JSON Formatter
Format and beautify JSON data with syntax highlighting
DataDeveloper Tools for Daily Use
Fast, privacy-focused utilities for developers. All tools run in your browser - your data never leaves your device.
126 tools 17 categories 100% client-side
StrateCode DevTools is a curated collection of browser-based developer utilities built for professionals who value speed, privacy, and precision. Every tool on this platform runs entirely in your browser — no server uploads, no round-trip latency, no risk of sensitive data leaving your machine. Whether you are debugging a malformed JWT at 2 AM, reformatting a 50 MB JSON payload before a code review, or generating cryptographically secure UUIDs for a distributed system, these tools are designed to integrate seamlessly into your existing workflow without friction.
The project was born from a simple observation: developers cycle between dozens of online utilities every day, each with different quality standards, intrusive ads, unclear data policies, and inconsistent interfaces. StrateCode consolidates the most common operations — encoding, hashing, formatting, validation, conversion, and generation — into a single, fast, standards-compliant destination. Every implementation follows the relevant RFC, W3C recommendation, or ECMA specification, so you can trust the output matches what your production systems expect.
Performance is a core design constraint, not an afterthought. Pages load in under two seconds on standard connections, ship zero third-party scripts before user interaction, and maintain Lighthouse scores above 95 across all categories. The interface respects accessibility standards at WCAG AA level, supports full keyboard navigation, and adapts to reduced-motion preferences. For computationally intensive operations — large file checksums, complex JSON diffs, CSV transformations — processing moves to Web Workers so the main thread stays responsive and your browser never freezes.
StrateCode is free to use, requires no account, stores nothing remotely, and works offline once cached. It exists because developer tools should be fast, private, and reliable — and nothing else should get in the way.
Featured Tools
JSON Validator
Validate JSON syntax and structure with precise error messages for faster API debugging
DataBase64 Encode
Encode text to Base64 format with UTF-8 safety for APIs, headers, and payloads
EncodingBase64 Decode
Decode Base64 data into readable text with safe UTF-8 handling and quick validation
EncodingJWT Decoder
Decode JWT tokens locally in your browser to inspect headers, claims, and token expiration
SecurityUUID Generator
Generate random UUID v4 identifiers instantly for database keys, events, and distributed systems
TextBrowse by Category
Data Tools
Format, validate, and transform structured data formats including JSON, XML, YAML, and SQL. These tools handle the daily tasks of making data readable, verifying syntax correctness, and converting between serialization formats used in APIs and configuration files.
Encoding Tools
Encode and decode data using Base64, Base64URL, HTML entities, and Unicode escape sequences. Essential for preparing payloads for transport layers, embedding binary data in text protocols, and safely rendering user-supplied content in web pages.
Security Tools
Generate cryptographic hashes, HMAC signatures, secure passwords, and file checksums. Verify data integrity, create authentication tokens, and assess password strength — all using the Web Crypto API without exposing sensitive inputs to external services.
Date & Time Tools
Convert between Unix timestamps and human-readable dates, parse cron scheduling expressions, and transform timezone-aware datetime values. Critical for debugging log entries, configuring scheduled tasks, and resolving time synchronization issues across distributed systems.
Network Tools
Parse, encode, and analyze URLs, query parameters, and network-related data structures. Debug malformed links, inspect redirect chains, construct properly escaped query strings, and break down complex URIs into their individual components.
Text Tools
Minify HTML and CSS for production deployment, test regular expressions with real-time matching, generate unique identifiers, and convert between markup formats. Streamline front-end build workflows and validate pattern logic before committing to code.
JSON Tools
A comprehensive suite dedicated to JSON operations: format and minify documents, validate syntax, compare structures with visual diffs, query with JSONPath expressions, convert to CSV or TypeScript types, and generate realistic mock data from schemas.
API Tools
Build and test API requests with curl command construction, generate and verify JWT tokens, inspect HTTP headers, and explore OpenAPI specifications. Designed for the full API development lifecycle from prototyping through debugging production issues.
DevOps Tools
Validate Kubernetes manifests, generate and parse cron expressions, format environment files, compare semantic versions, and inspect infrastructure configurations. Tools built for the operational side of software delivery and deployment automation.
AWS IAM Tools
Analyze AWS IAM policy documents to understand permission boundaries, detect overly permissive rules, and visualize the effective access granted by complex policy combinations. Essential for cloud security audits and least-privilege enforcement.
Terraform Tools
Audit Terraform configurations, explore resource dependencies, and analyze infrastructure-as-code for best practices. Understand module structures and identify potential issues before applying changes to cloud environments.
Kubernetes Tools
Inspect, validate, scan, and generate Kubernetes manifests and configurations. Go beyond YAML syntax to check resource specifications against best practices, security policies, and cluster compatibility requirements.
Docker Tools
Analyze Docker Compose files and Dockerfile instructions for configuration issues, optimization opportunities, and security concerns. Understand multi-service architectures and container build processes at a glance.
Web Server Tools
Inspect and analyze Nginx and Apache web server configurations. Identify directive conflicts, understand routing rules, and validate configuration syntax before deploying changes to production load balancers and reverse proxies.
OpenAPI Tools
Diff API specification versions, explore endpoint structures interactively, and generate mock servers from OpenAPI documents. Track breaking changes between releases and prototype API consumers without deploying backend services.
SQL Tools
Analyze SQL queries for performance characteristics, identify missing indexes, and understand execution plan implications. Optimize database interactions before they reach production workloads.
Technical SEO Tools
Audit HTML documents for SEO compliance, validate robots.txt directives, inspect sitemap structures, and analyze content for search engine optimization factors. Ensure technical foundations support discoverability and ranking.
Why Use StrateCode DevTools?
Instant Client-Side Processing
Every operation executes directly in your browser with zero network requests. No uploads, no server queues, no waiting — results appear in milliseconds regardless of your connection speed.
Zero-Knowledge Privacy
Your data never leaves your device. JWT tokens, API keys, passwords, and proprietary payloads stay in browser memory and are never transmitted, logged, or stored on any external server.
Standards-Compliant Output
Implementations follow RFC specifications, W3C recommendations, and ECMA standards. Base64 encoding matches RFC 4648, UUID generation follows RFC 9562, and hash outputs conform to FIPS 180-4.
Accessible by Default
Built to WCAG AA standards with full keyboard navigation, ARIA live regions for dynamic updates, visible focus indicators, and respect for prefers-reduced-motion user preferences.
Lighthouse-Optimized Performance
Every page targets Performance 95+, Accessibility 95+, Best Practices 100, and SEO 100. Critical CSS stays under 20 KB, total JavaScript under 70 KB compressed, with zero render-blocking third-party resources.
Web Worker Architecture
Heavy operations like file checksums, JSON diffs, and CSV transformations run in dedicated Web Workers. The main thread stays responsive so your browser never freezes during large-payload processing.