Overview
Introduction
This tool wraps a PNG's raw bytes inside a real SVG document, using the standard technique of embedding a base64 data URI in an <image> element.
It reads only the PNG's IHDR chunk to determine width and height, so it never needs to decode pixels through a canvas.
What Is PNG to SVG Converter?
A byte-level converter that validates the 8-byte PNG file signature, parses the big-endian width and height fields straight out of the first chunk (IHDR), and builds a minimal but fully valid SVG wrapper around the original PNG bytes.
The result is genuine SVG XML that any SVG-capable renderer (browsers, image editors, SVG libraries) can open, with the raster image embedded rather than referenced externally.
How PNG to SVG Converter Works
After confirming the PNG signature and locating IHDR immediately after it, the tool reads a 4-byte big-endian width at byte offset 16 and a 4-byte big-endian height at offset 20.
The full original file is then base64-encoded and placed in a data:image/png;base64,... URI, which becomes the href (and xlink:href, for older renderers) of a single <image> element sized to match the parsed dimensions.
When To Use PNG to SVG Converter
Use it when a tool or platform requires an .svg file extension but you only have a raster PNG to hand.
It's also handy for embedding a small raster icon inline inside other SVG artwork as a single self-contained file with no external image reference.
Often used alongside PNG to Base64 Converter, PNG to PDF Converter and PNG Dimensions Finder.
Features
Advantages
- Produces a real, valid SVG document, not a renamed or fake file.
- No canvas or pixel decoding needed — width/height come directly from the PNG header, so it works on very large images without a decode step.
- Self-contained: the image data travels with the SVG file, no external references to break.
Limitations
- This does not vectorize the PNG — there are no paths, shapes, or true vector curves in the output, only an embedded raster image inside an SVG wrapper.
- Base64 encoding increases file size by roughly a third compared to the original PNG.
- Zooming in on the embedded raster still shows pixelation, unlike a genuinely vector-traced SVG.
Examples
Best Practices & Notes
Best Practices
- Use this when you specifically need an .svg container, not when you want true scalable vector artwork — for that, trace the image with dedicated vectorization software.
- Keep the source PNG reasonably sized, since the entire file is embedded inline and inflates the resulting SVG's size.
Developer Notes
The IHDR offsets are fixed by the PNG spec (8-byte signature + 4-byte chunk length + 4-byte "IHDR" tag = byte 16), so width/height are read with plain bitwise big-endian Uint32 reads rather than a general chunk parser; the same Node-and-browser-safe base64 helper pattern from png-to-base64-converter.ts is reused for the data URI.
PNG to SVG Converter Use Cases
- Producing an SVG-wrapped raster asset for a CMS or design tool that requires .svg uploads
- Embedding a small PNG icon as a single self-contained SVG file with no external references
- Giving a raster image a declared viewBox for consistent scaling in SVG-based layouts
Common Mistakes
- Expecting the output to be a true vector trace with editable paths — it's a raster image inside an SVG wrapper.
- Assuming the file will be smaller than the source PNG — base64 encoding always makes it larger.
Tips
- If you need genuine vector shapes (for infinite zoom without pixelation), use a dedicated image-tracing tool instead of this wrapper.
- The dual href/xlink:href attributes maximize compatibility, but modern renderers only need href.