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Convert JPG to WebP

Make photos for your website about a third smaller by converting JPG to WebP at the quality you choose; the conversion happens on your device.

Drop JPG imagesJPG → WebP · other image formats work too · or click to browse
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JPG to WebPの使い方

  1. 1

    Drop your JPGs

    Add up to 10 .jpg or .jpeg photos of up to 25 MB each, for example images for a blog post or an online shop.

  2. 2

    Pick a quality

    WebP at quality 90 is preselected; 75–85 is a common sweet spot for web photos. Lossless keeps the decoded pixels exactly.

  3. 3

    Check the savings

    Each card shows the WebP's size; the status bar adds up the whole batch.

  4. 4

    Download and upload

    Save the .webp files or converted-webp.zip and replace the JPGs on your site.

制限と Pro

Up to 10 JPG photos per batch, 25 MB each, at full resolution.

Pro converts batches of up to 500 photos of up to 4 GB each. Pro を見る

JPG to WebP について

For photos on a website, WebP is the practical upgrade from JPG. At the same visual quality it is usually around 25–35% smaller, according to Google's comparison study, and every current browser displays it. Smaller images mean faster pages, less mobile data for your visitors and better Core Web Vitals, which is why page-speed audits so often suggest serving images in modern formats.

This page decodes each JPG, turns it upright using its orientation tag and encodes it with libwebp, the reference encoder. Lossy mode is preselected at quality 90; on most photos you can go down to 75–85 without a visible difference and save even more. Lossless mode stores the decoded JPG pixels exactly, but for photos it produces files larger than the JPG, so it is rarely the right choice here. The dimensions don't change, and EXIF metadata such as the camera, capture date and GPS position is dropped, which also trims a few kilobytes and keeps private details off your site.

Converting a JPG means compressing an already compressed picture a second time, so start from the best version you have, ideally the camera original rather than a small copy. Re-encoding doesn't fix existing artefacts, and very low quality settings make them worse. Keep the JPGs for sending to people and printing: WebP is meant for publishing on the web, while some desktop software, email clients and print services still expect JPG. For the smallest files of all, AVIF is available under Convert to as well.

プライバシー

Your JPGs are decoded and re-encoded by libwebp in a WebAssembly Web Worker inside this browser tab. They never leave your device, and their names, contents and locations aren't sent or stored.

主な機能

About a third smaller

WebP needs fewer bytes than JPG for the same look.

Faster pages

Lighter images help Core Web Vitals.

EXIF removed

No GPS or camera data published by accident.

Batch to ZIP

Convert up to 10 photos at once.

JPG to WebP：よくある質問

How much smaller is WebP than JPG?
For photos at a similar visual quality, typically 25–35% smaller. The exact saving depends on the image and the quality you choose: detailed landscapes compress less, smooth portraits and product shots more. Each card shows the WebP size after conversion, and lowering the quality from 90 to around 80 usually saves a further chunk without a visible change.
Does converting JPG to WebP reduce quality?
Very slightly, because a lossy file is compressed again. At quality 85–90 the difference is practically invisible; at 50 or below, blur and smudged textures appear. The conversion can't remove artefacts that the JPG already has, so convert from the original or the largest copy you have, not from an image that was already downsized and compressed.
What WebP quality should I use for my website?
A setting between 75 and 85 suits most photos on web pages, giving files much smaller than the JPG with no visible loss at normal viewing size. Use 90 for hero images and portfolios where people look closely, and lossless only for graphics. Resize photos to the width they are displayed at before converting, which often saves more than the format change.
Can every visitor see WebP images?
Almost all: Chrome, Edge, Firefox, Opera, Samsung Internet and Safari since version 14 display WebP, which covers essentially every browser in use today. If you must support very old devices, keep the JPG as a fallback with the HTML picture element. For emails and downloads, JPG remains the safer choice, since some mail and desktop apps don't open WebP.
Should I use lossless WebP for photos?
Rarely. Lossless WebP stores the decoded JPG pixels exactly, including the original compression noise, so a photo usually ends up larger than the JPG it came from. It is meant for graphics such as logos and screenshots. For photos, lossy WebP at quality 75–90 gives the size reduction that is the reason for converting in the first place.

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