毎日使える PDF・画像・JSON ツールキット
PDF、画像、JSON、テキスト、日常の計算のための無料で高速なプライベートツール。すべてブラウザ内で動作します。
PDFツール
PDF結合
Combine multiple PDF files into one document online, free. Drag to reorder before merging.
PDF分割
Split a PDF by page range, extract specific pages, or divide into equal parts, free online.
ページ整理
Drag and drop to reorder PDF pages. Delete unwanted pages with one click, free online.
PDF回転
Rotate PDF pages 90, 180 or 270 degrees, individual pages or all at once, free online.
ページ削除
Select and permanently remove unwanted pages from your PDF file, free and online.
PDFページ順を逆に
Reverse the page order of a PDF online, free. Runs entirely in your browser.
PDF比較
Compare the text of two PDFs and see what changed online, free. Runs in your browser.
PDF編集
Add text, images, shapes and freehand drawings directly on your PDF pages online, free.
PDF署名
Draw, type or upload your signature and place it anywhere on a PDF page, free online.
PDFに透かし
Stamp a text or image watermark on your PDF with custom opacity and position, free online.
PDFにページ番号
Add page numbers to the header or footer of your PDF with full style control, free online.
PDFトリミング
Draw a crop rectangle to trim PDF pages, apply to one page or the whole document, free.
PDF平坦化
Flatten form fields and annotations into an uneditable PDF online, free. Works in your browser.
画像をPDFに
Convert JPG and PNG images into a single PDF document online. Reorder before converting.
PDFをWordに
Convert PDF to an editable Microsoft Word .docx document online, free, no sign-up needed.
WordをPDFに
Convert .docx or .doc Word files to PDF format online, free, no sign-up needed.
PDFを画像に
Export every page of a PDF as a PNG image, bundled in a downloadable ZIP file, free online.
PDFから画像抽出
Extract all embedded images from a PDF and download them as a ZIP archive, free online.
PDFをテキストに
Extract selectable text from a PDF online, free. Copy or download as .txt, all in your browser.
画像ツール
画像リサイズ
Resize images to exact pixel dimensions online, free. Lock aspect ratio or set custom width and height.
画像トリミング
Crop images online for free. Draw a selection rectangle to crop to any size instantly.
画像回転・反転
Rotate images 90, 180, 270 degrees or flip horizontally and vertically online, free.
画像に透かし
Add a custom text watermark to your image online, free. Control position, opacity, size and color.
画像フィルター
Apply image filters online, free. Grayscale, sepia, warm, cool and more, adjust brightness, contrast and saturation.
写真編集
Free online photo editor. Add text, stickers, emojis and frames. Create collages and social media posts for Instagram, Stories and more.
ミーム作成
Add top and bottom text to an image and download the meme.
カラーパレット抽出
Extract the dominant colors from any image to build a palette.
EXIF情報表示
View the camera, date and GPS metadata inside your photos.
SNS画像リサイズ
Resize images to exact sizes for Instagram, YouTube, Twitter and more.
画像変換
Convert images between JPG, PNG and WebP formats online, free. No upload needed, runs in your browser.
画像をBase64に
Convert any image to Base64 encoded string online, free. Output as raw Base64, Data URL, CSS background or HTML img tag.
Base64を画像に
Convert Base64 string or Data URL back to an image file online, free. Download as PNG, JPG or WebP.
JSONツール
テキスト
文字数カウント
Count words, characters, sentences, paragraphs and reading time online, free. Live results as you type, 100% in your browser.
大文字小文字変換
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case online, free and instant.
数字を文字に
Convert numbers to words, with currency mode.
ダミーテキスト生成
Generate Lorem Ipsum placeholder text online, free. Choose paragraphs and words per paragraph, then copy.
テキスト整形
Clean up text online, free: remove extra spaces, trim lines and strip blank lines instantly in your browser.
スラッグ生成
Convert any text or title into a clean URL slug online, free, lowercase, hyphenated, accent-safe.
テキスト読み上げ
Convert text to spoken audio in your browser, free. Choose a voice, rate and pitch.
開発者
UUID生成
Generate random RFC-4122 version 4 UUIDs online, free. Create one or many unique IDs instantly, entirely in your browser.
パスワード生成
Generate strong, random, secure passwords online, free. Choose length and character types. Cryptographically random, fully in your browser.
ハッシュ生成
Generate SHA-256, SHA-1 and SHA-512 hashes of text online, free. Computed with Web Crypto in your browser, nothing is uploaded.
ダミーデータ生成
Generate fake names, emails, addresses and more.
ファビコン作成
Create a favicon from a letter or emoji and download PNGs in every size.
QRコード作成
Generate a QR code from any text or URL online, free. Download as PNG, created entirely in your browser.
メタタグ生成
Generate SEO, OpenGraph and Twitter meta tags for your web page online, free. Copy-paste ready HTML.
CSSグラデーション生成
Create CSS linear gradients visually online, free. Pick colors and angle, then copy the CSS.
カラーピッカー
Pick a color and get HEX, RGB and HSL values plus a shade scale.
Gitコマンド生成
Generate the exact git commands for common tasks.
QRコード読み取り
Scan a QR code from your camera or an image, free. Decoded entirely in your browser.
Base64エンコード/デコード
Encode text to Base64 or decode Base64 to text online, free. Unicode-safe and 100% client-side, your data never leaves your browser.
URLエンコード/デコード
Encode or decode URL components online, free. Percent-encode special characters or decode them back, 100% in your browser.
HTML圧縮/整形
Minify or beautify HTML code.
CSS圧縮/整形
Minify or beautify CSS code.
JavaScript圧縮/整形
Minify or beautify JavaScript safely.
YAMLをJSONに
Convert YAML to JSON and back.
タイムスタンプ変換
Convert Unix timestamps (epoch) to human dates and back online, free. Supports seconds and milliseconds.
カラー変換
Convert colors between HEX, RGB and HSL online, free, with a live preview. 100% in your browser.
JSONをスキーマに
Convert JSON into TypeScript types, JSON Schema, Zod or Python.
SVGをコードに
Convert SVG to React JSX, a data URI or CSS background online, free. Works in your browser.
テキスト暗号化/復号
Password-protect text with AES-256 encryption in your browser.
UTMリンク削除
Strip UTM tags and tracking parameters from URLs for clean, private links.
JWTデコーダー
Decode a JSON Web Token (JWT) online, free. View the header and payload instantly. Client-side only, your token never leaves your browser.
正規表現テスト
Test and debug regular expressions online, free. See live matches and capture groups against your text, entirely in your browser.
テキスト差分
Compare two texts and see the differences online, free. Line-by-line added, removed and unchanged highlighting, 100% client-side.
SQL整形
Format, beautify and minify SQL queries.
cron式ジェネレーター
Build cron expressions with plain-English preview.
HTTPステータスコード
Searchable reference of every HTTP status code.
パスワード強度チェック
Check password strength and crack time live.
タイムゾーン変換
Convert times across cities and time zones instantly.
Markdownプレビュー
Write Markdown and see the live HTML preview online, free. Great for READMEs and docs, 100% in your browser.
コントラストチェック
Check color contrast ratio for WCAG AA and AAA accessibility online, free, with a live text preview.
HTMLプレビュー
Write HTML, CSS and JavaScript and see it render live.
XML整形
Beautify, indent, minify and validate XML online, free. 100% in your browser.
SVG最適化
Optimize and shrink SVG files online, free. Strip metadata and whitespace in your browser.
生産性
計算ツール
パーセント計算
Calculate percentages online, free: what is X% of Y, X is what percent of Y, and percentage increase or decrease.
年齢計算
Calculate your exact age in years, months and days from your date of birth, free and instant.
BMI計算
Calculate your Body Mass Index (BMI) from height and weight online, free, with the healthy-range category.
チップ計算
Calculate tip amount and split the bill between people online, free and instant.
ローン計算
Calculate monthly loan EMI, total interest and total payment online, free. For home, car and personal loans.
日付の差
Calculate the difference between two dates in days, weeks, months and years online, free.
単位変換
Convert length, weight and temperature units online, free, metres, feet, kg, pounds, Celsius, Fahrenheit and more.
通貨換算
Convert between 150+ world currencies with daily exchange rates.
ゲーム
2048ゲーム
Slide tiles to reach 2048.
スネークゲーム
Classic snake, arrow keys or swipe.
フラッピーバード
Flappy Bird online. Tap to flap through the pipes.
テトリス
Classic Tetris online. Clear lines, level up.
恐竜ゲーム
The Chrome offline dinosaur game. Jump the cacti, duck the birds.
ブロック崩し
Breakout brick-breaker online. Bounce the ball and smash every brick.
神経衰弱
Flip and match all the pairs.
タイピング速度テスト
Test your typing speed and accuracy.
マインスイーパー
Classic Minesweeper online. Clear the board without hitting a mine.
単語当て
Wordle-style word game. Guess the hidden five-letter word in six tries.
三目並べ
Play Tic-Tac-Toe online vs the computer or a friend.
サイモンゲーム
Simon Says memory game online. Repeat the growing color pattern.
反応速度テスト
Test your reaction time online. Click when the screen turns green.