SeaOtter Tools
Secure, lightweight browser utilities. Local tools perform computations directly in your browser to guarantee maximum privacy.
🔥 Popular Tools
JSON Formatter & Validator
Format, minify and validate JSON data locally in your browser.
Universal 40-in-1 Unit Converter
Real-time, local unit converter supporting 40 domains: Physics, Development, Finance, Life, Engineering, Time & Geo.
All-in-One Crypto Suite
Supports MD5, SHA-1/256/512, AES, DES, HMAC, Base64, URL, Hex, Unicode, HTML Entity and Password Generator.
Image Format Converter
Free online batch image format converter. Convert PNG, JPG, WebP, ICO, SVG, and Base64 formats natively and securely in your browser. Supports bulk conversion.
🛠️ All Productivity Tools
Total: 11JSON Formatter & Validator
Format, minify and validate JSON data locally in your browser.
Base64 Encoder/Decoder
Encode or decode strings using standard Base64 encoding.
Internet Speed Test
Test your internet connection speed (ping, jitter, download, and upload) in real-time.
Lottie Preview & Optimizer
Preview, copy/download SVG, optimize JSON, and edit Lottie animations locally.
Image Format Converter
Free online batch image format converter. Convert PNG, JPG, WebP, ICO, SVG, and Base64 formats natively and securely in your browser. Supports bulk conversion.
Image Compressor & Resizer
Free online bulk image compressor and resizer. Batch compress, resize, rotate, flip, and crop corners local in your browser. 100% private with ZIP downloads.
AI Model Database
A comprehensive index of specifications, token pricing, and API provider configurations for foundation language and multimodal models.
Universal 40-in-1 Unit Converter
Real-time, local unit converter supporting 40 domains: Physics, Development, Finance, Life, Engineering, Time & Geo.
All-in-One Crypto Suite
Supports MD5, SHA-1/256/512, AES, DES, HMAC, Base64, URL, Hex, Unicode, HTML Entity and Password Generator.
JWT Debugger & Parser
Decode, verify, and generate JSON Web Tokens locally in your browser. Fully supports HS256, RS256, ES256, EdDSA, and more.
Canva Online Graphic Design
Create professional designs easily with templates. Perfect for non-designers.