SVG and EPS are both vector formats — both store images as scalable drawing instructions rather than fixed pixels, which is exactly why both can be resized to any dimension with zero quality loss. Where they diverge is the world each one was actually built for: SVG for the web, EPS for professional print production.
What both formats share
Since neither SVG nor EPS stores a fixed grid of pixels, both can be scaled up or down to any size — a small icon or a massive billboard print — without the blurring or pixelation a raster format like PNG or JPG would show at extreme scale. This is the core advantage of vector graphics generally, and it's shared equally between the two formats; neither has an edge over the other purely on scalability.
SVG: built for the modern web
SVG is based on XML, is natively readable and renderable by every modern web browser without any additional plugin or software, and can be styled and even animated directly using web technologies like CSS and JavaScript. This native browser support is SVG's defining advantage — it can be embedded directly in a webpage and rendered instantly, which is exactly why SVG became the standard vector format for web-based logos, icons, and illustrations.
EPS: built for professional print workflows
EPS (Encapsulated PostScript) predates SVG by years and has long been the standard vector format in professional print and design software — Adobe Illustrator, professional printing workflows, and print-focused design pipelines are all built around strong EPS support. EPS supports certain print-specific features, like CMYK color (the color model professional printing actually uses, distinct from the RGB used on screens) more comprehensively than SVG typically does, which matters directly for print production quality.
Why browsers don't open EPS files
Web browsers have no native EPS support at all — attempting to open an EPS file directly in a browser typically fails or shows nothing useful, since EPS was never designed with web rendering in mind the way SVG explicitly was. This is the single most common practical problem people run into: a beautifully vector-perfect EPS logo file from a print designer simply won't display on a website without first being converted to a browser-native format.
A practical way to decide
For anything web-based — a website logo, an icon, an illustration meant to display in a browser: SVG is the correct, natively supported choice. For professional print production — business cards, large-format printing, anything going through a print shop's workflow, particularly where CMYK color accuracy matters: EPS remains the standard in that world, and print professionals will generally expect it. If you've received an EPS file specifically for use on a website, it needs to be converted first — browsers simply won't render it as-is.
SVG to PNG and the image converter handle bringing vector graphics into web-ready raster formats when a browser-native SVG isn't directly available and a flattened image is what's actually needed for the destination.