Smaller files, faster pages, better Core Web Vitals — convert JPG to WebP for modern web delivery
Drop JPEG files here
or browse files
Up to 10 files · 50 MB each
Click "Upload JPG" or drag files onto the upload area. Select multiple files at once for batch conversion.
Files are converted to WebP right away. Single files are typically ready in under two seconds; larger batches take a few seconds more.
Click "Download WebP" to save your file. Batch conversions can be downloaded as a ZIP archive. No signup or email needed.
WebP delivers the same visual quality as JPG at significantly smaller file sizes — a direct improvement to page load speed, bandwidth costs, and Core Web Vitals scores.
WebP supports full alpha channel transparency. Logos, product cutouts, and UI assets with transparent backgrounds are smaller in WebP than the equivalent PNG.
WebP handles multi-frame animation with far smaller files than GIF — useful for product demos, banners, and any looping web content.
WebP supports both lossy compression (for photos and content images) and lossless compression (for graphics and assets that need to stay pixel-perfect).
Convert up to 10 JPG files to WebP in one session — practical for optimizing a full set of product photos, blog images, or web assets at once.
Completely free to use. No watermarks, no conversion limits, no account required.
WebP is the format Google recommends for web images — and for good reason. At equivalent visual quality, WebP files are typically 25–35% smaller than JPGs. That size difference directly improves page load times, Largest Contentful Paint (LCP) scores, and bandwidth costs. If Google PageSpeed Insights is flagging your images, converting to WebP is usually the fastest fix.
JPG doesn't support transparent backgrounds — clear areas become solid white. WebP does support full alpha channel transparency, which makes it useful for logos, product cutouts, and UI assets that need to sit cleanly on different backgrounds. Unlike PNG, WebP achieves this at a much smaller file size, which matters for web performance.
WebP supports multi-frame animation like GIF, but at a fraction of the file size — animated WebP files are typically 64% smaller than equivalent GIFs. If you're creating looping animations for banners, social media, or product showcases from a series of JPG frames, WebP is a significantly more efficient delivery format than GIF.
No software to install. Works directly in your browser on any device — desktop, tablet, or phone.
Convert up to 10 JPG files to WebP in a single session. Files are processed in parallel and downloadable individually or as a ZIP.
Supports source JPG files up to 50 MB — large enough for high-resolution photos and e-commerce product images.
Adjust the quality level before converting. A setting of 80–85 is a good default for web images; higher settings work better for product photos where fine detail matters.
All uploads use HTTPS encryption. Files are permanently deleted from servers after conversion. GDPR compliant.
Works on all modern mobile browsers. No app download needed.
WebP was built specifically to replace JPG, PNG, and GIF for web use — combining better compression, transparency, and animation in a single format. The main consideration is browser compatibility, though all major browsers have supported WebP since 2020.
| Aspect | JPEG | WebP |
|---|---|---|
| Compression | Lossy | Both lossy and lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Typical File Size | Small to medium (50 KB – 5 MB for photos) | 25–35% smaller than equivalent JPG |
| Color Depth | 24-bit (16.7 million colors) | 24-bit (RGB) or 32-bit (RGBA) |
| Best For | Photos, social media, email attachments | Website images, e-commerce photos, web graphics |
| Browser Support | All browsers | All modern browsers (Chrome 23+, Firefox 65+, Safari 14+, Edge 18+) |
Convert JPG to WebP when optimizing images for web delivery. The file size reduction is meaningful enough to improve page speed measurably, and all modern browsers support the format. For email or social media, JPG remains more universally compatible.
If you're serving images on a website and still using JPG everywhere, converting to WebP is one of the simplest performance improvements available. WebP files are typically 25–35% smaller than JPGs at equivalent visual quality — a difference that shows up directly in page load times, Core Web Vitals scores, and bandwidth costs. All major browsers have supported WebP since 2020, so compatibility is no longer a reason to hold back.
The primary reason is web performance. Smaller image files mean faster page loads, lower bandwidth costs, and better scores on Google's Core Web Vitals — particularly Largest Contentful Paint (LCP), which measures how quickly the main content of a page becomes visible. PageSpeed Insights explicitly recommends serving images in WebP format, and for good reason: the file size savings are consistent and meaningful across a wide range of image types.
The second reason is flexibility. WebP handles what previously required three separate formats — JPG for photos, PNG for transparent graphics, and GIF for animations. A single WebP file can be lossy or lossless, include an alpha channel, or contain multiple animation frames. For a web project, that simplicity is useful.
The third reason is transparency. If you need web graphics with transparent backgrounds — logos, product cutouts, UI elements — WebP gives you that with significantly smaller files than PNG. A transparent PNG that's 200 KB might be 80–100 KB as a WebP.
**File size:** WebP's compression algorithm is more efficient than JPG's. At the same visual quality, WebP files are consistently 25–35% smaller. For a page with 20 images, that adds up to a measurable reduction in load time.
**Compression modes:** JPG is lossy only. WebP supports both lossy and lossless compression — useful when you need different modes for different asset types within the same project.
**Transparency:** JPG has no transparency support. WebP's alpha channel support at smaller file sizes than PNG makes it the practical choice for transparent web graphics.
**Animation:** WebP animation is dramatically smaller than GIF — typically around 64% smaller for the same content. If you're still using GIFs for web animations, WebP is a straightforward upgrade.
**Browser support:** All modern browsers support WebP. The exception is very old browser versions (IE 11, Safari 13 and below). If you need to support these, serve JPG as a fallback using the HTML picture element.
**Quality setting 80–85 is a reliable default for web images.** At this level, WebP produces files that are noticeably smaller than the source JPG with no visible quality difference on screen. For hero images or product photos where fine detail matters, try 85–90.
**Keep your original JPGs.** WebP is great for web delivery, but it's not a universal archival format. Hold onto source files for anything you might need to print, re-edit, or deliver in a different format later.
**Don't convert images that are already small.** If a JPG is already 20 KB, the WebP version won't be meaningfully smaller. Focus conversion effort on larger images — hero images, product photos, blog feature images — where the size reduction has a real impact.
**Use lossless mode for graphics with text or flat color.** For icons, diagrams, and screenshots, lossless WebP often produces better results than lossy — sharper edges, no color banding, and still smaller than PNG.
**Web developers and site owners** converting image libraries to improve PageSpeed scores, reduce hosting bandwidth, and speed up page delivery — especially on mobile connections where image size has the most impact.
**E-commerce teams** optimizing product photography. Large product image catalogs can benefit significantly from WebP conversion — faster load times on product pages directly correlate with better conversion rates.
**Content managers and bloggers** updating existing posts or preparing new content for CMS platforms that support WebP uploads. Many modern CMSs (WordPress, Shopify, Webflow) handle WebP natively.
**Developers building image processing pipelines** who need to automate conversion of uploaded JPGs to WebP for storage and delivery efficiency.
For web delivery, WebP is the best format available for most images — smaller than JPG, more capable than PNG, and supported by all modern browsers. PortImg converts your JPGs to WebP directly in your browser in seconds. No software, no account, no watermarks.