Zero Latency
Powered by your device's CPU. Formatters, converters, and validators execute instantly without round-trips to a remote server.
Local Execution
Data never leaves your browser window. What you paste stays private.
Open Standard
Built on modern web technologies without bloated frameworks.
Developer Experience
Designed to be the tool you wish you had. Clean UI, keyboard shortcuts (coming soon), and instant feedback.
Essential Utilities
Daily drivers for modern development
JSON Formatter
Validate, minify, and beautify JSON data instantly.
Base64
Encode/decode strings.
Regex Tester
Test patterns.
UUID Generator
Generate cryptographically strong v4 UUIDs.
Image Compressor
Optimize any image format Images locally without upload.
Hash Generator
MD5, SHA-256 hashing.
Password Check
Analyze strength.
JWT Decoder
Decode JWT tokens locally.
The client-side paradigm
Traditional web tools operate on a server-client model. You upload data, the server processes it, and sends back the result. While functional, this introduces two critical flaws: latency and privacy risk.
SimpleDevTools inverts this model. By leveraging the V8 JavaScript engine present in modern browsers, we execute complex logic directly on your machine.
Architecture Comparison
There is no network request. When you paste a 5MB JSON file, it is parsed by your CPU. This ensures that sensitive data—API keys, PII, configuration secrets—never leaves your local environment.
Workflow
Input
Paste code into browser
Process
JavaScript Execution
Output
Instant Result