Image format guides

Practical, specific answers to the questions people actually have about image formats — not just how to convert between them, but why one format works better than another for a given job.

• PNG vs JPG vs WEBP vs GIF vs HEIC vs BMP: Which Image Format Should You Use?

  A practical, format-by-format guide to when to use PNG, JPG, WEBP, GIF, HEIC, or BMP — and when it's worth converting between them.

• Why Won't My iPhone Photos (HEIC) Open on Windows?

  Why HEIC photos fail to open outside Apple devices, and the fastest ways to fix it without installing anything.

• How to Reduce an Image's File Size Without Losing Quality

  Practical, concrete techniques — format choice, compression, resizing — for shrinking image files while keeping them sharp.

• What Is WEBP and Why Do So Many Websites Use It?

  What the WEBP image format is, how it compares to JPG and PNG, and why it's become the default format for modern websites.

• Transparent Backgrounds: PNG vs WEBP vs GIF

  Which image formats actually support transparency, what happens to it during conversion, and which format to pick for logos, icons, and graphics.

• Best Image Format for Website Performance and SEO

  How image format choice affects Core Web Vitals and search ranking, and a practical format checklist for web images.