PNG vs JPG vs WebP vs HEIC vs AVIF: Which Image Format Is Best? (2026)

Published on May 17, 2026 · Updated May 29, 2026 · 10 min read

Quick Answer: Which Should You Use?

• For modern websites: AVIF — ~50% smaller than JPG, supported in all major browsers
• For maximum compatibility: JPG — universal support, acceptable everywhere
• For iPhone photos: HEIC — Apple's native format, best storage efficiency for personal libraries
• For graphics with transparency: PNG — lossless, pixel-perfect, and universally supported

What Are These Formats?

JPG (JPEG)

Created in 1992, JPG is the most widely used image format in the world. It uses lossy compression to reduce file sizes while maintaining acceptable visual quality. Virtually every device, browser, and application supports JPG. It's the universal fallback — when in doubt, JPG works.

PNG (Portable Network Graphics)

Created in 1996 as a replacement for GIF, PNG uses lossless compression — meaning no quality is lost when you save. It supports transparency (alpha channel), making it the go-to format for logos, icons, screenshots, and graphics with sharp edges. The tradeoff: file sizes are significantly larger than lossy formats. PNG is not designed for photos.

WebP

Developed by Google in 2010, WebP was the first modern format to deliver both lossy and lossless compression in one codec. Lossy WebP images are 25-35% smaller than equivalent JPGs at the same quality. Lossless WebP is about 26% smaller than PNG. It also supports transparency and animation. As of 2026, WebP is supported by 96%+ of browsers worldwide — it's the safe, modern baseline.

HEIC (High Efficiency Image Container)

Apple's default photo format since iOS 11 (2017). Based on the HEIF standard, it uses HEVC (H.265) compression for images. Produces files 40-50% smaller than JPG at equivalent quality, with support for Live Photos, burst mode, and depth maps. The catch: outside the Apple ecosystem, compatibility is limited — browsers don't render it, and Windows requires a paid extension.

AVIF (AV1 Image File Format)

The newest addition to the family, AVIF is based on the royalty-free AV1 video codec. It delivers roughly 50% smaller files than JPG at equivalent quality — meaning a 100 KB JPG can become a 50 KB AVIF with no visible difference. AVIF also supports transparency (alpha), lossless mode, HDR, 12-bit color depth, and animation. Browser support crossed 90% in 2025, and as of 2026 it's ready for production use. AVIF is the new standard.

File Size Comparison

We tested the same photo (taken on iPhone 15 Pro) and the same logo graphic across all five formats:

Photo (Lossy Compression)

Result: AVIF is the clear winner for photos — 56% smaller than JPG. HEIC is close behind at 50%. PNG is 2.5x larger than JPG for photographic content — never use PNG for photos.

Logo with Transparency (Lossless)

Result: For graphics with transparency, AVIF lossless is the smallest. PNG remains the safest universal fallback. JPG cannot handle transparency at all — never use it for logos or icons.

Quality Comparison

At equivalent file sizes, the quality differences become clear:

• AVIF: Best quality-to-size ratio of any format today. Clean gradients, no blockiness at low bitrates, excellent HDR support. At very low bitrates it introduces some softness rather than harsh artifacts — more forgiving than JPG or WebP.
• HEIC: Excellent quality even at smaller sizes, particularly good at handling smooth gradients and skies. Limited by its narrow platform support outside Apple devices.
• WebP: Similar to JPG at high quality, noticeably better at low bitrates where JPG would show blocking artifacts.
• JPG: Good quality at high bitrates (85%+). Below 70% quality, visible artifacts appear — blocking, ringing around edges, and color banding in gradients.
• PNG: Perfect lossless quality — pixel-exact reproduction. For graphics, text, and sharp edges this matters. For photos, the massive file size increase isn't worth the imperceptible quality gain.

Compatibility Matrix

Winner: JPG and PNG are universally compatible — they work everywhere, always. AVIF and WebP have reached broad enough support for production use on the web (90%+ global coverage). HEIC remains the compatibility outlier — great format, locked to Apple's ecosystem.

Feature Comparison

When to Use Each Format

Use AVIF When:

• Serving images on a modern website (use <picture> with JPG fallback)
• You want the absolute best quality-to-file-size ratio
• You need HDR or wide color gamut support
• You're building a new project and can use modern tooling

Use WebP When:

• You need a modern format with slightly broader legacy support than AVIF
• You need transparency with smaller files than PNG
• You're supporting a small subset of older iOS/macOS users (pre-2022)

Use JPG When:

• Maximum compatibility is required (government portals, exam systems, print labs)
• Sending photos to Windows users who may not have modern image viewers
• Uploading to platforms that don't accept modern formats (some social media, legacy CMS)
• You need the universal fallback — JPG works everywhere, no exceptions

Use HEIC When:

• Taking photos on iPhone (Apple's default, best storage efficiency)
• Storing personal photo archives on Apple devices
• Sharing photos within the Apple ecosystem (AirDrop, iMessage)
• You need Live Photos, burst mode, or depth data

Use PNG When:

• Your image needs transparency and universal compatibility (logos, icons, overlays)
• You're saving screenshots, diagrams, or graphics with sharp edges and text
• Lossless quality is non-negotiable (medical imaging, design source files)
• You're creating assets that other people will edit — PNG is the archival-safe graphics format

How to Convert Between Formats

HEIC to JPG

Use our free HEIC to JPG converter — processes files locally in your browser, no uploads required. This is the most common conversion: iPhone photos (HEIC) to universally compatible JPG.

PNG to JPG

Use our image compressor and select "Maximize compatibility" mode. This converts PNG to JPG while compressing — ideal when you don't need transparency and want a smaller file for the web.

JPG, PNG, WebP, or AVIF → Smaller File (Same Format)

Use our image compressor with "Keep format" mode. It keeps the original format and reduces file size through quality optimization. For best results, try our image resizer first — downsizing a 4000px photo to 1200px before compression saves dramatically more space.

HEIC to WebP or AVIF

Convert HEIC to JPG first using our HEIC converter, then use a tool like Squoosh to convert JPG to WebP or AVIF. Two steps, but gives you full control over quality at each stage.

What's Beyond AVIF? JPEG XL

While AVIF is still establishing itself as the production standard, JPEG XL is already gaining attention as a potential successor. It offers unique advantages: lossless recompression of existing JPGs (a 20% size reduction with zero quality loss), progressive decoding, and better performance at very high resolutions. Google briefly shipped JPEG XL in Chrome 91-109 before removing it, but community pressure and ecosystem demand may bring it back. For now, AVIF is the practical choice — supported, efficient, and ready today.

Conclusion

Here's the practical 2026 playbook:

• Use AVIF on your website with a JPG fallback via <picture> — it's the new standard for web images
• Use WebP if you need a mature modern format with slightly wider compatibility than AVIF
• Use JPG as the universal fallback — maximum compatibility, works everywhere
• Shoot in HEIC on your iPhone to save storage space
• Use PNG for logos, icons, and graphics that need lossless transparency

Need to convert or compress? Try our free privacy-first image tools — all processing happens in your browser.