Lightweight tools for developers, simple and efficient.
Supports JPG / PNG / WebP, lossless/lossy compression, direct download, privacy protected, files are not uploaded to server and can be used offline!
Supports batch conversion of JPG, PNG, WebP, GIF, BMP formats, custom quality, download as ZIP after conversion
Free online bulk rename tool supporting file/folder batch renaming, prefix numbering, text replacement, custom naming rules, pure frontend local operation, no installation required, supports ZIP packaging download, protects file privacy.
Automatically add vendor prefixes to your CSS code.
Upload your SVG file to compress it without losing quality.
Test your regular expressions and visualize the matching results.
Format, validate, compress and expand JSON code online.
Convert between RGB, HEX and HSL color codes with real-time preview.
Convert between Unix timestamp (seconds/milliseconds) and human-readable time.
Encode text or files to Base64, or decode Base64 back to text.
Free online QR code generator supporting text, URLs, vCards, WiFi and more; upload images to scan and parse QR codes securely without downloads.
Convert Docker run commands to docker-compose.yml format instantly.
Free image grid splitter tool, supports one-click splitting of images into 9-grid, image preview, batch download, adapts to mobile/computer devices, no installation required, directly use online, the best choice for making WeChat Moments 9-grid images!