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Guide
How Lossless PNG Compression Works
PNG optimization can remove redundant data without changing decoded pixels.
PNG.now Blog
Guides, Tips & How-Tos for Images
Step-by-step guides on converting, compressing, and editing images. No jargon, no fluff, just what works.
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Guide
PNG to ICO: Creating a Windows Icon or Favicon
ICO files may contain several square image sizes for different display contexts.
Guide
How to Combine or Convert PNG Images to PDF
PDF is convenient for sharing or printing images as pages.
Guide
PNG to AVIF: Modern Compression for Graphics
AVIF can deliver small files but encoding and compatibility tradeoffs matter.
Guide
PNG vs JPG: Transparency, Quality, and File Size
PNG is lossless and supports alpha transparency; JPG is compact for continuous-tone photography.
Quick Format Guides
Short answers to common image format questions. Part of our full FAQ.
JPG vs PNG: Which Format Should You Use?
When to use each format, file size differences, and what transparency means for your choice.
JPG vs WebP: Size, Quality and Browser Support
WebP is smaller but not universally supported. Here is when that matters and when it does not.
HEIC vs JPG: Apple's Format vs the Standard
Why your iPhone shoots HEIC, what it means for Windows users, and how to convert.
JPG Compression Guide: Quality vs File Size
What quality setting to use, how much size you can save, and when compression hurts your image.
How to Convert JPG to PDF (Including Multi-Page)
Combine multiple JPG images into a single PDF, or convert one image to a shareable document.
RAW to JPG: Converting Camera Raw Files
How to convert NEF, CR2, ARW and other RAW formats to JPG without losing too much quality.