PNG vs SVG — Differences, File Size & When to Use Each

PNG vs SVG

A detailed comparison of PNG Image and SVG Vector Image — file size, quality, compatibility, and which format to choose for your workflow.

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PNG

PNG Image

Raster & Vector Images

PNG is a lossless image format that supports transparency. It is ideal for graphics, logos, screenshots, and any image where preserving exact pixel data is important.

About PNG files

SVG

SVG Vector Image

Raster & Vector Images

SVG is an XML-based vector image format that scales to any resolution without quality loss. It is the standard for web icons, logos, and illustrations that need to look sharp on all screen sizes.

About SVG files

Strengths Comparison

PNG Strengths

Lossless compression — every save preserves the original pixels perfectly.
Full 8-bit alpha channel for smooth transparency.
Excellent for text, UI screenshots, logos, and line art.
Royalty-free and an ISO standard (ISO/IEC 15948).
Supports 16-bit color depth for high-fidelity work.

SVG Strengths

Resolution-independent — crisp at any size, from 16px icon to 4K billboard.
Tiny file sizes for flat graphics, logos, and UI illustrations.
Editable with any text editor; programmatically manipulable via DOM.
Supports interactivity, CSS styling, and JavaScript inside the image.
Accessible — text inside SVG is readable by screen readers.

Limitations

PNG Limitations

Much larger than JPEG for photographs (no perceptual compression).
No native animation in most software (APNG support is inconsistent).
No CMYK support — web and screen only, not print.
Metadata capabilities are less rich than JPEG's EXIF.

SVG Limitations

Not suitable for photographs or complex raster imagery.
Uploading user-provided SVG is risky — embedded scripts are an XSS vector.
Complex SVGs with thousands of paths render more slowly than a PNG equivalent.
Inconsistent rendering across browsers for edge-case features (filters, gradients).
No native concept of layers or groups for design-tool round-tripping.

Technical Specifications

Specification	PNG	SVG
MIME type	image/png	image/svg+xml
Compression	Lossless — DEFLATE (zlib)	Gzipped variant is .svgz
Color depth	1, 2, 4, 8 or 16 bits per channel	—
Max dimensions	2^31 − 1 pixels per side (2.1 billion)	—
Transparency	Full 8-bit alpha channel	—
Standard	ISO/IEC 15948:2004	—
Format	—	XML (text-based)
Current version	—	SVG 2 (W3C Recommendation, 2018)
Resolution	—	Unlimited (vector)
Animation	—	SMIL, CSS, JavaScript

Typical File Sizes

PNG

Icon or small logo 2–20 KB
UI screenshot (1920×1080) 200–800 KB
High-res photo (12 MP) 10–30 MB
Print-ready illustration 5–50 MB

SVG

Simple icon 200 B – 2 KB
Company logo 2–10 KB
Complex illustration 20–100 KB
Data-visualization chart 50–500 KB

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Frequently Asked Questions

PNG (Portable Network Graphics) is a lossless raster image format created in 1996 as a patent-free alternative to GIF. It supports transparency, making it ideal for logos, icons, and web graphics.

PNG (Portable Network Graphics) is a sem perdas raster image formato created in 1996 como um patent-free alternative to GIF. It suporta transparência, making it ideal para logos, icons, e web graphics.

PNG files open natively in all modern operating systems, web browsers, and image editors including Photoshop, GIMP, Paint.NET, and Canva.

PNG arquivos abrir natively in all moderno operating systems, web browsers, e image editors including Photoshop, GIMP, Paint.NET, e Canva.

WebP offers 26% smaller file sizes than PNG with equivalent quality. Use WebP for web delivery when browser support is sufficient. Use PNG when maximum compatibility or professional editing workflows are needed.

WebP oferece 26% smaller tamanho do arquivos than PNG com equivalent quality. usar WebP para web delivery when browser support is sufficient. usar PNG when máximo compatibilidade ou profissional editando workflows are needed.