Comparison
SVG vs PNG: which should you use?
The two formats solve different problems. SVG describes shapes with coordinates and curves; PNG stores a fixed grid of pixels. Here is how they compare on scaling, size, transparency, and editing — and a simple rule for picking one.
Updated 2026-08-05
Shapes versus pixels
SVG describes artwork with paths, coordinates, fills, and strokes. PNG stores a fixed grid of pixels. That difference determines how each format scales, how it is edited, and which type of artwork it handles efficiently.
SVG is usually the better choice for logos, icons, diagrams, and flat illustrations. PNG is usually better for screenshots, paintings, and photographs with continuous tonal detail.
Scaling and visual quality
An SVG can render sharply at any size because the browser redraws its geometry for the available pixels. A PNG remains tied to its exported dimensions and becomes soft or blocky when enlarged beyond them.
For photographs, vector scaling is not automatically an advantage. Tracing a photograph converts subtle color changes into many separate shapes, often reducing fidelity while increasing complexity.
File size and editing
A simple icon may be dramatically smaller as SVG, while a detailed photograph may create an enormous SVG. File size depends on the number and complexity of regions, not merely on the file extension.
SVG paths and colors can be edited in vector software and, when embedded appropriately, styled with CSS. PNG editing remains pixel-based and does not preserve independent shapes.
A practical rule
Use SVG when the image can be explained as a manageable collection of shapes. Use PNG when individual pixels and subtle tonal variation are the content. Keep raster fallbacks only where the destination does not accept SVG.
Frequently asked questions
Is SVG better quality than PNG?
For artwork made of shapes, yes — an SVG renders sharply at every size and pixel density, while a PNG is fixed to the resolution it was exported at. For photographs the comparison inverts: a photograph traced into vector paths loses fine detail and usually produces a larger file than the PNG it came from.
Which format has smaller files?
It depends entirely on the content. A flat icon is often a few hundred bytes as SVG versus several kilobytes as PNG. A photograph is the opposite by a wide margin, because every subtle tonal change becomes another path. The dividing line is roughly the number of distinct regions in the image.
Do both formats support transparency?
Yes. PNG carries a full 8-bit alpha channel, and SVG leaves any area you did not draw simply empty. Note that converting a PNG here flattens transparency during tracing, so prepare the image against the background you want before converting.
Is SVG safe to use on a website?
Yes, and every current major browser has supported it for well over a decade. One caveat worth knowing: SVG is markup and can contain scripts, so files from untrusted sources should be sanitized before being served inline.
Can I convert a PNG into an SVG?
You can trace one, which is different from converting a document format. Tracing reads the pixel grid and fits vector outlines around regions of similar color. It works well for icons, logos, and flat illustrations, and poorly for photographs. Renaming a .png to .svg produces a file nothing can open.
Should I ship SVG or PNG for my icons?
SVG, in nearly every case. One file replaces the @1x, @2x, and @3x exports, stays sharp on any display, and can be recolored with CSS. Keep a PNG fallback only for contexts that genuinely reject SVG, such as some email clients and older CMS upload filters.