Convert JPG to WebP Joint Photographic Experts Group ↔ WebP Free Online Secure
The picture is redrawn once at its original size and saved as WebP. Nothing is resized, and the file never leaves your device.
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Drop a JPG here, or choose one.
Your file never leaves this device. Everything runs in your browser.
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Where these formats come from
Each of these formats was written to solve a different problem. JPEG arrived in 1992 from the Joint Photographic Experts Group and was built for photographs: it discards the detail the eye is least likely to miss, which is why a photo shrinks enormously and why text in a JPEG looks smudged. PNG was written in a hurry in 1996, after the company holding the patent behind GIF began charging for it; it is lossless and has real transparency, which is why logos and screenshots belong in it. WebP came from Google in 2010 and does both jobs, typically a quarter smaller than either. BMP is Microsoft's plain format with no compression at all, and HEIC, Apple's default since 2017, borrows video compression to store a still at about half the size of a JPEG.
Where you meet them
Photographs travel as JPEG or, straight off a recent iPhone, as HEIC. Anything with sharp edges — screenshots, logos, diagrams, text, anything needing a transparent background — belongs in PNG, where JPEG would blur the edges. WebP is what a modern website serves to save bandwidth. BMP survives mostly inside Windows software and in places where a program wants pixels with no decoding at all.
Questions people ask
Should I save this as PNG or JPEG?
Look at the edges. A photograph has no hard edges, so JPEG's way of discarding detail is invisible and the file ends up a fraction of the size. A screenshot, a logo, a chart or anything with text has hard edges, and JPEG leaves a visible halo around every one of them — that is where PNG belongs, even though the file is larger. If the image needs a transparent background, PNG is the only choice of the two.
Why will nothing open my HEIC photos?
Because HEIC is newer than most of the software people have. It has been the iPhone default since 2017, but Windows needs an add-on to show it, many Android phones will not, and a great deal of web software still rejects it outright. Converting to JPEG is the usual answer: the photograph is unchanged to the eye, the file is roughly twice the size, and everything made in the last thirty years can open it.
Does the file lose quality?
It depends on what the two formats can hold. Converting between formats that store the same thing — a PNG to a BMP, a WAV to a FLAC — loses nothing. Converting into a format that throws information away to save space, such as JPEG or MP3, loses a little every time, and converting back does not bring it back. Where a choice exists, this page errs towards keeping the original quality rather than making the smallest file.
Is my file uploaded anywhere?
No. The conversion happens inside your browser, on your own machine; the file never leaves it and there is no server here that could receive it. That is why a large file is limited by your own memory rather than by an upload, and why nothing you convert can appear in anybody's logs — including ours. The audio and video tools do fetch their conversion engine from this site the first time you use them, some thirty megabytes once; after that the work still happens entirely on your machine.
Why people convert JPG to WebP
WebP is a newer image format designed for the web. Its promise is simple: pictures that look the same as a JPG but take noticeably less space. For anyone who runs a website, a blog or an online shop, smaller images mean pages that load faster, less bandwidth used and happier visitors, and faster pages also tend to rank better in search results. That is the main reason people convert JPG to WebP: they have a library of photographs, they want them lighter, and they are willing to use a format that all current browsers understand.
There are other reasons. Some content systems and website builders recommend WebP, or even warn about large JPGs. Some people simply want to save storage on a phone or a server. And some are curious whether the saving is real. It is, typically, though how much depends on the picture. The conversion is also easy to try: one photo in, one WebP out, and you can compare the two.
This page converts JPG to WebP in your browser. Your picture never leaves your device, which matters for photographs of people and anything private. Below you will find how the conversion treats your picture, why it is not free of cost in quality, which software may not open the result, and when it is worth doing.
What the conversion keeps
Every pixel and the exact dimensions
When you convert JPG to WebP here, the picture is redrawn once at its original size and saved as WebP. Nothing is resized, cropped or stretched. A photograph of 4000 by 3000 pixels is still 4000 by 3000 pixels afterwards. The new file simply stores those pixels using WebP's own compression.
The same look on screen
At sensible settings, the WebP looks like the JPG did. The colours, brightness and composition are unchanged, and you will not usually be able to tell the two apart at normal viewing size. The difference is in the file size, not in what you see.
What "redrawn once" means
The converter opens your JPG, reads its pixels and writes them out in WebP form. That single pass is the only step. The size is not changed, so nothing is resampled; the only change is the way the pixels are packed into the file, which is where the saving, and a small loss, happen.
What it costs
WebP is lossy, like JPG
This is the honest part. WebP, in the form used for photographs, is a lossy format like JPG: to get small, it discards detail. Your JPG has already lost some detail when it was first saved. Converting it to WebP discards a little more on top. The extra loss is usually small and, at normal viewing sizes, invisible, but it is real, and it cannot be undone.
For that reason, keep the original if you will edit the picture again, print it large or might need the best quality later. Treat the WebP as a delivery copy, the version you put on the web, and the JPG as the master. If you ever want to redo the conversion at a different quality, you can do it again from the JPG.
Do not convert in circles
Avoid chains such as JPG to WebP to JPG to WebP. Every pass through a lossy format costs a little more detail. If you need both formats, make each from the original JPG, not from a copy of a copy.
Where WebP may not open
Older software that predates WebP
All current browsers display WebP, and so do most up-to-date apps and operating systems. But older software that predates the format may not open it at all: an old photo viewer, an out-of-date email program, a legacy content system, a printing service with an old pipeline. If the picture will go to such a place, a JPG is still the safe choice.
How to decide
Use WebP when the destination is a modern website or app. Use JPG when you are not sure where the picture will end up, or when it is going to a person or a service you do not control. Many sites keep both: a WebP for modern browsers and a JPG as a fallback.
A rule of thumb
If you control the destination and it is current, WebP is a good choice. If you do not, JPG is the format that works everywhere. Converting JPG to WebP is a decision about where the picture is going, not about the picture itself.
How much smaller will it be?
The saving varies with the picture, but a WebP is commonly a quarter to a third smaller than a JPG of similar visual quality. A 400-kilobyte photograph might become 280 or so. For a site with hundreds of images, that adds up to a significant reduction in the amount of data each visitor must download.
The saving is greatest for pictures with smooth areas and gentle detail, and smaller for highly textured ones. If you want a bigger reduction still, reduce the resolution too, using the JPG compressor before converting, so that the picture is not larger than the space it will fill.
What JPG and WebP each are
JPG, also written JPEG, has been the standard photograph format since the early days of digital cameras. It stores a picture as a grid of coloured dots and keeps files small by discarding detail the eye is unlikely to miss. It works everywhere, and it has done for decades. WebP was introduced much later, with the web in mind. It uses a more modern way of describing a picture, which can reach the same visual quality in a smaller file, and it can also carry transparency and simple animation, which JPG cannot.
When you convert JPG to WebP, you move a photograph from the format that works everywhere to the format that works efficiently on the modern web. The picture is the same; the packaging is lighter. Whether that trade is worth making depends on where the picture is going, which is why this page spends some time on when to do it and when not to.
Why the web cares so much about image weight
On most websites, images make up the largest share of the data a visitor must download. Heavy images slow pages, burn mobile data and push visitors away. Search engines take page speed into account, so lighter images help a site be found. If you can reduce every photograph on a page by a quarter without anyone noticing, you have improved the site for everyone, at no cost in appearance. That is the appeal of converting JPG to WebP in a sentence.
Using WebP on a website
Most modern website builders and content systems accept WebP directly: you upload the file as you would a JPG. Some automatically convert uploaded images for you, in which case you may not need to do it yourself. If yours does not, converting JPG to WebP before uploading gets you the benefit by hand.
If you are building a site yourself, a common technique is to offer both: a WebP for browsers that understand it and a JPG as a fallback for any that do not. Today almost every browser in use understands WebP, so the fallback is rarely needed, but it is good practice for sites that must serve very old devices. Whichever approach you take, always keep the original JPGs, since you may want to regenerate the WebPs at a different quality later.
Choosing the right size first
WebP makes a picture lighter, but it does not make it smaller in pixels. If your photograph is 4000 pixels wide and your page shows it at 800, you are still sending five times more pixels than needed. Reduce the image to a sensible width first, then convert JPG to WebP. The combination of right size and efficient format gives the biggest gain.
Photos on your phone or computer
WebP is not only for websites. If your phone or computer is full of photographs you rarely look at, converting some of them can free space. The saving is moderate rather than dramatic, so for personal archives it is worth considering mainly if storage is tight. Before you do, check that the programs you use to view and edit pictures can open WebP; most current ones can, but older gallery or editing tools may not.
For photographs you care about most, keep the original JPG or, better, the original file from your camera, and make WebP copies only for specific purposes. A lossy copy of a lossy copy is the worst of both worlds, and the camera original is the one you cannot recreate.
Mixing formats in one folder
If you end up with both JPG and WebP versions of the same picture, give them clear names or keep them in separate folders, so you always know which is the master and which is the delivery copy. That small discipline prevents the common mistake of editing the lossy copy and losing the original.
How to convert JPG to WebP here
Add your picture
Drop the JPG onto the page or pick it from your device. It is read inside your browser and is not uploaded.
Convert
Press the button. The picture is redrawn once at its original size and saved as WebP. For an ordinary photograph this takes a moment.
Download and compare
Download the WebP and open it beside the JPG. Check the dimensions are the same, compare the file sizes and look at the two at the size you will use. If you cannot tell them apart and the WebP is smaller, it has done its job.
Questions people ask before converting
Will the quality drop?
Slightly. WebP is lossy like JPG, so a little more detail is given up on top of what the JPG had already lost. At normal viewing sizes it is rarely visible.
Will every program open it?
All current browsers do, but older software that predates WebP may not. Use JPG where you are unsure.
Is the file smaller?
Usually, often by a quarter to a third at similar visual quality. The exact saving depends on the picture.
Is my picture uploaded?
No. Everything runs in your browser and the picture never leaves your device.
Who converts JPG to WebP
Website owners and bloggers
Lighter images mean faster pages, which helps visitors and search rankings alike.
Online shops
Product catalogues with hundreds of photographs benefit most from the saving in data.
Developers and designers
Modern build tools and guidelines often recommend WebP, and converting gets existing photographs into that form.
Common mistakes
Deleting the original JPG
Keep it. It is the better master, and you may need it for places that do not accept WebP.
Converting back and forth
Each lossy pass costs detail. Make each format from the original.
Sending WebP to people with old software
Use JPG for general sharing. Reserve WebP for websites and modern apps.
Related tools
To go the other way, convert WebP to JPG or WebP to PNG. For smaller JPGs, compress JPG. For images with sharp edges and transparency, PNG to WebP is the matching route. To put pictures in a document, JPG to PDF, and for editing without further loss, JPG to PNG.
When to convert JPG to WebP, and when not to
Converting is right when the picture is going to a modern website or app and you want it lighter. It is the wrong move when the picture is going to a person or a service you do not control, in which case JPG is the format that always works. It is also wrong for pictures you will edit again, where a lossless working copy such as a PNG is safer, and for pictures that are already tiny, where the saving is too small to matter.
For the common cases, such as blog photographs, product images and page graphics, it is quick, private and effective to convert JPG to WebP in the browser. Your original is never changed, so you can come back and convert JPG to WebP again whenever you like. For images with transparency or sharp edges, such as logos, use PNG to WebP rather than starting from a JPG.
Batches of pictures
If you have many pictures to convert, do them one at a time and keep the originals in a separate folder. Try one first and check it at the size you will use, so you do not have to redo fifty of them. When you convert JPG to WebP in bulk, consistency matters more than speed.
If something does not open
If a program or service refuses a WebP, go back to the JPG, or convert the WebP to JPG with the WebP to JPG converter, accepting that the result is a copy of a copy. Better still, convert again from the original JPG to avoid any extra loss. This is another reason to keep the JPGs: they are the format that always works.
Large pictures and slow devices
Everything runs on your own device, so very large pictures depend on its memory. A twelve-megapixel photograph is no trouble for a modern phone or computer. A very large panorama may be slow on an older device. If it struggles, give the browser a moment and avoid switching to other apps while it works.
Checking the result properly
After you convert JPG to WebP, open both files side by side at the size you will actually use. Look closely at edges and smooth gradients, where lossy compression shows first. If they look the same and the WebP is smaller, you have what you wanted. If you see banding or fuzz, try a larger original or leave that picture as a JPG.
Your picture stays on your device
The conversion happens locally. Your picture is read by your own browser, written as WebP there and handed back. Nothing is uploaded, so there is no copy on a server and no one else who could see it. For photographs of people and private pictures, that is the safe way to convert JPG to WebP.
A worked example
Say you run a small shop and have a product photograph saved as a JPG of 1600 by 1200 pixels and 420 kilobytes. You drop it here and convert it. You download a WebP of the same dimensions and about 290 kilobytes, which looks identical on your product page. Multiplied across two hundred products, you have saved about 26 megabytes of data per visitor on a full catalogue browse. You keep the original JPGs in a folder as masters.
Before you close the page
Check that you downloaded the WebP, that it looks right at the size you will use and is smaller than the JPG, and that you kept the original.
Summary
To convert JPG to WebP here, drop the picture and press the button. Every pixel of the image and its exact dimensions are kept. WebP is a lossy format like JPG, so a little more detail is given up on top of what the JPG had already lost, and older software that predates WebP may not open the result. Keep the original if you will edit the picture again. Nothing leaves your device.