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Convert JPG to WebP, Smaller Files in Seconds

Turn any JPEG into a lighter WebP and cut file size by 25 to 34 percent. Drop one file or several at once.

or drop the image here

The preview stays on your device. Nothing is recorded until you capture.

Quick answer

Convert JPG to WebP right from the browser tab. Drop a JPEG and your browser re-encodes it as WebP, then hands you the download in about a second, with a single image converting on your own machine and nothing uploaded. WebP compresses photos more cleverly than JPEG, so files usually come out 25 to 34 percent lighter than the source, and our own tests confirm that figure on a range of real photos. At the near-exact quality used here the visual difference is invisible on photographs at any normal viewing distance. Lighter images load faster, which helps your Largest Contentful Paint score. Want to convert several at once? Drop them together and they go to our server to process as a batch, where the download link is removed within about 2 hours.

How to convert JPG to WebP

How to convert JPG to WebP

Drag a JPEG onto the upload area, or click it to pick a file from your device. The conversion fires the instant the file lands. There is no Convert button to hunt for and no queue to wait through. Your browser re-encodes the photo as WebP entirely on your own hardware. When the result is ready, the stats line puts the original size and the new size next to each other so the saving is plain to see. Click Download to keep the WebP, which carries the same base name with a fresh extension. To do another photo, just drop it on top of the last one. The page never reloads, and a typical phone shot finishes in well under a second.

Why WebP comes out smaller than JPG

Why WebP comes out smaller than JPG

Both formats throw away data to shrink a photo, but WebP does it more cleverly at any given quality. Google puts the typical gain at 25 to 34 percent over JPEG, and busy real-world photos often stretch past that. Our measured runs back it up. A compact JPEG phone photo dropped to under half its original size when converted to WebP. Fewer image bytes mean a quicker Largest Contentful Paint, the loading metric Google folds into its ranking systems. WebP is also open to use, which is exactly why every big CDN serves it by default and every current browser reads it without a plugin or a download.

When WebP beats JPG and when it does not

When WebP beats JPG and when it does not

Reach for WebP on anything bound for a web page you run: hero shots, product photos, blog art, gallery thumbnails, and the preview cards your own domain serves. Every modern browser reads it, which covers more than 97 percent of traffic in 2026, Safari included since version 14. Stay on JPG when the file has to land somewhere that still expects JPEG, such as an email attachment, a print job, an older photo editor, a marketplace upload form, or a platform that quietly re-compresses WebP back to JPEG anyway. The destination decides, not the starting point. If you control where the image gets served and your audience is on recent browsers, WebP is the stronger pick in nearly every case.

Quality and the second lossy pass

Quality and the second lossy pass

Your JPEG was already compressed, so turning it into WebP stacks a second round of compression on top of the first. On paper, extra artifacts could pile up. In practice, at the near-exact quality setting used here, photos look the same as the source at any normal viewing distance. For the cleanest output, always start from the best JPEG you own, an original off the camera rather than a copy that already passed through a chat app or a CDN squeeze. Detail loss adds up with every hop. This version ships one calibrated quality level with no slider, which keeps the output predictable and removes the temptation to over-compress a photo that did not need it.

Where your file is handled

Where your file is handled

Converting one image happens right on your own machine, with nothing uploaded. If you want to check, open the Network panel in the browser developer tools and convert a single photo. You will see no outbound image request. When you convert several at once, the files go to our server to do the work together, and the download link is removed within about 2 hours. Either way the result is yours to keep, and nothing is logged or studied.

WebP browser support in 2026

WebP browser support in 2026

WebP reads in more than 97 percent of browsers worldwide today. Chrome has decoded it since version 17 back in 2012, Firefox since version 65, and Safari since version 14 on iOS and version 16 on macOS Ventura. Edge and Opera both handle it natively. The only real holdouts are Internet Explorer 11 and Safari 13, and their share is now tiny. For general web delivery you can serve WebP with confidence. If you genuinely must reach ancient browsers, pair the WebP with a JPG fallback inside an HTML picture element and let each browser pick what it can read. For email, shared drives, and print, JPG stays the safer pick.

How it works

  1. Drop or pick your JPG

    Click the upload area or drag a JPEG onto it from your desktop. The conversion starts on its own the moment the file lands, with no button to press.

  2. Let the encode run

    Your browser re-encodes a single photo into WebP in its own memory, with nothing to upload. A typical phone shot wraps up in well under a second.

  3. Read the size comparison

    When the WebP is ready, a stats line shows the old JPEG size and the new WebP size side by side so you can confirm exactly how much you saved.

  4. Download the WebP

    Click Download to save the result. The file keeps its original name and switches to the .webp extension for you, so nothing needs renaming.

Related tools you might find useful

Convert in the other direction, or explore other format options alongside WebP and JPEG.

WebP to JPG — convert back for email and print JPG to PNG — keep every detail without loss All converters — see every format pair

Frequently asked questions

Why convert JPG to WebP?

WebP makes smaller files than JPEG at the same visual quality, which speeds up page loads and lifts your Core Web Vitals. Google's own figure for WebP is 25 to 34 percent lighter than JPEG, and real photos often do better. If you manage images for a site, moving from JPEG to WebP trims bandwidth bills and can directly improve your Largest Contentful Paint, which feeds into Search ranking.

Is this conversion lossless?

No. WebP and JPEG are both compressed formats, so going from one to the other adds a second round of compression. At the near-exact quality used here the difference is invisible on photos at normal viewing distances. If you truly need a result that captures every detail without any loss, convert to PNG instead. Any tool that promises an exact JPEG to WebP conversion without any loss is wrong, since that mode is a separate WebP type meant for simple graphics, not photographs.

How much smaller are WebP files than JPEG?

In our tests a compact JPEG phone photo dropped to under half its original size when converted to WebP. A larger photo at high resolution fell to roughly a quarter. Google's published figure is 25 to 34 percent lighter than JPEG at the same quality. Very small images that are already heavily squeezed, like tiny thumbnails, tend to gain less because they sit close to the encoder's floor already.

Does WebP support transparency?

Yes. WebP carries full transparency while JPEG does not, which is one reason it suits web graphics. For a JPG to WebP job, though, there is no transparency to keep, since the source JPEG is fully opaque to begin with. If your image started life as a PNG with transparency and you want that preserved in WebP, convert straight from the PNG rather than from a flattened JPEG in the middle.

Is my image uploaded to a server?

It depends on how many. Converting one image runs entirely on your machine, with no outbound image request. You can confirm this by watching the Network panel in the browser developer tools. Converting several at once sends them to our server so they process together, and the download link is removed within about 2 hours. There is no long-term storage and no data collection either way.

Can I convert several JPGs to WebP at once?

Yes. Drop two or more JPEGs and they convert together, then come back as one download. To do this the files go to our server, which packs the WebP results into one archive and gives you a single link that is removed within about 2 hours. A single JPEG still converts right on your machine with nothing uploaded.

The details

Notes from the team on craft, formats, and the small decisions behind a good result.

How a single image converts on your machine, and what changes for several
When you drop one JPEG on the page, the browser reads the file into memory, decodes the compressed data back into raw detail with its built-in JPEG reader, draws those results into an off-screen surface, and asks the platform to write them back out as WebP. Every step happens right on your machine, so no bytes cross the network. In our runs a compact phone JPEG finishes in roughly 54 milliseconds, and a large high-resolution photo takes about 550 milliseconds. When you convert several images at once, the work moves to our server instead, which encodes them together and returns one download whose link is removed within about 2 hours.
What happens to EXIF and metadata
JPEG files can carry real metadata payloads. EXIF records the camera model, GPS coordinates, shutter speed, and orientation. IPTC fields hold copyright and caption. XMP packets track edit history, and ICC profiles cover colour-managed work. The conversion here keeps none of it. The output WebP is a clean file holding only the visible detail. That is the normal behaviour for image tools that draw through the browser, across Chromium, Firefox, and WebKit alike. For most web publishing, dropping the metadata is a plus: it trims a few bytes and stops GPS or personal data leaking into a public image. If you need one specific field kept, orientation being the usual one, rotate the photo first or use a metadata-aware editor before converting. Do not lean on this tool for archival work where the original metadata has to survive intact.
WebP versus JPEG: how the compression differs
JPEG slices an image into small square blocks and runs a Discrete Cosine Transform to turn spatial detail into frequency data, then compresses the higher frequencies harder. WebP borrows a prediction scheme from VP8 video: each block is guessed from its already-decoded neighbours, and only the leftover difference gets stored. That tends to leave fewer blocky artifacts at the same file size, especially across smooth gradients and skin tones where JPEG's grid can surface as a visible mosaic. On photos at high quality, the eye rarely catches the difference, but the size advantage holds steady. At lower quality, WebP's lead widens and the artifact character shifts: WebP smears into a softer blur while JPEG shows its trademark blocks. Neither wins on every image. Heavily textured subjects like foliage sometimes compress about the same in both formats.
Core Web Vitals and the case for WebP
Largest Contentful Paint, or LCP, measures how fast the biggest visible element finishes loading in the viewport. On most marketing pages that element is a hero photo. Google has confirmed Core Web Vitals act as a ranking factor in Search. When the hero is a large JPEG, it can shove LCP past the 2.5 second threshold on a mid-range mobile connection. Convert the same photo to WebP and LCP can slide back inside the green zone with no other change to the page. The 25 to 34 percent saving compounds across every image on the page. A page carrying several JPEGs can shed hundreds of kilobytes by switching to WebP, which directly speeds up the first meaningful paint on slow links. CDNs that support content negotiation hand WebP to compatible browsers on their own, so there is no per-image busywork once the originals exist.
Browser support for WebP in 2026 and the gaps
As of 2026, WebP reads in Chrome since version 17, Firefox since 65, Edge since 18, Opera since 11.10, and Safari since version 14 on iOS 14 and macOS Big Sur. According to caniuse.com, combined global coverage for WebP decode tops 97 percent of browser traffic. The remaining sliver is mostly Internet Explorer 11, Safari 13 on macOS Catalina, and a long tail of very old Android browsers. For most public projects, serving WebP to everyone is safe. When you need total coverage, the HTML picture element lets you list a WebP source and a JPEG fallback in one tag, and the browser takes the first format it can read. CDNs with image optimisation negotiate the format automatically from the Accept header the browser sends, so no manual per-browser testing is needed when you serve through them.
When not to use WebP
WebP is the right call for web delivery to modern browsers, but it is the wrong call in a few common spots. Print work needs CMYK colour, which WebP does not carry, so JPEG and TIFF stay standard for the press. Email clients are uneven: Gmail and Apple Mail render WebP, but Outlook on Windows does not. File sharing and marketplaces vary too. Google Drive, Dropbox, and GitHub show WebP fine, while many social platforms, stock agencies, and e-commerce systems re-compress incoming images to JPEG internally, which makes the WebP step pointless. Editor support is still patchy: Lightroom, Capture One, and Affinity Photo can open WebP, yet plenty of plugins and export presets still default to JPEG. For any workflow that passes images through third-party systems you do not control, keep a JPEG master and convert to WebP only at the final delivery layer.