Free online tools for PDF, image, text, developer, color, and conversion tasks. Most run 100% in your browser with no signup required.
ThothBox is a collection of 333 free online tools for everyday tasks: PDF conversion and merging, image resizing and format conversion, text analysis and formatting, color picking, encryption, hashing, unit conversion, and much more. Most tools process everything locally in your browser with WebAssembly and modern browser APIs — your files and data never leave your device. A few network tools (DNS lookups, WHOIS, ping, SSL checks, API testing) contact third-party services to do their job; they are clearly marked and never receive anything beyond what the task requires.
No signup required. Because nearly every tool runs client-side on your device, there are no accounts or queues. Note that large operations are subject to your browser's available memory and device capabilities.