What is SVG?

SVG (Scalable Vector Graphics) is a format for images built from mathematical shapes and lines rather than pixels. Open an SVG logo at tiny thumbnail size or giant poster size — it looks crisp and sharp at any scale. This makes SVG the ideal format for logos, icons, diagrams, and any graphic that needs to look perfect on a phone screen and a billboard. Unlike raster formats like PNG and JPG, SVGs never blur or pixelate when enlarged.

Vector vs raster — the core difference

Raster images (PNG, JPG, GIF) are built from pixels — tiny colored squares arranged in a grid. If you zoom in too far, the pixels become visible and the image looks blurry or jagged. When you enlarge a PNG photo, you're stretching pixels, which ruins quality. Vectors work differently. SVG images are built from mathematical equations that describe shapes. A circle is stored as "center point (100, 100), radius 50" rather than thousands of individual pixels. When you scale a vector image, the equations recalculate, so the shape stays perfectly sharp at any size.

When to use SVG instead of PNG

Use SVG if: You're designing logos, icons, or illustrations that need to appear on websites, apps, or print materials at various sizes. You want a single file that looks perfect on a phone (320px wide) and a desktop monitor (1920px wide). You need small file sizes — SVG files are often tiny because they're just text describing shapes. You're building interactive graphics or animations on the web. Use PNG if: You're working with photographs or complex images with millions of colors and fine details. You need compatibility with older software. You're exporting from Photoshop with many layers and effects.

How SVG works as code

SVG is actually XML — it's text-based. If you open an SVG file in a text editor, you'll see code describing circles, rectangles, paths, and lines. For example: <circle cx="100" cy="100" r="50" fill="red" /> draws a red circle. This text-based nature means SVGs are tiny (a logo might be just 2–5 KB), searchable by search engines, and fully accessible to screen readers. You can edit SVGs by hand in a text editor or with design tools like Figma, Adobe Illustrator, or Inkscape.

SVG on the web

SVG has excellent browser support across all modern browsers. Every website that uses a scalable logo uses SVG. Designers use SVG for: animated icons that respond to user interaction, interactive maps and diagrams, responsive graphics that adapt to screen size, and data visualizations. SVGs can be embedded directly in HTML, loaded as image files, or animated with CSS and JavaScript.

Limitations of SVG

SVG excels at logos, icons, and illustrations, but struggles with photorealistic images. A photograph of a sunset has millions of colors and fine details — converting it to SVG would require millions of vector shapes, making the file huge and unmanageable. Cameras don't output SVG either; they output JPEG or PNG. Additionally, some complex design effects and gradients can be difficult to implement in SVG, though modern SVG supports a wide range of features.

Editing and converting SVG

How to edit SVG files

Professional designers use Figma (cloud-based, collaborative), Adobe Illustrator (industry standard, paid), or Inkscape (free, open-source). If you're comfortable with code, you can edit SVGs directly in any text editor. For simple conversions between vector and raster formats, OnlyFiles provides instant conversion without downloading software. Many online tools also offer SVG editing, though they're often limited compared to desktop software.