40+ free online tools for developers. Code formatters, validators, generators, converters, and more. No signup, no ads, no limits.
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Pretty-print, validate, and minify JSON data. See errors instantly with line numbers.
Use Tool →Encode and decode Base64 strings instantly. Supports text and file input.
Use Tool →Generate UUIDs in multiple formats: v1, v4, v5. Batch generate up to 100 at once.
Use Tool →Generate cryptographic hashes for any text. MD5, SHA-1, SHA-256, SHA-512.
Use Tool →Test and debug regular expressions with real-time matching. Supports JavaScript regex syntax.
Use Tool →Pick colors and convert between HEX, RGB, HSL. Generate color palettes and gradients.
Use Tool →All tools are free forever. No signup, no limits. Add wswxa.com to your bookmarks for quick access.
Browse All 40+ ToolsIn-depth guides and tutorials for developers.
A practical roadmap for learning JavaScript from scratch, with recommended resources and practice strategies.
Read More →Compare Git Flow, trunk-based development, and GitHub Flow. Learn when to use each approach.
Read More →Design clean, consistent, and scalable REST APIs. Naming conventions, versioning, and error handling.
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