HEIC vs JPG vs PNG vs WebP: Which Image Format Should You Use?

Choosing the right image format can make the difference between a 10 MB photo that won’t upload and a 1 MB file that looks just as good. Here’s a no-nonsense comparison of the four most common formats you’ll encounter in 2025.

The Quick Answer

Format	Best For	Typical Size (12MP)	Transparency	Browser Support
HEIC	iPhone storage	1.5-2 MB	✅	❌ Limited
JPG	Sharing everywhere	3-4 MB	❌	✅ Universal
PNG	Screenshots, graphics	8-15 MB	✅	✅ Universal
WebP	Web performance	2-3 MB	✅	✅ Modern browsers

HEIC: Apple’s Space Saver

HEIC uses the HEVC (H.265) codec — the same technology used for 4K video compression. The result? Photos that are 40-50% smaller than JPG with no visible quality loss.

Pros:

• Smallest file size for photos
• Supports 16-bit color depth (vs JPG’s 8-bit)
• Can store depth maps, bursts, and Live Photos in one file
• Lossless compression option available

Cons:

• Poor compatibility outside the Apple ecosystem
• Windows requires a codec extension to view
• Most social media platforms re-encode uploads anyway

When to use: Keep HEIC as your iPhone’s capture format for storage efficiency. Convert to JPG when sharing.

JPG: The Universal Standard

Created in 1992, JPG remains the most widely supported image format in existence. Every device, browser, app, and social platform handles JPG without question.

Pros:

• Universal compatibility — works literally everywhere
• Adjustable quality/size trade-off
• Mature ecosystem of tools and editors
• Fast encoding and decoding

Cons:

• Lossy compression (quality degrades each time you re-save)
• No transparency support
• Larger files than HEIC or WebP at equal quality
• Limited to 8-bit color

When to use: Sharing photos with anyone, uploading to social media, email attachments.

PNG: Pixel-Perfect Preservation

PNG uses lossless compression, meaning every pixel is preserved exactly. This makes it ideal for graphics, but massively overkill for photographs.

Pros:

• Truly lossless — zero quality loss
• Full transparency support (alpha channel)
• Perfect for text, screenshots, and sharp edges
• No generation loss when editing

Cons:

• Huge file sizes for photos (5-10× larger than JPG)
• Slow to encode/decode at high resolutions
• No quality slider — it’s always lossless

When to use: Screenshots, logos, UI mockups, any image with text or sharp edges. Convert HEIC to PNG when you need transparency.

WebP: Google’s Modern Hybrid

WebP was designed by Google specifically for the web. It supports both lossy and lossless compression, transparency, and even animation — making it a versatile all-rounder.

Pros:

• 25-35% smaller than JPG at equal quality
• Supports transparency (unlike JPG)
• Supports animation (like GIF, but much smaller)
• Excellent browser support since 2020

Cons:

• Not ideal for printing workflows
• Some older systems and apps don’t support it
• Less tool support than JPG

When to use: Web publishing, blogs, e-commerce product photos. Convert HEIC to WebP for your website.

The Rising Star: AVIF

Worth mentioning is AVIF — the newest format based on the AV1 video codec. It offers 30-50% smaller files than WebP and supports HDR, wide color gamut, and transparency.

AVIF is still gaining adoption, but major browsers (Chrome, Firefox, Safari 16+) already support it. If you’re optimizing for web performance, consider converting your JPGs to AVIF.

Recommendation

For most people, the workflow is simple:

1. Shoot in HEIC on your iPhone (smaller files, better quality)
2. Convert to JPG for sharing with non-Apple users
3. Convert to WebP or AVIF for web publishing
4. Use PNG only for graphics, screenshots, or when you need transparency

Every conversion on iheic.com happens locally in your browser — your photos never leave your device.