Convert Image to WebP Online Free
JPG to WebP, PNG to WebP — 25–35% smaller files, faster websites, better SEO scores.
Convert Images to WebPFree online WebP converter — 25–35% smaller than JPG, no upload, no account.
Convert JPG to WebP, PNG to WebP and any image to WebP online for free. WebP delivers smaller file sizes than JPG and PNG at the same visual quality — reducing page weight, improving load speed and boosting Core Web Vitals. No upload, no account, no limits.
Convert image to WebP online — smaller files, faster sites
Convert any image to WebP online free — no upload, no account, no daily limit. JPG to WebP, PNG to WebP, HEIC to WebP — all supported in the same batch. WebP output is 25–35% smaller than JPG and 25–50% smaller than PNG at equivalent visual quality.
Smaller image files mean faster page loads. Faster page loads mean better Core Web Vitals scores. Better Core Web Vitals mean higher rankings in Google search. Google explicitly recommends serving images in WebP format as one of the top web performance optimizations. Converting your image library to WebP is one of the fastest ways to improve page speed and SEO simultaneously.
Everything runs directly in your browser using the Canvas API. No upload wait, no privacy risks, no usage cap — convert as many images to WebP as you need, at full resolution, completely free. Adjust quality with the slider, batch convert images to WebP, and download all results in a ZIP archive.
Also try our image compressor, image resizer, or convert image to JPG — all free, all in-browser.
- 1Upload your images
Drag and drop any number of images onto the upload area, or click to browse. Supported input: JPG, PNG, HEIC, HEIF, AVIF, GIF, BMP, TIFF and SVG. No file size limit — all processing runs locally in your browser. Upload your entire image library for batch conversion.
- 2Set quality and convert
Use the quality slider if needed (default is set for optimal web output — smaller files than JPG at equivalent visual quality). Click "Convert All". Files are processed in parallel in your browser — no upload, no server, fully private.
- 3Download your WebP files
Each converted file shows the original size, WebP size and savings percentage. Download files individually, or click "Download All" for a ZIP archive. Upload the WebP files to your website, CDN or CMS to start seeing page speed improvements.
Who should convert images to WebP
Web developers — improve page speed and Core Web Vitals
Perfect for ecommerce, social media, and marketing teams. Google PageSpeed Insights flags JPG and PNG images as a top performance opportunity on most websites. Converting to WebP is typically the single change with the biggest impact on page weight. Serve WebP images on your web pages and watch LCP scores improve, total page weight drop and PageSpeed Insights scores increase. Faster pages rank higher in search, load better on mobile and reduce bounce rate.
Ecommerce teams — faster product pages, higher conversion
Product pages with many large images are the pages most hurt by unoptimized formats. Converting product photos from JPG to WebP reduces image payload by 25–35%, making product galleries, zoom views and mobile feeds load faster. A faster product page keeps shoppers on the page longer, reduces cart abandonment and improves conversion rate. Batch convert images to WebP and replace the originals in your CMS or product feed in one session.
SEO professionals — better rankings through performance
Core Web Vitals — Largest Contentful Paint, First Input Delay and Cumulative Layout Shift — are direct Google ranking signals. Images are the primary driver of LCP. Serving WebP images instead of JPG and PNG improves LCP by reducing the time to load the largest visible element on the page. Converting image libraries to WebP is one of the most actionable SEO improvements available that does not require content changes or structural site work.
Content creators and bloggers — reduce image size for web
Blog posts, landing pages and content sites with many inline images benefit from reduced image sizes. A blog post with 10 inline JPG images averaging 150 KB each serves 1.5 MB of image data. The same post with WebP images serves approximately 1 MB — 33% less. This adds up across an entire content library. Convert all blog images to WebP before uploading to WordPress, Ghost, Webflow or any CMS to reduce storage, cut bandwidth costs and improve reader experience on slow connections.
Why this is the best free online WebP converter
Smaller files, privacy-first processing, and batch capability — built for web performance workflows.
WebP is 25–35% smaller than JPG and 25–50% smaller than PNG
WebP uses advanced compression algorithms developed by Google that consistently outperform JPEG and PNG at equivalent visual quality. A typical JPG photo converted to WebP at the same quality setting is 25–34% smaller. A PNG converted to WebP lossless is 26% smaller. These reductions translate directly into faster page load times, lower bandwidth usage, better Core Web Vitals scores and improved search rankings — every image you convert to WebP makes your website measurably faster.
Transparency, animation and both lossy and lossless in one format
WebP does what no other single format does: it supports lossy compression (like JPG), lossless compression (like PNG), alpha channel transparency (like PNG) and animation (like GIF) — all in one format. This makes WebP a universal replacement for all four legacy formats on the web. You no longer need different formats for different use cases. Convert everything to WebP and serve smaller, faster files across your entire site.
Your images never leave your device
Every conversion runs locally in your browser using the Canvas API and JavaScript. No image is uploaded to any server, transmitted over the network or stored anywhere. The tool works without an internet connection after the initial page load. This makes it safe for converting personal photos, confidential client assets, product images and any content you cannot share with external services.
Questions about this online WebP converter
Yes — completely free. No account, no payment, no watermark, no daily limit. Conversion runs in your browser so there are no server costs.
WebP files are 25–34% smaller than JPEG at equivalent visual quality. A 200 KB JPG typically becomes 130–150 KB as WebP. For PNG sources, WebP lossless is 26% smaller; WebP lossy can be up to 50% smaller than PNG for photographic content.
Yes. Smaller images improve page load speed. Faster pages improve Core Web Vitals scores, especially LCP. Google uses Core Web Vitals as a ranking signal. Google PageSpeed Insights explicitly recommends converting to WebP. The improvement is real and measurable in both Lighthouse scores and search rankings.
Yes. All conversion runs locally in your browser using the Canvas API. Your images never leave your device — no upload, no server, no third-party access. Safe for personal and confidential content.
Yes. Upload any number of files and click "Convert All". All files are processed in parallel in your browser. Download individually or use "Download All" for a ZIP archive.
WebP is supported by 97%+ of browsers globally — all modern versions of Chrome, Firefox, Edge, Opera and Safari (since version 14). The compatibility gap that existed before 2020 is no longer a practical concern for web development.
For web delivery, yes. WebP lossless is 26% smaller than PNG at identical quality. WebP also supports transparency, so it replaces PNG for graphics needing transparent backgrounds with smaller file sizes. Keep PNG for desktop applications and printing where WebP support is limited.
This tool adds batch conversion with "Download All" as ZIP — Squoosh handles one image at a time. Both run in-browser with no upload. For converting many files at once, this tool is faster and more practical.
Yes. After the page loads, all conversion runs locally on your device. No internet connection required.
Yes. Open the tool in Safari (iPhone) or Chrome (Android), upload images and download the converted WebP files. No app required.
Ready to convert your images to WebP?
Convert Images to WebP