Image URL Builder

This tool generates parameterized image URLs from a base image path to support consistent delivery across CDNs, sites, and apps. It is used by frontend developers, DevOps, SEO specialists, and marketing teams when images must be resized, reformatted, or delivered with controlled quality. The resulting URL encodes size, format, and delivery options in a predictable order, enabling caching, consistent rendering, and easier testing. Example: base_url/img.jpg with w=800, h=600, fmt=webp, q=80 yields a shareable, cache-friendly link suitable for production pages and previews.
Conceptual workflow: the tool validates inputs, normalizes the image path, URL-encodes values, and assembles a query string in a canonical sequence (w, h, fmt, q, dpr, fit, crop, auto). It supports required inputs (base_url and image_path) and optional parameters (width, height, format, quality, DPR, fit, crop). Advanced presets map to common CDN profiles (thumbnail, web-optimized, print).
Outputs are a final URL string and a separate query-string representation for logging or testing. Validation ensures numeric bounds (e.g., 1–100 for quality), and encoding prevents invalid characters. Error handling covers missing base_url or image_path, non-numeric sizes, unsupported formats, and preexisting query strings on the base URL. The tool adheres to RFC 3986 URL encoding and standard CDN parameter conventions; no image processing occurs.