Make your website faster by serving WebP instead of JPG. Convert one photo or an entire product catalogue in your browser, with quality control and ZIP download.
No limits or paywall.
Use instantly, no account.
Processed inside your browser.
Clean, full-quality output.
No upload queue or waiting.
Works on phone and desktop.
Images are usually the heaviest part of a web page, and on most sites they are still JPGs. Switching those JPGs to WebP is one of the simplest performance upgrades available: the photos look the same, but each one typically shrinks by around a quarter to a third. Across a product catalogue or a long blog archive, that adds up to megabytes saved per visit, faster rendering on mobile networks and lower bandwidth bills.
This JPG to WebP converter runs entirely in your browser. Add your images above, choose a quality, preview the result with the comparison slider and download everything as a ZIP. Nothing is uploaded, nothing is watermarked and there is no limit on how many files you convert.
Before
JPG, quality 85, 1600 × 1067
≈ 320 KB
A typical blog or product photo straight from an export preset.
After
WebP, quality 80
≈ 200–230 KB
Visually equivalent on screen, with fewer bytes for every visitor to download.
Typical savings reported for photographic content at similar visual quality. Your results depend on image content, source quality and the quality you pick.
Drop JPG or JPEG files into the workspace at the top of this page. Add as many as you like.
WebP is preselected. Start at quality 80 for photos and adjust using the comparison slider.
Click Convert Now. Every image is re-encoded as WebP by your browser, locally.
Download files individually or as a ZIP, then upload them to your CMS, CDN or static site.
| Use case | Quality | Suggested max width | Notes |
|---|---|---|---|
| Hero / banner image | 80–85 | 1920–2400 px | Largest element on the page; affects LCP |
| Blog content image | 75–80 | 1200–1600 px | Match your content column width ×2 for retina |
| Product photo | 80–90 | 1200–2000 px | Zoom views deserve the higher end |
| Thumbnail / card | 70–75 | 400–600 px | Small images hide artefacts well |
| Background texture | 60–70 | As displayed | Low detail importance, big savings |
| Screenshot with text | Use PNG→WebP | As displayed | See the PNG to WebP converter |
JPG, standardised in 1992, compresses each 8 × 8 block of pixels independently. WebP's lossy mode borrows from the VP8 video codec: before transforming a block it predicts the block from already-decoded neighbours, using one of several directional modes, and encodes only the prediction error. Smooth areas such as sky, skin and studio backgrounds predict almost perfectly, so they cost very few bits.
WebP also applies an in-loop deblocking filter that smooths block boundaries during encoding, and uses arithmetic entropy coding that squeezes the final bitstream harder than JPG's Huffman coding. The combination is why WebP reaches the same perceived quality with fewer bytes. The improvement is smallest on very noisy or extremely detailed images and largest on clean, well-lit photography.
Google uses page experience signals, including Core Web Vitals, as part of its ranking systems. The metric most affected by image weight is Largest Contentful Paint (LCP), the time until the largest visible element renders. On many pages that element is a hero image or product photo, so cutting its size directly reduces LCP, especially for mobile visitors on slower connections.
Format is only one lever. The biggest wins come from combining three steps:
WebP quality values do not map one-to-one onto JPG values, so do not simply copy your old JPG setting. As a rule of thumb, WebP at 75–80 looks comparable to JPG at 85–90 for typical photos. Start at 80, open the comparison slider, and zoom into faces, fabric and foliage, where compression first becomes visible. If you see smearing, raise quality by five; if it looks perfect, try five lower.
For thumbnails and small cards, 70 is usually indistinguishable from the original because detail is limited by the display size. For hero images on high-end product pages, 85 keeps micro-texture intact. Avoid 100: lossy WebP at maximum quality produces large files without visible benefit.
All current browsers display WebP, so most sites can serve it directly. If you also need JPG for an email newsletter, an RSS feed or a partner that ingests your images, keep both versions. In HTML, the <picture> element lets the browser pick: list a WebP <source> first and the JPG in the <img> tag as a fallback. Many CDNs and frameworks, including Next.js's image component, can also convert and negotiate formats automatically, in which case this tool is ideal for one-off assets and checking what quality you want.
It is worth confirming the gains rather than assuming them. Before converting, open your page with the browser's developer tools, switch to the Network panel, filter by images, disable the cache and reload. Note the total transferred size and the size of the largest image. After replacing the JPGs with WebPs, repeat the same measurement. A field tool such as PageSpeed Insights then shows whether Largest Contentful Paint improved for real visitors over the following weeks.
If the savings are smaller than expected, the usual culprit is dimensions: a WebP that is still three times wider than its slot is wasting most of its bytes. Resize, convert again and re-measure.
Conversion runs through your browser's own WebP encoder on an off-screen canvas. There is no upload, which keeps unreleased product photos and client work confidential and makes the tool fast on any connection. The exported files carry no EXIF metadata, so camera serial numbers and GPS coordinates are removed, which also trims a few more kilobytes from every image.
Product galleries are image-heavy. Converting to WebP lightens category and product pages, which is where shoppers decide whether to stay.
Convert article images before uploading so every post loads faster, especially for readers on mobile data.
Prepare optimised assets for static sites, landing pages and client handovers without installing command-line tools.
Photographers and designers can show large, high-quality images while keeping galleries quick to browse.
For photographs at similar visual quality, WebP is typically around 25–35% smaller than JPG. Savings vary: very detailed or noisy images save less, smooth images with gradients often save more.
Yes. Every current version of Chrome, Edge, Firefox, Safari (desktop and iOS) and Samsung Internet displays WebP. Only very old browsers lack support, and those make up a negligible share of traffic today.
Smaller images download faster, which most directly helps Largest Contentful Paint (LCP) when the largest element is an image. Combine WebP with correct dimensions, lazy loading below the fold and a CDN for the biggest gains.
Both formats are lossy, so a second compression step happens. At quality 75–85 the change is not noticeable on screen. Always convert from your highest-quality JPG and avoid converting the same image back and forth.
No. Conversion uses your browser's built-in WebP encoder. Images never leave your device, which is ideal for unreleased product photos or client work.
Yes. If you need to support legacy software, serve WebP with a JPG fallback using the HTML <picture> element, or let your CDN negotiate the format from the browser's Accept header.
AVIF can be even smaller than WebP but encodes more slowly and has a slightly shorter support history. WebP is the safe, fast default; AVIF is worth testing for very large hero images. The Image Compressor can export AVIF where your browser supports it.
Files exported here do not include EXIF, which removes camera data and GPS coordinates and saves a few more kilobytes per image.
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