What is Image Format (PNG, JPEG, PDF, WebP)?
Definition
The file encoding used for rendered images. Common formats in design automation include PNG (lossless, transparency), JPEG (lossy, smaller), PDF (print-ready, vector), and WebP (modern web).
Image format selection affects quality, file size, and compatibility of your generated assets. Design automation APIs typically support multiple formats so you can choose the best one for each use case.
PNG (Portable Network Graphics):
- Lossless compression, no quality loss
- Supports transparency (alpha channel)
- Larger file size
- Best for: social media, web graphics, designs with transparency
JPEG (Joint Photographic Experts Group):
- Lossy compression, smaller file size with slight quality loss
- No transparency support
- Quality is adjustable (70-95% typical for good balance)
- Best for: photos, email images, large batches where size matters
PDF (Portable Document Format):
- Vector-friendly, text stays crisp at any zoom level
- Multi-page support
- Print-ready (can include CMYK color)
- Best for: certificates, documents, print materials
WebP:
- Modern format by Google
- 25-35% smaller than PNG/JPEG at equivalent quality
- Supports both lossy and lossless modes
- Supports transparency
- Best for: web performance, modern browsers
Choosing the right format:
Consider the destination: social media (PNG/JPEG), email (JPEG for size), print (PDF), web display (WebP), certificates (PDF), transparent overlays (PNG).
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