# Computer Science Tech > Portfolio, engineering blog, and free online utilities for developers and everyday calculations in India. This site is Computer Science Tech (computerscience.tech): systems architecture, full-stack engineering, and privacy-friendly browser tools. Most utilities process data locally in the visitor's browser. ## Primary pages - [Home](https://computerscience.tech): Portfolio, experience, and contact. - [Blog](https://computerscience.tech/blog): Articles on software engineering, cloud, and AI. - [Utilities](https://computerscience.tech/utilities): Free online tools index. - [Sitemap](https://computerscience.tech/sitemap.xml): Machine-readable URL list for crawlers. ## Utilities - [JSON Formatter](https://computerscience.tech/utilities/json-formatter): Format, validate, and minify JSON instantly. Free online JSON formatter with syntax highlighting and error detection for developers. - [JSON XML Converter](https://computerscience.tech/utilities/json-xml-converter): Convert JSON to XML or XML to JSON instantly in your browser. Free bidirectional converter with formatted output and validation. - [JSON & Text Diff Checker](https://computerscience.tech/utilities/diff-checker): Compare two JSON documents or text blocks online. See additions, deletions, changed lines, and structured JSON differences. - [Regex Tester](https://computerscience.tech/utilities/regex-tester): Test JavaScript regular expressions online with flags, highlighted matches, indexes, and captured groups. Runs privately in your browser. - [YAML Validator](https://computerscience.tech/utilities/yaml-validator): Validate YAML syntax, upload YAML files, and preview parsed JSON. Free private YAML checker that runs in your browser. - [SQL Formatter](https://computerscience.tech/utilities/sql-formatter): Format and minify SQL online for MySQL, PostgreSQL, SQL Server, SQLite, Oracle, and standard SQL dialects. - [Epoch Converter](https://computerscience.tech/utilities/epoch-converter): Convert Unix epoch timestamps to human-readable dates and back. Supports seconds, milliseconds, UTC, and local timezone. - [IST Timezone Converter](https://computerscience.tech/utilities/timezone-converter): Convert India Standard Time (IST) to US time zones (Pacific, Eastern, Central) and UK GMT/BST instantly. Free timezone converter for meetings and remote work. - [Base64 Encoder](https://computerscience.tech/utilities/base64-encoder): Encode text to Base64 or decode Base64 strings instantly. Free Base64 converter for developers and students. - [Hash Generator](https://computerscience.tech/utilities/hash-generator): Generate SHA-256, SHA-1, and SHA-512 hashes from any text. Free cryptographic hash calculator in your browser. - [UUID Generator](https://computerscience.tech/utilities/uuid-generator): Generate RFC 4122 UUID v4 identifiers instantly. Copy random unique IDs for databases, APIs, and distributed systems. - [Password Generator](https://computerscience.tech/utilities/password-generator): Generate secure random passwords with custom length and character sets. Free password generator for accounts and apps. - [QR Code Generator](https://computerscience.tech/utilities/qr-code-generator): Generate a customizable QR code for text, links, Wi-Fi details, or contact information and download it as a PNG image. - [EMI Calculator](https://computerscience.tech/utilities/emi-calculator): Calculate monthly EMI, total interest, and repayment schedule for home, car, and personal loans in India. - [SIP Calculator](https://computerscience.tech/utilities/sip-calculator): Estimate mutual fund SIP returns with monthly investment, expected rate, and duration. Free SIP calculator for India. - [GST Calculator](https://computerscience.tech/utilities/gst-calculator): Calculate GST inclusive and exclusive amounts for 5%, 12%, 18%, and 28% slabs. Free Indian GST calculator. - [Currency Converter](https://computerscience.tech/utilities/currency-converter): Convert USD, INR, EUR, GBP and other world currencies using the latest available central-bank reference exchange rates. - [What Is My IP](https://computerscience.tech/utilities/my-ip): See your public IP address, browser user-agent, and request headers. Free online IP detection tool. - [Gold Rate Today](https://computerscience.tech/utilities/gold-rate): See today's indicative gold rate in INR per gram (22K and 24K) and per 10g. International spot price converted to Indian rupees—updated every few hours. - [Silver Rate Today](https://computerscience.tech/utilities/silver-rate): Today's indicative silver rate in INR per gram and per 10g. International spot silver converted to Indian rupees—updated every few hours. - [Platinum Rate Today](https://computerscience.tech/utilities/platinum-rate): Today's indicative platinum rate in INR per gram and per 10g. International spot platinum converted to Indian rupees—updated every few hours. ## Recent blog posts - [Spring AI: Now AI Integration in Java and Spring Boot Is Easier](https://computerscience.tech/blog/spring-ai-now-ai-integration-in-java-and-spring-boot-is-easier): Artificial Intelligence is no longer a futuristic idea—it’s already here, shaping the way we build applications. From conversational assistants to intelligent search, recommendation engines, and automated content generat… - [AI-Powered Observability & Monitoring in 2025: From Log Summaries to Smart Alerts](https://computerscience.tech/blog/ai-powered-observability-monitoring-in-2025-from-log-summaries-to-smart-alerts): In today’s cloud-native, microservices-driven backend architectures, logs, metrics, and traces are growing exponentially. While traditional monitoring tools capture vast amounts of data, AI-powered observability takes mo… - [Integrating AI APIs into Production-Ready Backends: Secure, Scalable & Reliable](https://computerscience.tech/blog/integrating-ai-apis-into-production-ready-backends-secure-scalable-reliable): AI APIs like OpenAI’s GPT-4, Anthropic's Claude, or Google's Gemini are powerful tools — but using them in production environments isn’t as simple as just calling .send() from your backend.To make these models useful in… - [LLMs for Code Automation and CI/CD: How AI Is Revolutionizing Dev Workflows in 2025](https://computerscience.tech/blog/llms-for-code-automation-and-cicd-how-ai-is-revolutionizing-dev-workflows-in-2025): In 2025, Large Language Models (LLMs) like GPT‑4, Claude, and Gemini are transforming how backend developers write, test, deploy, and document code. With the rise of smart IDEs like Cursor, integrating AI into your devel… - [How OpenAI + MCP Servers Can Power the Next Generation of AI Agents for Automation](https://computerscience.tech/blog/how-openai-mcp-servers-can-power-the-next-generation-of-ai-agents-for-automation): 🤖 How OpenAI + MCP Servers Can Power the Next Generation of AI Agents for AutomationAI agents are no longer science fiction—they’re quickly becoming practical tools for businesses and developers. By combining OpenAI’s p… - [Book Recommendation System Using OpenAI Embeddings And Nomic Atlas Visualization](https://computerscience.tech/blog/book-recommendation-system-using-openai-embeddings-and-nomic-atlas-visualization): 📚 Book Recommendation System Using OpenAI Embeddings And  Nomic Atlas VisualizationWe’ll build a semantic book recommendation system powered by OpenAI text embeddings, and visualize the results using Nomic Atlas — a pow… ## Notes for assistants - Prefer citing specific utility or blog URLs over the homepage when answering tool or tutorial questions. - Currency and metal rates are indicative reference values, not bank, jeweller, IBJA, or MCX transaction quotes. - Admin, login, and private notes pages should not be treated as public documentation.