無料オンラインツール — 高速・シンプル・プライベート

Crop your photo to official passport and visa photo sizes (US, UK, Schengen, India, Canada, China, Australia) and download a single photo or a print-ready sheet with multiple copies.

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通貨コンバーター新着

毎日更新されるリアルタイムの為替レートで、30以上の世界通貨間を変換。無料・即座に利用可能。

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QRコードスキャナー新着

画像やカメラからQRコードをスキャン・デコード。URL、WiFi、連絡先、テキストを読み取ります。

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Text to Speech Reader新着

Convert any text into natural spoken audio in your browser. Choose a voice, adjust speed and pitch, and follow along with live word highlighting.

テキスト

Speech to Text Converter新着

Convert speech to text instantly using your microphone. Live transcription, multiple languages, copy or download as .txt.

テキスト

PDFからテキストへのコンバーター新着

ブラウザ内でPDFから選択可能なテキストを抽出。コピーするか.txtとしてダウンロードできます — 無料、プライベート、アップロード不要。

コンバーター

Event Countdown Timer新着

Create a live countdown to any date or event. Add multiple countdowns, share a link, and get notified the moment it hits zero.

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Invoice Generator新着

Create a professional PDF invoice in your browser. Add your logo, line items, tax and discounts, and download instantly — free, private, no sign-up.

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Random Picker Wheel新着

Spin a wheel to randomly pick a name, decision, or raffle winner. Add your own list, customize the odds, and spin — free, private, no upload.

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Random Number Generator新着

Generate random integers or decimals in any range, unique or with duplicates. Cryptographically secure, free, private, no upload.

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Morse Code Translator新着

Translate text to Morse code and Morse code back to text instantly. Play it as audio, adjust the speed, and copy or download the result.

テキスト

Voice Recorder新着

Record audio from your microphone in your browser. Pause, resume, preview, and download as WAV. Free, private, no upload.

デバイス

Image to Base64 Converter新着

Convert images to Base64 strings or decode Base64 back into images, right in your browser. Free, private, no upload.

開発

PDF Sign新着

Draw, type, or upload a signature and place it anywhere on a PDF, entirely in your browser. Free, private, no upload required.

コンバーター

JSON to CSV Converter新着

Convert JSON arrays or objects into CSV instantly in your browser. Custom delimiters, header rows, and nested object flattening. Free, private, no upload.

開発

Mock Data Generator新着

Build a custom schema and generate realistic fake data — names, emails, addresses, and more. Export as JSON or CSV instantly. Free, private, no upload.

開発

Credit Card Validator新着

Check any card number with the Luhn algorithm, detect the card network, and generate valid test numbers. Free, private, no upload.

セキュリティ

Text Encryptor & Decryptor新着

Encrypt and decrypt text with AES-256-GCM directly in your browser. Password-protected, no upload, no account.

セキュリティ

Excel to CSV Converter新着

Convert Excel to CSV and CSV to Excel directly in your browser. Multi-sheet support, custom delimiters, live preview. Free, private, no upload.

開発

YAML to JSON Converter新着

Convert YAML to JSON and JSON to YAML instantly in your browser. Validates syntax, adjustable indentation, copy or download. Free, private, no upload.

開発

Word Cloud Generator新着

Turn any text into a visual word cloud in your browser. Customize colors, shape, and size, then download as PNG. Free, private, no upload.

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GPA Calculator新着

Calculate your GPA from courses, credit hours, and letter grades. Free, private, and instant.

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Coin Flip Simulator新着

Flip a virtual coin online instantly. Track heads, tails, streaks, and flip history, or flip up to 1000 coins at once.

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Barcode Scanner新着

Scan and decode barcodes from an uploaded image or your camera. Reads EAN, UPC, Code 128, Code 39, and more.

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Text Sorter新着

Sort lines of text alphabetically, by length, numerically, or randomly. Remove duplicates and blank lines instantly in your browser. Free, private, no upload.

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XML Formatter & Validator新着

Format, validate, and minify XML online. Detects syntax errors with line and column numbers, adjustable indentation. Free, private, no upload.

開発

JSON to XML Converter新着

Convert JSON to XML and XML to JSON instantly in your browser. Validates syntax, custom root/item names, attribute handling. Free, private, no upload.

開発

IBAN Validator新着

Validate any IBAN with the mod-97 checksum, see its country and structure breakdown, and generate valid test IBANs. Free, private, no upload.

セキュリティ

Password Strength Checker新着

Check how strong your password is with real entropy math and pattern detection for common passwords, keyboard runs, and repeats. Free, private, no upload.

セキュリティ

Calorie Calculator新着

Calculate your BMR, TDEE, and daily calorie needs from age, height, weight, and activity level. Free, private, no upload.

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Subnet Calculator新着

Calculate network address, broadcast address, usable host range, and subnet mask from any IPv4 address and CIDR prefix. Free, private, no upload.

開発

Meme Generator新着

Add bold top and bottom caption text to any photo and download your meme. Free, private, no upload.

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Color Blindness Simulator新着

See how any photo looks with protanopia, deuteranopia, tritanopia, or monochromacy. Free, private, no upload.

デザイン

Text to Binary Converter新着

Convert text to binary, hexadecimal, or decimal code and back to text instantly in your browser. Free, private, no upload.

開発

HTML Entity Encoder & Decoder新着

Convert text to HTML entities or decode entities back to text instantly in your browser. Free, private, no upload.

開発

XML Sitemap Generator新着

Generate a valid XML sitemap.xml from a list of URLs in seconds. Set lastmod, change frequency and priority, then copy or download. Free and private.

開発

Running Pace Calculator新着

Calculate running pace, finish time, or distance covered. Get pace per km/mile, average speed, a race time predictor, and splits. Free, private, no upload.

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DNS Lookup Tool新着

Look up DNS records for any domain — A, AAAA, CNAME, MX, TXT, NS, SOA and CAA. Free, instant, no sign-up required.

開発

Sales Tax & VAT Calculator新着

Add or remove sales tax and VAT from any price instantly. Quick-rate presets for UK, EU, US and Japan. Free, private, no sign-up.

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Roman Numeral Converter新着

Convert numbers to Roman numerals and back instantly, with a full reference chart, subtractive-notation rules, and strict validation. Free, private.

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Screenshot Beautifier新着

Add a color or gradient background, padding, rounded corners, a drop shadow, and a browser frame to any screenshot, then export PNG or JPEG.

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Dice Roller新着

Roll virtual dice online free. Pick d4, d6, d8, d10, d12, d20, d100, or a custom side count, roll up to 20 dice, and see the running total instantly.

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Metronome新着

Free online metronome with tap tempo, adjustable time signatures, and accented beats. Sample-accurate Web Audio API timing for practice sessions.

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Final Grade Calculator新着

Calculate your weighted course grade from category scores, or find the score you need on your final exam. Free, private, and instant.

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CSS Minifier & Beautifier新着

Minify or beautify CSS instantly in your browser. Strip comments, collapse whitespace, shorten hex colors. Free, private, no upload.

開発

Screen Recorder新着

Record your screen, a window, or a browser tab in your browser. Add mic audio, pause/resume, then download as video. Free, private, no upload.

デバイス

Audio to WAV Converter新着

Convert MP3, OGG, M4A, AAC, FLAC and more to WAV in your browser. Choose sample rate, channels, and bit depth. Free, private, no upload.

コンバーター

CSS Clamp Calculator新着

Generate fluid CSS clamp() values for font-size, spacing, and more. Live scaling preview, rem or px, one-click copy. Free, private, no upload.

デザイン

URL Slug Generator新着

Convert any text into a clean, SEO-friendly URL slug. Choose hyphens or underscores, strip accents, and set a max length — instantly in your browser.

開発

CSS Border Radius Generator新着

Design CSS border-radius values visually with individual corner control and live preview. Copy the generated CSS instantly. Free, private, no upload.

デザイン

CSS Grid Generator新着

Design CSS Grid layouts visually — columns, rows, gap, alignment, or a responsive auto-fit grid. Copy the CSS instantly. Free, private, no upload.

デザイン

Body Fat Calculator新着

Estimate body fat percentage using the U.S. Navy circumference method. Get your category, fat mass, and lean mass instantly. Free, private, no upload.

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Statistics Calculator新着

Calculate mean, median, mode, range, variance, and standard deviation from a list of numbers. Switch between sample and population formulas. Free, private, no upload.

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CSS Flexbox Generator新着

Design CSS Flexbox layouts visually — direction, wrap, justify-content, align-items, gap. Copy the CSS instantly. Free, private, no upload.

デザイン

HTML Minifier & Beautifier新着

Minify or beautify HTML instantly in your browser. Strip comments, collapse whitespace, keep scripts and styles intact. Free, private, no upload.

開発

SQL Formatter & Minifier新着

Format, beautify, and minify SQL queries online across 10 dialects: MySQL, PostgreSQL, SQL Server, Oracle, and more. Free, private, no upload.

開発

CSS Animation Generator新着

Design CSS @keyframes animations visually — pick a preset, tune duration, easing, delay, and direction. Copy the CSS instantly. Free, private, no upload.

デザイン

Keyword Density Checker新着

Analyze keyword density and word frequency in any text. Spot overused words, check SEO keyword percentages, and find repeated phrases. Free, private, no upload.

テキスト

Sleep Calculator新着

Find the best bedtime or wake-up time based on 90-minute sleep cycles. Free, private sleep cycle calculator — no upload, no signup.

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Pregnancy Due Date Calculator新着

Estimate your due date from your last period, conception, or IVF transfer date. See gestational age, trimester, and days to go. Free, private, no upload.

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GIF Maker新着

Combine multiple photos into a smooth animated GIF in your browser. Control speed, size, loop count, and add a boomerang effect. Free, no upload.

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Fraction Calculator新着

Add, subtract, multiply, or divide fractions and mixed numbers instantly. Get simplified, mixed number, and decimal results. Free, private, no upload.

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Ratio Calculator新着

Simplify a ratio to its lowest terms, solve a proportion for a missing value, or scale a ratio to a target total. Free, private, no upload.

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Salary Calculator新着

Convert pay between hourly, daily, weekly, bi-weekly, semi-monthly, monthly, and annual amounts. Free, private, no upload.

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TOTP Code Generator新着

Generate live TOTP codes and verify 2FA secrets in your browser. Supports SHA-1/256/512, 6 or 8 digits, and QR codes for any authenticator app. Free, private.

セキュリティ