instantly in your browser.
Convert Format
Convert images instantly between JPG, PNG, and WEBP formats directly in browser with quality sliders.
EXIF Metadata Viewer
Instantly view hidden image EXIF data, check camera details, GPS location, or remove EXIF for privacy.
Passport Photo Maker
Create official passport, visa, and ID photos. Crop, resize, and print 4x6 sheets at home.
Image Resizer
Resize JPG/PNG to exact pixels, cm, or mm. Batch resize and set 300 DPI for print.
Crop Image
Crop photos online to exact pixels, circle shape, or aspect ratios like 16:9 and 1:1.
Add Watermark
Add text or logo watermark to your images to protect your copyright. Support for batch processing.
Blur Image
Blur faces, backgrounds, or sensitive areas in photos online. Free image blur tool with brush and shape selection.
Image Color Picker
Pick colors from any image instantly. Extract HEX, RGB, HSL, and generate color palettes online.
PDFツール
PDFファイルの結合・分割・圧縮・変換 — アップロード不要
Compress PDF
Reduce PDF size to 100KB, 200KB, or custom limits. Optimize for uploads and email.
Merge PDF
Combine multiple PDFs into one document locally. Drag, drop, reorder, and merge instantly.
Split PDF
Extract specific pages or split large documents. Visual page selector and range extraction.
Rotate PDF
Rotate PDF pages instantly. Fix sideways or upside-down PDF files online for free.
PDF Metadata Viewer
View PDF metadata instantly. Check author, title, creation date, and remove metadata securely online.
Add Page Numbers to PDF
Insert page numbers into PDF documents instantly. Choose position, style, and format.
Watermark PDF
Add text or image watermarks to your PDF files instantly. Customize position, opacity, and rotation.
JPG to PDF
Convert JPG, PNG, WEBP, or HEIC into a single PDF. Arrange order and customize layout.
PDF to JPG
Extract pages from your PDFs into high-quality JPG or PNG images instantly.
PDF to Word Converter
Convert PDF files to editable Word documents instantly in your browser.
電卓
日常使いの金融・健康・数学電卓
Percentage Calc
Calculate marks %, shopping discounts, % increase, and profit/loss margins instantly.
GST Calculator
Calculate GST inclusive/exclusive prices with CGST & SGST splits. Create simple bills.
EMI Calculator
Calculate home, car, or personal loan EMIs instantly. Get complete repayment schedules and interest breakdowns.
Age Calculator
Calculate exact age, next birthday countdown, and total time lived stats.
SIP Calculator
Calculate your SIP returns and maturity amount with monthly investment, expected return rate, and tenure.
Compound Interest Calculator
Calculate compound interest, total maturity amount, and interest earned with support for multiple compounding frequencies.
BMI Calculator
Calculate your Body Mass Index instantly. Enter height and weight to find your BMI, category, and healthy weight range.
Salary Calculator
Calculate your take-home salary after tax and deductions. Convert between annual, monthly, weekly, and hourly pay instantly.
開発者ツール
UUIDジェネレーター、JSONフォーマッター、エンコーダー、Regexテスターなど
Image to Base64
Encode image to Base64 string or decode Base64 to image instantly. Fast and free.
URL Encoder / Decoder
Encode or decode URLs and query strings instantly in your browser. Free online URL encoding tool for developers.
Base64 Encoder / Decoder
Encode text or decode Base64 strings instantly in your browser. Free online Base64 encoder and decoder tool for developers.
JSON Formatter
Format, validate, and minify JSON online. Includes an advanced syntax checker and compare diffing.
Color Code Converter
Convert colors between HEX, RGB, HSL, HSV, and CMYK formats instantly. Free online color converter with live preview for developers and designers.
Word Counter
Instantly calculate words, characters, sentences, paragraphs, Keyword Density and reading time.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text or file instantly in your browser. Free online hash generator tool.
JWT Decoder
Decode and inspect JWT tokens instantly in your browser. View header, payload, and expiry details. Free online JWT decoder tool for developers.
Regex Tester
Test and debug regular expressions instantly in your browser. See live matches, groups, and replacements with syntax highlighting. Free online regex tester.
UUID Generator
Generate random UUIDs and ULIDs instantly in your browser. Supports v1, v4, v5, and bulk generation. 100% secure and free.
Cron Expression Builder
Build, test, and understand cron expressions visually. See the next 10 scheduled run times instantly. Free online cron expression generator and validator.
Text Diff Checker
Compare two texts side by side and highlight every difference. Line-by-line and word-by-word diff with change statistics. Free online text comparison tool.
単位変換
長さ・重さ・温度・速度・面積・データサイズを変換
Length Converter
Convert length and distance units instantly - mm, cm, m, km, inches, feet, yards, miles, nautical miles, and more. Free online length converter.
Temperature Converter
Convert temperature between Celsius, Fahrenheit, Kelvin, and Rankine instantly. See formulas, real-world references, and live conversions. Free online temperature converter.
Weight & Mass Converter
Convert weight and mass units instantly - kg, grams, pounds, ounces, stone, tonnes, and more. Free online weight converter with real-world references.
Data Storage Converter
Convert data storage units instantly - bits, bytes, KB, MB, GB, TB, PB. Supports both decimal (SI) and binary (IEC) standards. Free online data storage converter.
Speed Converter
Convert speed units instantly — km/h, mph, m/s, knots, Mach, and more. Free online speed converter with real-world speed references and pace calculator.
Area Converter
Convert area units instantly — square meters, square feet, acres, hectares, square kilometers, square miles, and more. Free online area converter for real estate, land, and construction.
Business Tools
Free online business tools for freelancers and small businesses — GST invoices, salary slips, quotations, and more. No signup, no watermark.