Image Tools
Batch Image Converter
Batch resize, convert, and compress images with drag-and-drop upload.
ID Photo Watermark
Add text watermarks to ID photos with color, size, angle, opacity, and position controls.
Round Image Corners
Round image corners with custom radius, transparent or solid background, and PNG/JPEG/WebP export.
Image to Favicon
Crop, zoom, and export PNG or ICO favicons in all standard sizes.
Text Tools
Rich Text to Long Image Poster
Edit rich text, tune fonts and spacing, and export a high-resolution long image poster.
Curved Text Generator
Turn text into arcs or circles with adjustable angle, radius, rotation, and PNG export.
Text to Xiaohongshu Post Image
Turn Markdown into vertical social post images with live preview and PNG export.
Symbols Library
Browse and copy Unicode symbols for documents and social posts.
Text Icon Generator
Turn text and emoji into icons for websites and apps, with adjustable colors and sizes.
Generate Article Slug
Generate SEO-friendly URL slugs from Chinese or English titles with pinyin conversion.
Document Tools
3D Printing Tools
Parametric 3D Model Generator
Generate parametric STL models for 3D printing, including rounded plates, sectors, cylinders, and pipes
Washer Generator
Create custom washer STL models for 3D printing with adjustable inner radius, outer radius, and thickness.
Grid Plate Generator
Generate grid plate STL models for 3D printing with custom holes, spacing, and borders.
Storage Box Generator
Create storage box STL models for 3D printing with custom size, walls, dividers, and corner radius.
Developer Tools
Base64 Encoder and Decoder
Encode text, images, and files to Base64 or decode Base64 back to files.
MD5 / SHA Hash Checker
Calculate MD5, SHA-1, and SHA-256 checksums for any file, with progress and copyable results.
Domain Hack Generator
Generate creative domain hack combinations from a word or brand name.
Yoo.domains Domain Search
Combine keywords and TLDs to find and filter available domain names.
