Convert JPG photos to WebP for a faster website or blog: same pixels, smaller files. Free, in your browser, nothing uploaded.
This JPG to WebP converter changes JPG photos into WebP files in your browser, for free. WebP is the image format made by Google for the web, and every current major browser shows it. If you convert JPG to WebP, the same photo usually takes far fewer bytes, so a shop, blog, portfolio or recipe page loads sooner and uses less of your visitors’ mobile data. Page-speed tools often suggest exactly this as “serve images in modern formats”. Here you can convert JPG to WebP one by one or 30 at once, set the quality, see the old and new size for every photo and download a ZIP. Below we show real numbers from our own test, explain how the quality slider works, and tell you where WebP is the wrong choice, so you keep your JPG files where they still matter.
Your browser decodes the JPG into pixels and turns phone photos upright using the orientation stored in the photo. The tool draws the pixels onto a canvas of exactly the same width and height and saves it as WebP with the browser’s built-in WebP encoder at the quality on the slider: 92% by default, anything from 50% to 100% under More options. The output is lossy WebP, the kind made for photos. The name keeps its first part, so beach.jpg becomes beach.webp, which makes it easy to swap images on your site. Before it starts, the tool checks that your browser can actually write WebP; older Safari versions can’t, and then the page says so instead of giving you a wrong file.
Worked example (measured). On 3 November 2026 in Chrome on a Windows PC we converted a 2000×3000 test JPG of 672.9 KB. As WebP it became 289.0 KB at 92%, 209.6 KB at 85%, 180.0 KB at 80% and 147.9 KB at 70%. A smaller 600×900 JPG of 107.8 KB became 73.6 KB at 92% and 43.3 KB at 80%. Width and height never changed.
Drop, choose or paste (Ctrl+V) JPG or JPEG files into the box, up to 30 at once. Phone photos are turned upright automatically.
WebP is preselected at 92%. Open More options and try 80% to 85% for website photos; the sizes update as you move the slider.
Click Download on each row, or Download all (ZIP). Copy summary copies every name with its size before and after.
In our test a 672.9 KB JPG became 289.0 KB as WebP at 92% and 180.0 KB at 80%, with the same 2000×3000 pixels.
Each row shows the old and new size and the pixel size, so you see at once whether the change is worth it for that photo.
Convert a product folder or a blog post’s photos, up to 30 at once, and save them all in a single ZIP with the same names.
Photos are converted on your own device. No upload, no sign-up, no watermark and no usage limit.
The saving depends on the photo and on how strongly the JPG was already compressed. These are our measured results against the original JPG files:
| Original JPG | WebP at 92% | WebP at 80% |
|---|---|---|
| 2000×3000, 672.9 KB | 289.0 KB (57% smaller) | 180.0 KB (73% smaller) |
| 600×900, 107.8 KB | 73.6 KB (32% smaller) | 43.3 KB (60% smaller) |
The smaller JPG had been saved at a lower quality to begin with, so it had less to give at 92%. That is the general rule: the more “fat” a JPG has, the more WebP removes. If a WebP comes out only a few percent smaller, keep the JPG.
The Quality slider makes files smaller, but it can’t promise a size. When you need a WebP under a fixed limit, use the image compressor and choose WebP under More options: it searches for the highest quality between 50% and 92% that fits, and only reduces the pixel size if it must. WebP really helps here. In our measured test, compressing the same 2000×3000 photo to 50 KB gave a JPG of 633×950 pixels at quality 61%, but a WebP of 718×1076 pixels at quality 78%. For the same 50 KB, WebP kept about 28% more pixels and a higher quality setting.
The list converts again every time you move the slider, so try two or three values on your own photos and compare the sizes in the rows.
The biggest win for page speed is often not the format but the pixel size. A 4000 px wide photo shown in a 1000 px column wastes most of its bytes, whatever the format. Resize first with the image resizer, which can save WebP directly (choose it under More options), and set the width to the largest size your site shows the picture at. Then the WebP saving comes on top.
| JPG | WebP | |
|---|---|---|
| Size for the same photo | Larger | Smaller (43% at quality 92 in our test) |
| Web browsers | All | All current major browsers |
| Older apps, editors and upload forms | Practically all | Not always |
| Transparency | No | Yes |
| Best use | Sharing, printing, official forms | Images on your own website or blog |
WebP is excellent on your own website, but many job, exam and government portals, print shops and older programs still ask for JPG. Treat the WebP as the web copy and keep the original JPG files in a safe folder. If you ever need a JPG again, start from that original; converting a WebP back with WebP to JPG works, but each round of lossy compression costs a little detail.
This page is set up for JPG, but you can drop other images too: PNG, HEIC photos from an iPhone, AVIF, GIF (first frame) and BMP are all opened and saved as WebP. For logos and graphics with a transparent background, the PNG to WebP page explains how transparency is kept.
The width and height are kept exactly, and the quality is what you set. Some honest limits:
Typical online JPG to WebP converters upload your photos to a server and send WebP files back. This one uses your own browser’s WebP encoder, so the photos are converted on your device and never travel over the internet. That is faster for a batch of large photos, keeps unpublished product shots and client pictures private, and works offline once the page has loaded.
We also show the numbers that matter for page speed instead of a vague “optimised” label: the size before and after for every photo, the exact pixel size, and the quality you chose. If WebP doesn’t help a particular photo, you can see that in its row and keep the JPG.
The tool reads each file’s size in bytes and its width and height, converts it at the quality on the slider and shows the new size and pixel size; 1 KB is 1000 bytes. Copy summary copies those numbers for your notes. We do not measure visual quality with a score, pick a quality for you, make lossless WebP, resize, or collect anything about your photos.
| VidHaul | Typical upload-based sites | |
|---|---|---|
| Upload needed | No, it runs on your device | Yes, every photo |
| Files per batch | Up to 30, with ZIP download | Often limited on free plans |
| Quality control | Slider 50% to 100%, sizes shown live | Sometimes fixed or hidden |
| Watermark | Never | Sometimes on free plans |
| Sign-up | Not needed | Sometimes needed for batches |
| Works offline after loading | Yes | No |
| Privacy | Photos never leave your device | Photos are usually stored on a server for a while |
Only convert images you own or have the right to use.
Drop your JPG photos into the box at the top of this page. WebP is preselected, so they are converted at once; click Download or Download all (ZIP).
Use this page: you can drop JPG, PNG, HEIC, AVIF and other images into it, and it saves them as WebP in your browser and costs nothing. No sign-up and no watermark.
For websites, usually yes: in our test WebP was 34% to 43% smaller than JPG at the same quality setting. For sharing, printing and upload forms, JPG is safer because everything accepts it.
Both formats are lossy, so the photo is compressed once more. At 80% to 92% the change is very hard to see; avoid converting the same picture back and forth many times.
If the JPG was already strongly compressed, little is left to save. Try a lower quality under More options, resize the photo first, or keep the original JPG.
Recent Photoshop versions can save as WebP. If you only need the format change, this page does it for a whole batch without opening an editor.
Yes. Lower the Quality slider to make files smaller. For an exact limit such as 50 KB, use the image compressor and choose WebP under More options.
Some older Safari versions can show WebP but can’t create it. The page tells you; switch to JPG or PNG, update Safari or use another browser.