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HEIC vs JPG vs WEBP: Which Image Format is Best?

2026-05-06 3 min readBy Pixlush Team

If you have ever tried to upload a photo from your iPhone to a website and received an "Unsupported File Type" error, you have experienced the image format war firsthand.

With so many acronyms—JPG, PNG, HEIC, WEBP, AVIF—it can be overwhelming to know which file type you should actually be using. In this guide, we break down the big three formats and tell you exactly when to use each.

1. JPG (JPEG): The Universal Standard

Created in the 1990s, the Joint Photographic Experts Group (JPG/JPEG) format is the undisputed king of digital images.

  • The Good: Absolute universal compatibility. Every browser, operating system, app, and smart fridge on Earth can open a JPG. It provides excellent lossy compression for photographs.
  • The Bad: It is an older algorithm. It cannot handle transparent backgrounds, and compared to modern formats, it requires larger file sizes to maintain the same level of quality.
  • When to use it: When compatibility is your number one priority. If you need to guarantee a file will open for a client or on an older system, use JPG.

2. HEIC (High-Efficiency Image Container)

Apple introduced HEIC as the default photo format for iPhones in iOS 11. It uses advanced HEVC video compression algorithms applied to still images.

  • The Good: It stores incredible quality at roughly half the file size of an equivalent JPG. It can also store multiple images in one file (like Live Photos) and supports transparency.
  • The Bad: Poor compatibility outside the Apple ecosystem. Many Windows computers, Android devices, and web platforms cannot natively view HEIC files.
  • The Fix: If you have HEIC photos from your iPhone that you need to upload to a website, you can easily convert them using our free HEIC to JPG Converter.

3. WEBP: The Web Standard

Developed by Google specifically to make the internet faster, WEBP is the modern standard for web developers and designers.

  • The Good: Unbeatable compression for the web. WEBP files are typically 25% to 35% smaller than JPGs of the same quality. It supports both lossy and lossless compression, and it supports transparent backgrounds (replacing PNGs).
  • The Bad: Older software (like legacy versions of Photoshop or very old browsers) might struggle with it, though modern browser support is now nearly 100%.
  • When to use it: If you run a website or a blog, all your images should be WEBP. It will drastically improve your SEO and page load speeds. You can bulk convert your existing library using our JPG to WEBP tool.

Summary

  • Shooting photos on an iPhone? Keep them in HEIC to save space.
  • Sending files to clients or uploading to legacy systems? Convert them to JPG using our PNG to JPG or WEBP to JPG tools.
  • Building a website or writing a blog? Always optimize and convert your assets to WEBP for maximum performance.