SVG vs PNG: Which Should You Use?
SVG and PNG both handle crisp graphics with transparent backgrounds, which is why they get compared. But they store images in completely different ways, and that decides almost everything: SVG describes shapes, PNG records pixels. Once you know which kind of image you have, the choice usually makes itself.
Vector vs raster in one example
Picture a red circle. A PNG stores it as a grid of colored squares: at 200×200 that is 40,000 pixels, each one red, white or a blended edge color. An SVG stores it as a line of text, roughly <circle cx="100" cy="100" r="80" fill="red"/>. Scale the PNG to 2000×2000 and the browser has to invent the missing pixels, so edges go soft and blocky. Scale the SVG and the browser simply draws a bigger circle, perfectly sharp at any size.
SVG vs PNG at a glance
| SVG | PNG | |
|---|---|---|
| Type | Vector: shapes, paths and text described in XML | Raster: a fixed grid of pixels, compressed losslessly |
| Scaling | Sharp at every size and on every screen density | Sharp at its native size; blurry when enlarged |
| File size | Tiny for simple graphics; huge for complex ones | Grows with pixel dimensions and detail |
| Photographs | Not suitable | Possible, but JPEG or WebP is far smaller |
| Transparency | Yes | Yes, full alpha channel |
| Editable as code | Yes: recolor with CSS, animate, embed text | No |
| Support outside browsers | Patchy: many email clients, office apps and upload forms reject it | Universal |
When SVG wins
- Logos. One file serves the favicon, the header and the billboard, always sharp. A typical logo SVG is a few kilobytes.
- Icons. Interface icons in SVG can inherit the text color with
fill="currentColor", so one icon works in light mode, dark mode and on hover without extra files. - Charts, diagrams and illustrations made of flat shapes. They stay crisp on high-density phone screens, where a PNG needs to be exported at 2× or 3× to look as sharp.
- Anything you want to animate or restyle with CSS or JavaScript.
When PNG wins
- Screenshots. They are pixels by nature; there are no shapes to describe. PNG keeps the text sharp, which JPEG does not.
- Complex artwork with gradients, textures, shadows or thousands of paths. An SVG traced from a detailed image can be ten times larger than the equivalent PNG and slow to render.
- Anywhere outside a browser. Email signatures, Word and PowerPoint documents, social media uploads, marketplace listings and most CMS image fields expect PNG or JPEG. Gmail, for example, does not display SVG images in messages.
- User uploads. SVG is a document format that can contain scripts and external references, so many platforms block SVG uploads for security reasons. PNG carries no such risk.
File size: it depends on complexity
A simple logo might be 2 KB as SVG and 15 KB as a 512-pixel PNG; the SVG wins and keeps winning as the PNG gets bigger. A detailed map or an illustration with painterly textures can flip that around, because every curve has to be written out as coordinates. If an SVG is unexpectedly heavy, it was probably exported with editor metadata or auto-traced from a bitmap. Running it through an optimizer such as SVGO often cuts the size by half; if it is still large, a PNG or WebP is likely the better delivery format.
Using both: SVG as the master, PNG as the export
The most practical setup for logos and icons is to keep the SVG as the source of truth and export PNGs wherever SVG is not accepted. The SVG to PNG Converter renders an SVG at any scale right in your browser, so you can produce a 1024px PNG for a social profile and a 64px one for an email signature from the same file. For a website icon, the Favicon Generator builds the ICO and PNG sizes browsers and phones ask for. Modern browsers can use an SVG favicon too, but keep the PNG and ICO fallbacks for older browsers and home-screen icons.
Going the other way, from PNG to SVG, is not a conversion but a tracing job. Tracing tools guess shapes from pixels, which works for simple high-contrast logos and badly for anything else. If you have only a PNG of your logo, it is usually worth asking the designer for the original vector file.
What about JPEG and WebP?
They are raster formats like PNG, but lossy, and they exist for photographs. A photo should never be an SVG, and rarely a PNG. Our guide to PNG vs JPEG vs WebP covers the raster side of the decision in detail.
The rule of thumb
If it was drawn, use SVG on the web and export PNG for everywhere else. If it was captured, such as a screenshot, a scan or a photo, it is raster: PNG for screenshots and graphics with sharp edges, JPEG or WebP for photos.