What is a JPG file?
JPEG has been the default format for photographs since 1992. It uses lossy compression tuned for natural images, which lets it shrink photos to a fraction of their raw size while keeping them visually convincing. Virtually every camera, phone, browser, and app on the planet can open a JPG.
In short, JPG is the universal standard for photographs. It is best for photographs, screenshots of photos, email attachments, and anywhere maximum compatibility matters more than perfect fidelity. Its main limitations are no transparency support, visible artifacts at low quality settings, and quality degrades each time the file is re-saved.
Why convert JPG to WebP?
WebP was created by Google to replace both JPG and PNG on the web. It supports lossy and lossless compression, transparency, and even animation in a single format. In lossy mode WebP files are typically 25–35% smaller than a JPG of comparable visual quality, which directly improves page-load speed and Core Web Vitals.
Converting from JPG to WebP makes sense when you need website images of every kind — product photos, hero images, thumbnails — where smaller files mean faster pages. WebP is supported by all modern browsers (Chrome, Firefox, Safari 14+, Edge).
WebP supports full transparency, so images you later edit can take advantage of an alpha channel — though a converted JPG starts out fully opaque.
How to convert JPG to WebP
Drag and drop one or more JPG files into the box above (or click to browse). Adjust the quality slider if you want smaller files or higher fidelity, then press Convert. Each file is decoded and re-encoded as WebP on your own device in a second or two, and you can download results individually or grab everything as a ZIP.
Unlike most online converters, FileLark never uploads your files to a server. The conversion runs entirely inside your browser using modern web technology, which means it works offline once the page has loaded, there are no file size queues or daily upload limits, and your images can never be stored, scanned, or leaked — they simply never leave your device.