Image Format Comparison
JPG vs PNG vs WebP - Side by Side

Upload any image to compare JPG, PNG, and WebP side by side - Real file sizes, quality previews, and savings at a glance.

Re-encoding happens entirely in your browser via the Canvas API. Nothing is uploaded to any server. Adjust the quality slider before uploading to control JPG and WebP compression.

JPG / WebP Quality 85 Adjust before uploading. Higher = better quality, larger file. 80–90 is the sweet spot for most photos.

Drop an image here, or click to browse Supports JPG, PNG, WebP, GIF, BMP, AVIF — any browser-readable image

Encoding formats…

File Size Comparison

Format guide

Format Deep-Dive: JPG, PNG, WebP, AVIF

Each image format makes different tradeoffs between file size, quality, and compatibility. Here's what you need to know.

JPEG / JPG

Best for: Photographs, complex scenes with many colors and gradients.

+ Universal support everywhere
+ Very small file sizes for photos
+ Adjustable quality/size tradeoff
- Lossy: artifacts at low quality
- No transparency support

PNG

Best for: Screenshots, logos, icons, text-heavy images, anything needing transparency. Use a PNG source when extracting brand colors with the Color Palette Extractor for the most accurate results.

+ Lossless - Perfect quality
+ Full alpha transparency
+ No quality degradation on re-save
- Large file sizes for photos
- Not ideal for complex imagery

WebP

Best for: Web images where you want smaller sizes than JPG/PNG with good quality.

+ 25–35% smaller than JPEG at same quality
+ Supports transparency
+ Supported in all modern browsers
- Not universally supported in older tools
- Less native OS support vs JPG/PNG

AVIF

Best for: Next-generation web delivery where maximum compression is critical.

+ Up to 50% smaller than JPEG
+ Excellent quality at low bitrates
+ Supports transparency and HDR
- Slower to encode/decode
- Limited support in older browsers and tools

Decision guide

When Should I Use Each Format?

The right format depends entirely on your use case. Here are four common scenarios. Before converting, use the Image File Size Calculator to estimate sizes for any format without uploading.

Hero Images

Full-width photos on landing pages - File size matters a lot for page speed and Core Web Vitals.

Use WebP or AVIF

Product Photos

E-commerce product images need sharp detail, accurate colors, and reasonable file sizes across thousands of SKUs.

Use WebP (JPG fallback)

Icons & Logos

Logos and UI icons need crisp edges and transparency. Lossy formats introduce halos and blurring on sharp lines.

Use PNG or SVG

Animations

Animated content like GIF replacements for web use. WebP supports animation with far better compression than GIF.

Use WebP or AVIF

FAQ

Frequently Asked Questions

No. Your image is never sent anywhere. All re-encoding happens locally in your browser using the HTML5 Canvas API (canvas.toBlob()). The comparison is entirely client-side and private.

The "Original" size shown is the raw file size of the image you uploaded. When the browser re-encodes it (even to the same format), it applies its own compression engine, which may produce a different size. For the most accurate comparison, start with a lossless PNG source. You can verify your source file's format, color space, and exact dimensions using the Image Metadata Viewer before comparing.

The quality slider sets the compression level for JPEG and WebP encoding (1–100, where 100 is maximum quality / largest file). PNG is always lossless and is not affected by the slider. Set the quality before uploading your image - Changing it afterward requires re-uploading.

While WebP is typically 25–35% smaller than JPEG for most photos, results vary by image content. For some images - Especially those with a lot of fine detail, film grain, or noise — the browser's WebP encoder may produce a larger file than its JPEG encoder at the same quality setting. Always compare for your specific image. Once you know WebP is the right choice, convert your files with our JPG to WebP converter.

PNG uses lossless compression - It stores every pixel exactly as-is. For photographs with millions of unique colors, lossless compression doesn't reduce size very much. JPEG and WebP use lossy compression that discards fine detail the eye can't easily perceive, resulting in much smaller files for photographic content.

Yes. Each format card has a "Download" button that saves the re-encoded version to your device. The downloaded file will match the quality and format shown in the comparison card. If you need to further reduce a downloaded JPG's file size, use our JPG compressor to fine-tune quality and size.

AVIF encoding via the Canvas API (canvas.toBlob('image/avif')) is not yet widely supported in most browsers. We include WebP, JPG, and PNG comparisons as these are universally supported. AVIF support will be added as browser coverage improves.

Image Format ComparisonJPG vs PNG vs WebP - Side by Side