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Production-Ready Tools
Tools Used by Developers Worldwide
Clipboard Image Downloader - Save Copied Images to File
Paste images from your clipboard and immediately download them as PNG, JPEG, or WebP files.
EPUB to PDF Converter - Free, Private, In-Browser
Convert EPUB ebooks to PDF instantly in your browser. No file upload, no account needed. Preserves text, images, and formatting from any EPUB file.
Free Online PDF to SVG Converter
Convert PDF pages into high-quality vector SVG files directly in your browser. Extract clean XML markup, vector paths, and downloadable ZIP archives.
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Latest Engineering Articles
Discover how to use `pyproject.toml` to create, manage, and distribute Python packages for modern Python development. This comprehensive guide covers everything from build systems to dependency management and best practices for modern Python development.
Learn how to use the `__main__.py` file to make your Python packages executable. This guide covers the purpose of `__main__.py`, how it differs from `__init__.py`, and best practices for creating command-line interfaces in 2026.
A comprehensive guide to `__init__.py` in Python packages. Learn its core purpose, the hoisting pattern, package security with __all__, namespace packages, and 2026 best practices.
About Serhii Hrekov
I'm a Senior Software Engineer & System Architect specializing in Python, high-performance web backends, and cloud infrastructure (AWS, GCP). Currently working at nCube and Modigie, I created this platform to document real-world engineering solutions, production APIs, and developer tools.