Convert JPEG images to WebP — 25 to 34% smaller at the same visual quality. Batch convert with an adjustable quality slider. Runs entirely in your browser.
Last updated: August 2026
25-34%
Smaller than JPEG
Batch
Multiple Files
60-95%
Quality Range
Private
No Uploads
Drop JPG files here or click to browse
Supports .jpg and .jpeg — all processing stays in your browser
Four steps, all running locally in your browser.
Set your quality first (optional)
The slider runs from 60% to 95%, default 82%. Set it before dropping files if you want one consistent quality across a whole batch.
Drop your JPG or JPEG files
One file or many at once. Nothing is uploaded, it all stays on your device.
Conversion starts automatically
There's no separate convert button. Each file begins converting the moment it's added, and files process independently.
Download
Download a single file directly, or grab every converted file at once as a ZIP.
JPEG was designed in 1992. It has been the default photo format for three decades because nothing better was widely supported. WebP was developed by Google and achieves 25 to 34% smaller file sizes than JPEG at the same visual quality using a more modern compression algorithm.
For a website with 20 images averaging 400KB each, switching from JPG to WebP saves roughly 2.5MB of data per page load. That translates directly into faster load times, lower bandwidth costs and better scores in Google Lighthouse, which affects search rankings.
Website images
Replace JPG images on product pages, blog posts and landing pages with smaller WebP equivalents.
Core Web Vitals
Google Lighthouse flags JPEGs as a performance opportunity. WebP is the recommended replacement.
E-commerce product photos
Faster product image loading reduces bounce rate and improves conversion on mobile devices.
Blog content images
Inline images load faster on slow connections, improving reader experience and time on page.
WebP is supported by Chrome, Firefox, Safari, Edge and Opera, covering over 97% of global browser usage. Safari added support in version 14 (2020). Internet Explorer never supported WebP but has had essentially zero usage since Microsoft ended support in 2022.
For most websites today, serving WebP images without a fallback is safe. If you need to support very old Safari versions, you can serve WebP to modern browsers and JPG as a fallback using the HTML picture element. The Core Web Vitals guide covers implementation in detail.
Waiting for a "Convert" button
There isn't one. Conversion starts automatically the instant a file is dropped or selected, so watch the per-file status badge rather than looking for a button to click.
Adjusting quality after files are already converted
The quality slider is only read at the moment a file starts converting. Files that already finished keep the quality they were converted at — moving the slider afterward only affects files you add from that point forward. Set the quality you want before dropping your batch.
Dropping an unsupported file type and assuming it failed silently
This page only accepts .jpg and .jpeg files. Drop a PNG or another format here and nothing happens at all — no error message, no entry added to the list. If a file doesn't show up after dropping it, check the extension.
Downloading a large batch one file at a time
Once more than one file finishes converting, a "Download all" button appears and packages everything into a single ZIP. No need to click Download on every row individually.
Assuming WebP works absolutely everywhere with zero exceptions
WebP coverage is excellent — well over 97% of browsers in use today — but very old browsers (pre-2020 Safari, legacy Internet Explorer) don't support it. Fine for almost every audience, worth a fallback only if you specifically support very old software.
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WebP produces files that are typically 25 to 34% smaller than JPEG at the same visual quality, based on Google's benchmarks. For a 500KB JPG, the equivalent WebP is usually around 330 to 375KB. The savings vary by image content — photographs with complex detail compress more than flat or simple images.
Yes. Smaller image files reduce page weight, which directly improves load time and Core Web Vitals scores. Google Lighthouse flags large JPEGs as an optimisation opportunity and recommends modern formats like WebP. Switching images from JPG to WebP is one of the highest-impact changes you can make to web performance without changing how images look.
Yes, effectively. WebP has been supported by Chrome, Firefox, Safari, Edge and Opera since 2020 (Safari added support last, in version 14), covering over 97% of global browser usage. It is safe to use WebP on websites without a fallback for almost all visitors.
At the default quality setting of 82%, the output WebP is visually indistinguishable from the original JPG for most images at normal viewing sizes. WebP uses a different compression algorithm that achieves better file size at the same visual quality. Use the slider, which runs from 60% to 95%, to raise quality if you need to preserve fine detail.
The quality setting is applied to each file at the moment it starts converting, which happens automatically as soon as it's dropped. Moving the slider afterward will not re-encode files that already finished — only files you add from that point on will use the new setting. Set the quality you want before dropping your batch if you need it applied consistently across every file.
No. All conversion happens entirely in your browser using WebAssembly. Your images never leave your device. You can verify this by disconnecting from the internet after the page loads, conversion still works.
Yes. Drop multiple JPG files at once or select them from the file picker. Each file converts independently, so one failure doesn't stop the rest. Download files individually or grab them all at once as a ZIP.
No sign-up. No uploads. Drop your files above and download WebP in seconds.
