免費線上工具箱， 一站式搞定
圖片、音訊、PDF、AI 與開發工具，開啟即用。
100+ 款工具 · 每日更新 · 重視隱私
精選工具
查看全部工具圖片壓縮
支援 Ctrl+V 貼上、拖曳導入的線上圖片壓縮工具，精準控制輸出尺寸和品質，一鍵匯出 WEBP/AVIF 等現代格式。
JSON Formatter
Format, minify and validate JSON instantly in your browser.
Base64 Encoder / Decoder
Encode/decode text to Base64 and convert between images and Base64.
URL / HTML Encoder
Encode or decode URL and HTML entities.
Word Counter
Count Chinese/English characters, words, lines, paragraphs and top keywords.
Case & Sort Lines
Convert text case; sort and deduplicate lines.
Timestamp Converter
Convert between Unix timestamps and readable dates.
Radix Converter
Convert numbers between base 2, 8, 10 and 16.
Color Converter
Convert HEX/RGB/HSL colors and simulate color blindness.
Regex Tester
Test regular expressions and preview matches.
Password & UUID Generator
Generate strong random passwords and UUIDs.
MD5 / SHA Hash
Compute MD5, SHA-1 and SHA-256 locally for text or files.
Merge PDF
Combine multiple PDF files into one.
Extract PDF Pages
Extract selected pages or ranges into a new PDF.
Compress PDF
Rebuild pages as images to reduce file size (lossy).
PDF to Image
Convert each PDF page into PNG or JPEG images.
Markdown Preview
Live Markdown preview with HTML export.
Text Diff
Compare two texts and highlight added/removed lines.
Chinese Converter
Convert between Simplified and Traditional Chinese.
批量圖片壓縮
支援最多50張圖片批量壓縮的線上工具，JPG/PNG/WEBP/AVIF全格式覆蓋，可控尺寸與品質，一鍵打包下載ZIP，拖曳/貼上即匯入。
圖片翻轉
支援圖片的左右翻轉、上下翻轉及任意角度的旋轉
批量圖片翻轉
支援最多50張圖片批量翻轉與旋轉，左右翻轉、上下翻轉、自訂角度旋轉，保留原始尺寸，一鍵打包下載ZIP，拖曳/貼上匯入，純本地處理。
舊圖修復上色
AI 修復破損、模糊的舊照片，並一鍵自然上色
Crop Image
Crop images with a draggable selection and fine-tune position and size.
Convert Image
Batch convert images between PNG, JPEG and WebP, then download as ZIP.
Watermark Image
Add text or image watermarks with adjustable position and opacity.
Combine Images
Combine multiple images horizontally, vertically or in a grid.
Grid Cut
Split one image into a 3×3 grid and download as ZIP.
Corner & Shape
Cut images into rounded corners or circle/ellipse with transparent background.
Rounded Frame
Add a rounded colored frame around your image.
即將上線：AI 放大修復、AI 證件照、字數統計、圖片批量轉換、QR Code 生成、AI 語音克隆。
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