JPG to WebP

What is JPG?

JPG, also written as JPEG, stands for Joint Photographic Experts Group — the committee that standardized the format in 1992. It is a raster image format that uses lossy compression to shrink file size by discarding visual data the human eye is less sensitive to. JPG is the most widely used and most universally supported image format on the web, found everywhere from digital cameras and smartphones to websites and social media. It is especially well suited to photographs and natural scenes that contain millions of colors and smooth gradients. However, JPG does not support transparency or animation, and every time you re-save a JPG the quality degrades a little further. Its file size is also noticeably larger than modern alternatives such as WebP at the same visual quality, which is why converting JPG to WebP has become a standard step in modern web optimization workflows.

What is WebP?

WebP is a modern image format introduced by Google in 2010, designed specifically to make the web faster by producing smaller image files. WebP supports both lossy and lossless compression within a single format, so you can choose between maximum quality and minimum size when you convert an image. WebP also supports alpha-channel transparency and animation, meaning it can replace PNG, JPG and GIF all at once. According to Google, lossy WebP can be 25–35% smaller than a comparable JPG at the same visual quality — a strong reason to convert JPG to WebP for any web project. Modern browsers including Chrome, Firefox, Safari and Edge all support WebP, so the format is safe to use for virtually any web audience today.

JPG vs WebP comparison

Both JPG and WebP are widely supported image formats for photographs, but they differ notably in compression efficiency, features and file size. The table below summarises the key differences between JPG and WebP so you can decide which format fits your needs when you convert JPG to WebP.

Feature	JPG (JPEG)	WebP
Year introduced	1992	2010
Compression	Lossy (DCT-based)	Lossy and lossless
Image quality	Degrades on each re-save	Adjustable, near-lossless possible
Transparency	No	Yes (alpha channel)
Animation	No	Yes (native)
Typical file size	Larger at equal quality	25–35% smaller than JPG at equal quality
Browser support	Universal	All modern browsers
Software compatibility	Near-universal	Good, but some older tools lack support
Best for	Photos, sharing, email, documents	Web, mobile, performance, SEO

In short, JPG wins on legacy compatibility, while WebP wins on file size and modern features. Converting from JPG to WebP trades a small amount of legacy compatibility for significantly smaller files that load faster, cost less bandwidth and rank better in search results.

When to use JPG to WebP conversion

Converting JPG to WebP is the right choice in most web-publishing scenarios where smaller file size matters. Because WebP keeps quality while being much smaller than JPG, the JPG to WebP conversion is especially valuable for the following use cases:

• Website speed optimization. Smaller images load faster, improve Core Web Vitals such as LCP, and provide a better experience for visitors.
• Bandwidth savings. Less data transfer reduces hosting costs and is friendlier to users on metered or slow connections.
• CDN delivery. Lighter WebP files cache and distribute more efficiently through content delivery networks.
• Mobile optimization. Faster image loading on phones and tablets over cellular networks.
• SEO performance. Search engines reward faster pages with better rankings, so converting JPG to WebP can directly support your SEO strategy.
• E-commerce and product images. Large catalogues benefit enormously from the size reduction of WebP compared to JPG.

Keep your original JPG file as a master copy whenever possible — it is universally compatible and ideal for editing, print and document workflows. Use the WebP export for web delivery where smaller file size has the biggest impact.

How to convert JPG to WebP

Converting a JPG image to WebP with this tool takes only a few seconds and happens entirely in your browser — no uploads, no sign-up, no watermark. The tool decodes your JPG with the browser's image engine and re-encodes it as WebP through the Canvas API, so the conversion is both fast and completely private. Follow these four steps to convert your JPG to WebP:

1. Upload your JPG. Click the upload area or drag and drop a .jpg or .jpeg file from your computer. The image is decoded locally and shown as a preview.
2. Adjust the WebP quality. Use the quality slider from 10% to 100% to balance file size and visual quality. 85% is a good default for photographs; lower values produce smaller files.
3. Convert to WebP. Click the "Convert to WebP" button. The tool re-encodes the decoded image to WebP via the Canvas API and shows the original and converted file sizes side by side, along with the percentage saved.
4. Download the WebP. Click "Download WebP" to save the converted file to your device. The original JPG remains untouched on your computer.

Because every step runs locally in your browser using JavaScript, your JPG image is never uploaded to a server. This makes the conversion completely private, fast, and suitable for sensitive or confidential images.