PNG Image Format

PNG (Portable Network Graphics) is a lossless image format created in 1996 as a free, open-source alternative to GIF. Unlike JPG, PNG preserves every pixel of your image exactly as-is, with no quality loss from compression.

The format's standout feature is full alpha channel transparency. This means pixels can be partially transparent, enabling smooth edges and shadows that blend seamlessly with any background.

PNG is the right choice when you need:

• → Transparency — Logos, icons, or images that need to blend with backgrounds
• → Sharp edges and text — Screenshots, diagrams, UI elements
• → Lossless quality — Graphics that will be edited multiple times
• → Flat colors — Illustrations, logos, and graphics with solid color areas

PNG isn't ideal for every situation:

• × Larger file sizes — Photos in PNG are much larger than JPG equivalents
• × Not for photographs — JPG or WebP compress photos more efficiently
• × No native animation — APNG exists but has limited support; use GIF or WebP instead
• × Overkill for simple graphics — Small icons may be better as SVG

When working with PNG transparency:

• → Converting to JPG removes transparency — Choose a background color or it defaults to white
• → Semi-transparent pixels — PNG supports 256 levels of transparency per pixel
• → Preserve transparency — WebP also supports alpha channels if you need smaller files