Convert JPG to WebP Online Free

Turn JPG photos into WebP and shrink the size by up to 35% at the same visual quality. Supports batch conversion — select the whole folder and download it all as a ZIP. No sign-up, no file upload.

Drag one or more JPG files here

or click to browse — multiple files supported · also accepts PNG, WebP, and BMP by drag-and-drop

Convert to

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WebP —

Original format

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Final format

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Original size

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Final size

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Why switch from JPG to WebP

JPG was created in 1992 and remains the most universal format in the world. The problem is that its compression technology is over three decades old — and in that time, algorithms have emerged that do the same job using far fewer bytes.

WebP is Google’s answer to that problem. It delivers the same visual quality as a JPG using 25% to 35% less space, and it adds features JPG never had: transparency and animation. For anyone publishing images on the web, that means lighter pages with no visible sacrifice.

The conversion is especially worth it when the images are going onto a website, online store, or blog. Images usually account for more than half a page’s weight, so cutting a third of that volume has a direct impact on load time and Core Web Vitals metrics. But if the image will be attached to a form, printed, or opened in an old program, keep it as JPG — compatibility is still unbeatable.

Criterion	JPG	WebP
Size of a typical photo	Reference	25% to 35% smaller
Transparency	No	Yes
Animation	No	Yes
Browser support	100%	Over 96%
Support in old software	Universal	Limited
Best for	Attachments, printing, archiving	Websites, blogs, e-commerce

Why use this converter?

Total privacy

Conversion happens right in your browser. No file is ever sent to an external server.

Batch conversion

Select dozens of images at once and download them all converted in a single ZIP file.

Instant preview

See the converted image before downloading, with the final size shown in real time.

Works offline

Once the page has loaded once, the tool keeps working even without an internet connection.

How to convert JPG to WebP step by step

Start by loading your images. Drag the JPG files into the dashed area at the top of the page, or click it to open your system’s file picker, already filtered to show only JPG and JPEG files. There’s no limit on quantity or size, and this detail matters a lot here: since converting to WebP is usually done to optimize an entire site, the most practical approach is selecting the whole image folder at once. As soon as the files come in, conversion starts on its own, with no confirmation button.

With a single file, the tool opens in Single image mode and shows the WebP preview along with four indicators: original format, final format, original size, and final size. Compare the last two closely — they reveal the real savings for that specific image. With two or more files, the tool automatically switches to Batch mode and shows a table with one row per image, listing name, original size, converted size, and a status dot that turns green as each conversion finishes. It’s the fastest way to measure how much lighter the whole site will get.

The target format on this page is already set to WebP, so there’s usually nothing to adjust. If a specific image ends up larger as WebP than the original JPG — which can happen with very small or already heavily compressed photos — just click JPEG in the buttons above the preview to keep the old file. The switch redoes the conversion instantly, with no page reload or reselecting files. The two buttons at the top of the panel also let you switch manually between single and batch mode.

To finish, download the result. In single mode, use the Download converted image button. In batch mode, the Download all converted (ZIP) button packs everything into a single file, ready to upload to your server or media library. If you only want part of the images, each table row has its own download button and an X to discard that item before generating the ZIP. All conversion runs in the browser, with no upload to a server.

Frequently asked questions

How much smaller does the file get when converting JPG to WebP?

For photos, the reduction is usually between 25% and 35% at the same visual quality. An 800 KB JPG typically becomes a 500 to 600 KB WebP. The gain varies with the image content — the preview shows the final size before you download, so you can compare right away.

Do all browsers open WebP?

Yes, all modern browsers. Chrome and Firefox have supported it for years, Edge since 2018, and Safari since version 14, released in 2020. In practice, over 96% of users in 2026 can view WebP with no issues at all.

Does converting JPG to WebP improve my site’s PageSpeed and SEO?

Yes, and Google itself explicitly recommends it in PageSpeed Insights. Images are almost always the heaviest item on a page, and shrinking them by 30% directly lowers LCP (Largest Contentful Paint), one of the three Core Web Vitals metrics used as a ranking factor. The effect on ranking is indirect, but the effect on experience is direct: faster pages have less abandonment and more conversions, especially on mobile.

Does WebP keep the same quality as the original JPG?

Visually, yes, for most photos. It’s worth knowing there’s a recompression involved: the JPG already discarded information, and WebP applies its own compression on top. Since WebP is more efficient, the result is usually indistinguishable with a much smaller file. For absolute maximum quality, the ideal would be generating the WebP from the original uncompressed file.

Can I use WebP on WordPress, Shopify, and other platforms?

Yes. WordPress has accepted WebP uploads natively since version 5.8, no plugin needed. Shopify, Wix, Squarespace, and the major e-commerce platforms support it too. Some old themes or plugins may still reject the format on upload — in that case, update the theme or keep JPG only where it’s blocked, serving WebP on the rest of the site.

Can I convert several JPG files to WebP at once?

Yes, and it’s actually the most common use case. Drag your entire site’s image folder into the upload area: the tool switches to batch mode, converts everything, and unlocks a single ZIP download. Each row in the table shows the size before and after, so you can measure the total savings.

Does the tool work on mobile?

Yes. It works in any modern browser — Android, iPhone, tablet, or computer — no app install needed.