Almost every photo you have ever taken is a JPG. Phones, DSLRs, scanners and stock libraries default to it, and it has carried the web's pictures for three decades. WebP was designed as its successor: at the same visual quality a WebP photo is typically 25 to 35 percent lighter, and every current browser displays it. If you publish photos online, that saving adds up quickly across a gallery or a product catalogue.
This page turns JPG and JPEG files into WebP directly in your browser. Add a single picture or a whole folder from a shoot, set the quality, and compare the original and new size of each photo before you keep anything. Your pictures are never sent to a server.
Why WebP beats JPG for photographs
JPG splits a picture into 8 by 8 pixel blocks and discards fine detail inside each block. Pushed too far, that shows up as visible squares and ringing around edges. WebP's lossy mode comes from the VP8 video codec: it predicts each block from its neighbours, uses variable block sizes and applies a deblocking filter, so it needs fewer bytes to describe the same scene and degrades more gracefully as you lower the quality.
The trade-off is reach outside the browser. Chrome, Edge, Firefox and Safari all show WebP, and most current operating systems can preview it, but some older desktop software, print services and content management systems still expect JPG. Treat the WebP copy as the version you publish and keep the original JPG as your master file.
When converting JPG to WebP makes sense
Photo galleries and portfolios
A photographer's portfolio page might hold forty full-width images. Serving them as WebP instead of JPG trims megabytes from the page, which matters most for visitors on mobile data, while the photos look the same on screen.
Online shop product shots
Product listings repeat the same layout hundreds of times. Moving a catalogue's JPGs to WebP lowers bandwidth costs and speeds up category pages, which helps both conversion rates and search rankings.
Holiday snapshots you only view on screen
Pictures straight from a phone are often 3 to 5 MB each. If you only ever look at them on a monitor or tablet, a WebP copy at quality 80 to 85 keeps them looking identical while freeing noticeable space. Hold on to the originals if you might print them.
What happens to your photo during conversion
Your browser decodes the JPG into raw pixels, paints them on an off-screen canvas in a background Web Worker, and encodes that canvas as WebP at the quality you set. The page stays responsive while this runs, and your photos never leave your device.
Because a JPG has already been compressed once, converting it means compressing it a second time. Keeping the quality at 80 or above avoids stacking new artefacts on top of the old ones; the default of 82 suits most photos. Re-encoding also strips EXIF metadata, so the camera model, exposure settings, date taken and GPS location do not travel into the WebP. That is handy for privacy before you post a picture publicly, but it matters if you sort your library by capture date.
Cómo usar esta herramienta
- Add your JPG or JPEG photos by dragging them onto the box above, or click it to pick files.
- Set the quality slider. Values from 80 to 85 keep most photos visually unchanged.
- Press Convert and watch each photo switch to Done, with its new size beside it.
- Save each WebP on its own, or use Download all (.zip) to grab the whole set.
Things to know before you convert
- EXIF data, including camera settings, the capture date and GPS coordinates, is not copied into the WebP file.
- Embedded colour profiles may not be preserved exactly, so photos edited in a wide-gamut space such as Adobe RGB can shift slightly in colour.
- Some browsers, Safari in particular, may be unable to encode WebP. If a photo shows Failed, try Chrome, Edge or Firefox.
- Each file can be up to 50 MB, and very high-resolution panoramas may run out of memory on a phone.