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My Apps & Projects

Driven by natural curiosity, I’ve built and launched a wide variety of projects across different domains - from backend automation to Telegram bots and browser extensions.

  • JWT Secret Key Generator - A specialized developer tool for generating high-entropy secret keys for JWT signing with multi-format support.
  • Strong Password Generator - A secure microservice for generating highly random and strong passwords with full control over character sets and length.
  • QR Code Generator - A microservice for generating standard QR codes via a simple API.
  • Barcode Generator - A microservice for generating various types of barcodes via a simple API.
  • Link Redirect Tracer - A fast, accurate tool to trace the full, step-by-step path of any redirected or shortened URL.
  • Domain Lookup Tools(WHOIS & DNS Information) - A comprehensive web tool for instant WHOIS, registration, expiration, and technical DNS status lookups.
  • Keep Scrolling - YouTube Shorts Auto-Scroller Documentation - Google chrome extension - Automatically scrolls through YouTube Shorts videos with intelligent controls and user-friendly features.
  • Image Comparison Creator - Free browser-based tool to combine two images side-by-side with Before/After, VS, Now/Then, or custom text labels.
  • Before-After Creator - This tool has been merged into the Image Comparison Creator.
  • Versus Image Creator - This tool has been merged into the Image Comparison Creator.
  • Online GZIP Compressor - A client-side web tool for fast and private GZIP compression and decompression of files in your browser.
  • PasteDownloader - A simple web tool that allows you to download images directly from your clipboard by pasting them.
  • ShrinkItPlease - Compress your images seamlessly with a simple drag-and-drop. It's fast, efficient, and dev-friendly.Reduce the weight of image up to 90%
  • RandomStringGenerator - A microservice for generating random strings with customizable options such as length, character types, and spaces.
  • NoBackgroundPlease - A fast, seamless microservice for removing image backgrounds via API and interactive UI.
  • MetaCard - Metacard is an API service for generating dynamic, social-media-ready thumbnail images for blogs and websites. API included.
  • Base64_transform_bot - A Telegram bot offering Base64 encoding/decoding, quote replacement, curl-to-Python conversion, JSON formatting, and YouTube utilities for developers.
  • Building InstaResizerBot: Scalable Image Resizing for Instagram on Telegram Infrastructure - Technical architecture, Pillow canvas math, and state handling behind InstaResizerBot, a Python Telegram bot built for Instagram aspect ratio fitting.
  • Kick_and_ban_all_members_bot - A Telegram moderation bot for bulk purging regular group members using MTProto streaming, temporary bans, and FloodWait auto-recovery.
  • Post from Telegram to WordPress Bot - Automated Python server tool to publish blog posts and media directly from Telegram channels and chats to WordPress via REST API.
  • ResponseWithBarcodeBot - Generates barcodes from user input directly in Telegram chats using python-barcode and in-memory BytesIO buffers.
  • ResponseWithQrBot - Generates high-resolution QR codes from user input directly in Telegram chats using python-qrcode, Pillow resampling, and in-memory BytesIO streams.
  • Hrekov.com Project - Hrekov.com is a comprehensive project focused on building a modern, scalable web platform. It serves as a showcase for innovative web technologies, best practices, and personal development in software engineering.
  • Expose Waylight /me Endpoint Chrome Extension - Developer Chrome extension designed to inspect active Waylight session contexts, extracting headers, user IDs, and endpoint payloads for rapid API debugging.
  • Serhii Telegram Bots Empire - Suite Architecture & Directory - Technical architectural guide, engineering decisions, and complete directory of the Serhii Telegram Bots Empire ecosystem, built by Serhii Hrekov featuring specialized developer bots for data transformation, QR/barcode generation, media processing, and central hub management via @serhiixxxbot.
  • Ddnames - Dynamic Domains for IoT Devices - A platform for managing dynamic domain names, tailored for IoT devices and personal infrastructure based on API, JSON, and PowerDNS.
  • Serhii Talks - Centralized Content Persistence & Telegram Broadcast Architecture - Comprehensive technical architecture and implementation details of serhiiTalks, an automated content aggregation and database fallback pipeline built by Serhii Hrekov with Python, FastAPI, PostgreSQL (Neon), Celery, and Redis.
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