Convert JPG to WebP with smart lossy/lossless mode — 25-50% smaller files
WhiskFile JPG to WebP is a free online tool to convert JPG to WebP with smart lossy/lossless mode — 25-50% smaller files. Files are processed entirely in your browser — nothing is uploaded to any server.
Quick Answer
Convert JPG to WebP with smart lossy/lossless mode — 25-50% smaller files. WhiskFile's JPG to WebP is free, works in your browser, and requires no account. Your files never leave your device — all processing happens locally.
Upload JPG files
Select or drag and drop JPEG images. Each file is automatically analyzed as photo or graphic.
Choose compression mode
Pick Lossy (25-50% smaller) or Lossless (pixel-perfect). WhiskFile auto-recommends the best mode.
Review smart recommendation
Check the auto-detected photo/graphic badge and Switch button if a different mode would work better.
Adjust quality & resize
Fine-tune lossy quality with presets or slider. Optionally resize output with scale presets.
Review savings per image
Check the per-image savings badge showing exact file size reduction percentage.
Download WebP
Download individual WebP images or grab all as a ZIP file.
Max file size: 50 MB (free) · 500 MB (paid). Processing time: ~1s on average. Batch processing: upload multiple files at once.
JPG to WebP runs entirely in your browser — no software to install. Works on any device with a modern browser.
Windows & Mac
Chrome, Firefox, Edge, Safari
iPhone & Android
Safari, Chrome mobile
iPad & Tablets
Full touch support
Unlike server-based tools that upload your documents, WhiskFile processes everything locally in your browser. Your files never leave your device — not even temporarily.
No upload required
Files are processed in your browser — nothing is sent to any server
100% private
No server storage, no data collection, no third-party access
Works offline
Once loaded, works without an internet connection
“Batch-converting RAW exports to web formats saves me hours every week. The quality is excellent.”
Carlos Ruiz
Photographer
“Resizing and converting images for different platforms used to be tedious. Now it's drag and done.”
Priya Sharma
Social Media Manager
Help us improve by sharing your experience with JPG to WebP.
Client-side processing
This tool now runs entirely in your browser — files never leave your device.
Result preview & sharing
Preview your processed file before downloading, and share results via a secure link.
In lossy mode, WebP files are typically 25-50% smaller than JPEG at equivalent visual quality. Google's WebP format uses more advanced compression techniques than the older JPEG standard.
Lossy mode produces smaller files with imperceptible quality differences (best for photos). Lossless mode preserves every pixel exactly as decoded from the JPEG — the WebP file may be larger than the original JPG since lossless compression of photographic data is less efficient.
WhiskFile analyzes the color complexity of each image by sampling unique colors. Photos (>500 unique colors) are recommended for Lossy mode, while graphics/screenshots with fewer colors are recommended for Lossless.
In Lossy mode, WebP re-encodes the image, so there is a slight additional quality loss. At 80%+ quality, the difference is imperceptible. In Lossless mode, the output is pixel-identical to what your browser decoded from the JPEG.
Yes, all modern browsers support WebP: Chrome, Firefox, Safari (14.1+), Edge, and Opera. For legacy browser support, keep the original JPEG as a fallback.
Yes. All conversion happens in your browser using the Canvas API. Your images never leave your device — nothing is uploaded to any server.
Yes. Convert your JPG images to WebP here, then upload them to your WordPress media library. WebP images improve Core Web Vitals scores and page load speed without needing a plugin.
For most web images, 80% (Balanced) offers the best trade-off between quality and file size. Use 70% (Web) for thumbnails or non-critical images, and 90% (High) for hero images or portfolios.
No. Since all processing happens in your browser, there are no file count limits, no daily quotas, and no signup required. Convert as many JPG files as you need.
Yes. The converter works in any modern mobile browser (Chrome, Safari, Firefox). Select photos from your camera roll, convert them to WebP, and download the results directly to your device.
JPEG uses lossy compression optimized for photos, so a lossless re-encoding of already-compressed photo data often produces a larger file. Use Lossy mode for photos to achieve 25-50% smaller files.
Yes. Google recommends WebP for faster page loads. Smaller image files improve Core Web Vitals (LCP), which is a ranking factor. Google PageSpeed Insights specifically flags JPG images that could be served as WebP.
Once the page is loaded, all conversion happens locally via the Canvas API. You can convert JPG to WebP without an active internet connection — your images never leave your device.
Yes. JPG to WebP on WhiskFile is completely free with no account required. Free users get 7 tasks per day with files up to 50 MB. There are no watermarks on any plan. Pro plans ($4.99/month) unlock unlimited tasks, 500 MB files, batch processing, and API access.
Yes. JPG to WebP runs entirely in your browser using WebAssembly. Your files are never uploaded to any server — they stay on your device throughout the entire process. No data is transmitted, stored, or accessible to WhiskFile or any third party.
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Chromebook & Linux
Any modern browser
