Blog
Practical guides for SQL, Spark, JSON, and data engineering — with free tools on VyomaStack.
·5 min read
How to Format SQL Online for Free (With AI Explain)
Learn how to beautify, minify, and explain SQL queries online — no signup, no install. Works for PostgreSQL, MySQL, Spark SQL, and more.
·6 min read
How to Fix Spark OOM Errors (Out of Memory)
Step-by-step guide to diagnosing Spark OutOfMemoryError, shuffle failures, and executor OOM — with free AI log analysis.
·4 min read
JSON to Java POJO — Free Online Guide
Convert JSON to Java POJOs, TypeScript interfaces, OpenAPI schemas, or SQL tables with VyomaStack AI JSON Studio.
·4 min read
How to Decode JWT Tokens Online (Safely)
Decode JSON Web Token headers and payloads in your browser. Inspect claims, expiration, and algorithms — free JWT decoder with no signup.
·5 min read
Cron Expression Generator — Build Schedules Online
Learn cron syntax and build expressions with presets. Human-readable descriptions and next run times for Linux, Kubernetes, GitHub Actions, and Spring.
·5 min read
Regex Tester Online — Debug Regular Expressions Fast
Test regular expressions with flags and capture groups. Highlighted matches for JavaScript, Python, and Java patterns. Free browser-based regex debugger.
·4 min read
Base64 Encode and Decode Online — Free Guide
Encode and decode Base64 strings in your browser. UTF-8 support for text, JSON, and binary data. Free Base64 converter with no signup.
·4 min read
Strong Password Generator — Create Secure Passwords Online
Generate cryptographically secure random passwords with custom length and character sets. Free browser-based password generator with strength indicator.
·5 min read
Hash Generator — MD5, SHA-256, SHA-512 Online
Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text in your browser. Free checksum and fingerprint tool with no signup.
·4 min read
URL Encoder and Decoder Online — Free Guide
Encode and decode URLs with encodeURIComponent and encodeURI. Fix broken query strings and percent-encoding issues — free, browser-based.
·4 min read
UUID Generator — Create Random UUID v4 Online
Generate cryptographically secure UUID v4 identifiers in your browser. Single or bulk UUIDs with one-click copy. Free GUID generator, no signup.
·4 min read
QR Code Generator — Create QR Codes Online Free
Generate QR codes from URLs, text, and WiFi credentials. Download PNG or copy to clipboard. Free browser-based QR code maker with no signup.