Security Tools

JWT decoding, UUID generation and validation, password and hash generators for development and testing.

JWT decoding, UUID generation and validation, password and hash generators for development and testing. DevToolDock groups these utilities so you can discover the right free online developer tool without hunting through unrelated pages. Each tool opens instantly in your browser, which makes this category useful when you are debugging a production issue, preparing documentation, or validating data before it reaches your API gateway. You will find 11 tools listed on this page; every card links directly to a dedicated page with its own instructions, FAQs, and related utilities so crawlers and users can move through a clear internal linking structure. That structure mirrors how engineering teams work in practice: start from a category (for example JSON or encoding), pick a focused utility, then jump to adjacent tools when your task expands. Because many workflows combine multiple steps—format JSON, diff two payloads, then encode a string for transport—category hubs reduce “discovered but not indexed” problems by giving search engines more context and more paths into your most important pages. Bookmark this category if you return to these tasks weekly, and use the sitewide directories under Tools and All Tools when you need cross-category discovery. For AI-assisted workflows, pair classic utilities with the AI tools section; for long-form guidance, see the blog. Together, categories, tools, and articles help you build repeatable, fast routines without installing desktop software.