Categories

Generate

Random Password QR Code Screen Record Range Number Lab UUID Batch Forge Random Grouping

Image

Offline Watermark Image Compress QR Content Reader Barcode Canvas

Encrypt

Text MD5 File MD5 HMAC Hash SHA Hash AES Cipher Rabbit Cipher DES / 3DES RC4 Cipher Base64 Unicode Convert URL Encode

Time

Timestamp Date Calculation World Time Business Day Offset Multi-Line Time Converter

Convert

Unit Switchboard

Finance

English Amount Draft Number Sheet Summary Loan Payment Planner

Text

RMB Uppercase List Cleanup Emoji Cleaner CN ID Check Chinese Script Switch Pinyin Transcriber Pluralize English Case CN/EN Spacing Trim Text Regex Test Markdown to HTML

Dev

JSON Format JSON Type Sketch CSS Format JavaScript Format HTML Format SQL Format Cron Schedule Naming Gearbox Color Format Bridge WebSocket Test Go Struct / JSON Less to CSS Base Conversion

Loading tool...

Preparing the workspace and controls for this tool.

© 2026 窝工具

Offline Watermark

Apply repeated text watermarks to local images without uploading them.

Opacity and angle

Local rendering

Export result

Generate

Image

Text

Color

Opacity

24%

Size

24px

Rotate

-30°

Upload an image first

The preview and watermarked result will appear here.