Image Format Comparison: HEIC vs JPG vs PNG vs WebP vs AVIF

Five image formats dominate digital photography and web publishing in 2026: HEIC, JPEG, PNG, WebP, and AVIF. Each format solves a different problem. Choosing the wrong one wastes storage, degrades quality, or breaks compatibility.

This guide compares all five formats across compression, quality, features, browser support, and licensing. Use it to pick the right format for every scenario.

Format Origins and Codecs

JPEG (1992)

JPEG is the oldest and most universal image format still in active use. The Joint Photographic Experts Group published the standard in 1992. JPEG uses Discrete Cosine Transform (DCT) compression with 8-bit color depth. It supports lossy compression only. Every browser, operating system, image editor, and device on earth reads JPEG files.

PNG (1996)

PNG was created as a patent-free replacement for GIF. The Portable Network Graphics format uses DEFLATE lossless compression. PNG supports 8-bit and 16-bit color depth plus full alpha channel transparency. It produces larger files than lossy formats but preserves every pixel exactly. For more on how PNG compares with HEIC specifically, see HEIC vs PNG.

WebP (2010)

Google developed WebP to reduce image bandwidth on the web. WebP uses VP8 for lossy compression and VP8L for lossless compression. It supports transparency, animation, and both lossy and lossless modes. WebP reached near-universal browser support by 2022. For a deeper comparison, see HEIC vs WebP.

HEIC (2015)

HEIC wraps HEVC/H.265 video compression around still images. Apple adopted HEIC as the default iPhone camera format in 2017. HEIC supports 16-bit color depth, HDR, transparency, animation, depth maps, and Live Photos. Browser support remains limited due to HEVC patent licensing. For full background, see What is HEIC?.

AVIF (2019)

AVIF uses the royalty-free AV1 codec inside a HEIF container. The Alliance for Open Media (Google, Mozilla, Apple, Microsoft, Netflix) released AV1 in 2018. AVIF supports 12-bit color depth, HDR, transparency, and animation. Browser support reached 93% by 2025. For a head-to-head breakdown, see HEIC vs AVIF.

Master Comparison Table

| Feature | JPEG | PNG | WebP | HEIC | AVIF | | --- | --- | --- | --- | --- | --- | | Year Introduced | 1992 | 1996 | 2010 | 2015 | 2019 | | Codec | DCT | DEFLATE | VP8 / VP8L | HEVC (H.265) | AV1 | | Compression | Lossy only | Lossless only | Lossy and lossless | Lossy and lossless | Lossy and lossless | | Max Bit Depth | 8-bit | 16-bit | 8-bit | 16-bit | 12-bit | | Transparency | No | Yes (8-bit alpha) | Yes (8-bit alpha) | Yes (8-bit alpha) | Yes (up to 12-bit alpha) | | Animation | No | No (APNG exists) | Yes | Yes | Yes | | HDR Support | No | No | Limited | Yes (HLG, HDR10) | Yes (HLG, HDR10, PQ) | | Wide Color Gamut | sRGB only | sRGB (16-bit) | sRGB only | Display P3, Rec. 2020 | Display P3, Rec. 2020 | | Browser Support | 100% | 100% | 97% | ~30-35% | 93% | | Licensing | Royalty-free | Royalty-free | Royalty-free (Google) | HEVC patents (royalties) | Royalty-free (AOM) | | Max Resolution | 65,535 x 65,535 | No practical limit | 16,383 x 16,383 | 8,192 x 4,320 (Level 6) | 65,536 x 65,536 |

File Size Comparison

The same 12 MP smartphone photo produces dramatically different file sizes across formats. The table below shows typical sizes at comparable visual quality (SSIM > 0.95).

| Format | File Size | Savings vs JPEG | Notes | | --- | --- | --- | --- | | JPEG (quality 80) | 3.5 MB | Baseline | Universal compatibility | | PNG (lossless) | 12.4 MB | 254% larger | Exact pixel preservation | | WebP (quality 80) | 2.1 MB | 40% smaller | Google's web-optimized format | | HEIC (quality 80) | 1.8 MB | 49% smaller | Apple's default camera format | | AVIF (quality 80) | 1.5 MB | 57% smaller | Maximum compression efficiency |

Key observations from the data:

• AVIF produces the smallest lossy files. It saves roughly 57% compared to JPEG at equivalent visual quality.
• HEIC and WebP fall in the middle. Both save 40-49% over JPEG with slightly different strengths.
• PNG is the largest format because lossless compression preserves all pixel data.
• JPEG remains the baseline against which all modern formats are measured.

For a detailed analysis of HEIC vs JPEG file sizes, see HEIC File Size vs JPG.

Compression Quality Analysis

JPEG

JPEG compression creates visible artifacts at quality settings below 70. Block boundaries, color banding, and mosquito noise appear around high-contrast edges. JPEG's 8x8 pixel DCT blocks are the cause. At quality 85-95, JPEG produces acceptable photographic results. At quality 50 or below, degradation is obvious.

PNG

PNG preserves every pixel with zero quality loss. There is no quality setting because PNG is always lossless. This makes PNG ideal for screenshots, diagrams, logos, and images with sharp text. The trade-off is file size -- PNG files are 3-7 times larger than lossy formats.

WebP

WebP produces cleaner results than JPEG at the same file size. VP8 handles smooth gradients better than JPEG's DCT blocks. At aggressive compression below quality 50, WebP shows softening and blurring rather than the blocky artifacts typical of JPEG. WebP lossless mode compresses 25-35% smaller than PNG.

HEIC

HEIC preserves more fine detail than WebP or JPEG at equivalent file sizes. The HEVC codec uses variable-size coding blocks from 4x4 to 64x64 pixels, adapting to image content. This produces sharper textures and fewer artifacts. HEIC also supports 16-bit color depth, preserving subtle tonal gradations that 8-bit formats discard.

AVIF

AVIF delivers the best quality-per-byte ratio of all five formats. AV1's advanced partitioning, film grain synthesis, and chroma-from-luma prediction preserve visual detail at extreme compression levels. AVIF handles low-bitrate compression better than HEIC, maintaining texture in hair, foliage, and fabric patterns.

Browser Support in 2026

Browser support determines which formats work for web delivery. JPEG and PNG work everywhere. WebP works nearly everywhere. AVIF works in 93% of browsers. HEIC works in roughly 30-35%.

| Format | Chrome | Firefox | Safari | Edge | Global Support | | --- | --- | --- | --- | --- | --- | | JPEG | Yes | Yes | Yes | Yes | 100% | | PNG | Yes | Yes | Yes | Yes | 100% | | WebP | Yes (2014) | Yes (2019) | Yes (2020) | Yes (2018) | 97% | | AVIF | Yes (2020) | Yes (2021) | Yes (2023) | Yes (2020) | 93% | | HEIC | macOS/Android only | No | Yes | OS-dependent | ~30-35% |

WebP is the safest modern format for web delivery. It balances compression savings with near-universal support. AVIF offers stronger compression but lacks support in approximately 7% of browser sessions. HEIC is unsuitable for the web due to fragmented support.

For a complete browser-by-browser breakdown, see HEIC Browser Support in 2026.

Transparency Support

Four of the five formats support transparency. JPEG does not.

| Format | Transparency | Alpha Depth | Use Case | | --- | --- | --- | --- | | JPEG | No | N/A | Not suitable for transparency | | PNG | Yes | 8-bit (256 levels) | Logos, icons, overlays | | WebP | Yes | 8-bit (256 levels) | Web graphics with transparency | | HEIC | Yes | 8-bit (256 levels) | Apple ecosystem transparent images | | AVIF | Yes | Up to 12-bit (4,096 levels) | HDR transparent overlays |

PNG has been the default transparency format for decades. WebP replaces PNG for web transparency with 25-35% smaller files. AVIF offers the deepest alpha channel at 12-bit precision for HDR compositing.

Animation Support

Three formats support animation natively. JPEG and standard PNG do not.

• WebP: Frame-based animation similar to GIF. Widely supported in browsers. Files are 50-90% smaller than equivalent GIFs.
• HEIC: Image sequences used for Apple Live Photos and burst shots. Not supported in web browsers.
• AVIF: Frame-based animation using AV1 keyframes. Supported in Chrome, Firefox, and Safari. Produces smaller animated files than WebP.

For web animation replacing GIF, WebP has the broadest support. AVIF animation delivers smaller files but lacks support in older browsers.

Licensing and Cost

Licensing determines which formats gain industry adoption.

| Format | License | Cost | Effect | | --- | --- | --- | --- | | JPEG | ISO/IEC standard | Free | Universal adoption since 1992 | | PNG | W3C Recommendation | Free | Created specifically to avoid GIF patents | | WebP | BSD license (Google) | Free | Adopted by all browser vendors | | HEIC | HEVC patent pools | Royalties required | Limited adoption outside Apple | | AVIF | AOM patent license | Free (royalty-free) | Rapid browser adoption since 2020 |

HEIC is the only major format with patent licensing costs. HEVC is covered by patents from MPEG LA, Access Advance, and individual holders. Companies implementing HEVC decoders must pay royalties. This is why Mozilla refuses to add HEIC support to Firefox and why Linux distributions exclude HEVC codecs.

The royalty-free status of JPEG, PNG, WebP, and AVIF is the primary reason these formats have broader adoption than HEIC.

Best Use Case for Each Format

JPEG: Universal Sharing and Compatibility

Use JPEG when the recipient or platform is unknown. Every email client, messaging app, social media platform, CMS, and operating system supports JPEG. File sizes are larger than modern formats, but compatibility is guaranteed. JPEG is also the standard for print workflows.

Best for: email attachments, social media uploads, print preparation, legacy system compatibility.

PNG: Lossless Quality and Transparency

Use PNG when pixel-perfect accuracy matters. Screenshots, technical diagrams, logos with transparent backgrounds, and UI assets require lossless compression. PNG is also the safest choice for images containing sharp text overlays. File sizes are large, but quality loss is zero.

Best for: screenshots, logos, icons, diagrams, text overlays, transparent web graphics (legacy fallback).

WebP: Primary Web Format

Use WebP as the default image format for websites. WebP delivers 25-40% smaller files than JPEG with 97% browser support. It handles both photographs (lossy) and graphics (lossless) in a single format. WebP supports transparency, making it a PNG replacement for web graphics.

Best for: website images, web application assets, transparent web graphics, animated content replacing GIF.

HEIC: Apple Device Storage

Use HEIC for storing photos on Apple devices. HEIC saves 40-50% storage compared to JPEG while preserving 16-bit color depth, HDR metadata, depth maps, and Live Photo sequences. Every iPhone since the iPhone 7 captures in HEIC by default. Convert to JPEG or WebP when sharing outside the Apple ecosystem.

Best for: iPhone and iPad photo storage, iCloud photo libraries, Apple ecosystem workflows, HDR photography.

For sharing HEIC photos with non-Apple users, HEICify's HEIC to JPG converter processes files directly in your browser with no uploads.

AVIF: Maximum Web Compression

Use AVIF when you need the smallest possible web image files. AVIF saves 50-57% compared to JPEG with 93% browser support. It is the strongest choice for bandwidth-sensitive applications, large image galleries, and HDR web content. Encoding is slow, so AVIF works best in build pipelines rather than real-time processing.

Best for: image-heavy websites, progressive web apps, HDR web content, bandwidth-constrained delivery.

Decision Flowchart: Which Format Should I Use?

Follow these questions to select the right format.

1. Does the image need transparency?

• Yes, for the web: Use WebP (97% support) or PNG (100% support, larger files).
• Yes, for HDR compositing: Use AVIF (12-bit alpha) or HEIC (Apple ecosystem only).
• No: Continue to question 2.

2. Is the image for a website or web application?

• Yes: Use WebP as the primary format. Serve AVIF to supported browsers for additional savings. Use JPEG as the universal fallback.
• No: Continue to question 3.

3. Is pixel-perfect accuracy required?

• Yes: Use PNG for universal lossless compatibility. Use WebP lossless for 25-35% smaller files.
• No: Continue to question 4.

4. Will the image stay within the Apple ecosystem?

• Yes: Use HEIC for maximum storage efficiency with HDR and depth map preservation.
• No: Continue to question 5.

5. Is maximum compatibility the priority?

• Yes: Use JPEG. It works on every device, platform, and application.
• No: Use WebP for the best balance of compression and compatibility.

Recommended Web Delivery Strategy

Serve multiple formats using the HTML <picture> element. Browsers select the first format they support.

<picture>
  <source srcset="photo.avif" type="image/avif" />
  <source srcset="photo.webp" type="image/webp" />
  <img src="photo.jpg" alt="Description" width="800" height="600" />
</picture>

This strategy delivers AVIF to 93% of browsers, WebP to the remaining modern browsers, and JPEG to everything else. Do not include HEIC in the <picture> element. HEIC's fragmented support causes unpredictable failures.

For source photos stored as HEIC files, convert them before web delivery. HEICify handles batch conversion of HEIC files to JPEG and PNG directly in your browser -- no server uploads, no software installation. Use the HEIC to JPG converter for photographs or the HEIC to PNG converter for lossless output with transparency.

Format Evolution Timeline

| Year | Event | | --- | --- | | 1992 | JPEG standard published by ISO/IEC | | 1996 | PNG 1.0 released as patent-free GIF alternative | | 2010 | Google releases WebP based on VP8 codec | | 2013 | HEVC/H.265 codec finalized | | 2015 | HEIF/HEIC container standard published | | 2017 | Apple adopts HEIC as default iPhone camera format (iOS 11) | | 2018 | AV1 codec released by Alliance for Open Media | | 2019 | AVIF specification published; Chrome adds AVIF support (2020) | | 2020 | Safari adds WebP support, completing universal browser coverage | | 2023 | Safari adds AVIF support (Safari 16.4) |

The Bottom Line

No single image format is optimal for every situation. Each format occupies a distinct niche.

JPEG remains the universal standard. It works everywhere, and its 32-year track record ensures compatibility for decades to come. File sizes are the largest of the five formats, but reliability is unmatched.

PNG is irreplaceable for lossless content. Screenshots, logos, and images with text require pixel-perfect accuracy that only lossless compression provides.

WebP is the best general-purpose web format in 2026. It balances strong compression with 97% browser support and handles both photographs and transparent graphics.

HEIC is the most feature-rich format for photography. It preserves HDR, depth maps, and Live Photos while cutting storage by half compared to JPEG. Its value is highest within the Apple ecosystem.

AVIF delivers the strongest compression of any format. It saves 57% over JPEG with 93% browser support. For image-heavy websites, AVIF reduces bandwidth costs more than any alternative.

The practical approach: store originals in HEIC or the camera's native format, serve WebP and AVIF on the web, and fall back to JPEG for universal compatibility. When you need to convert between formats, HEICify handles HEIC conversion entirely in your browser with no file uploads and no quality loss beyond your chosen compression settings.