JPG to WebP Converter
Turn a JPG into a smaller WebP — the same photo at a fraction of the size, so your pages load faster. Free, private, all in your browser.
Why convert JPG to WebP?
WebP is the format built for the modern web: at the same visible quality it makes a noticeably smaller file than JPG, so images download faster and your pages score better on Core Web Vitals. It’s the single most common web-optimisation conversion — and Lumisphere does it right in your browser: drop a JPG (or a whole batch), nudge the quality slider, and download WebP. Nothing is uploaded, there’s no sign-up or watermark, and every pixel is kept at full resolution.
- 1Add. Drop, paste or browse for an image (or several).
- 2Choose. Pick PNG, JPG, WebP or AVIF — tune quality for the lossy ones.
- 3Download. Save the converted file, or the whole batch.
Other conversions: Image Converter · PNG to WebP · WebP to PNG · JPG to PNG · PNG to JPG · SVG to PNG · PNG to ICO · WebP to JPG · AVIF to PNG · AVIF to JPG · AVIF to WebP — the same private, in-browser converter. Need transparency instead? Try the background remover (no upload).
Good to know
How do I convert a JPG to WebP?
Drop your JPG in, keep the format on WebP, and download — the same photo at a fraction of the size, with nothing uploaded.
Is WebP really smaller than JPG?
Usually by a clear margin — at the same visible quality WebP is typically 25–35% smaller than JPG, because it uses newer compression. Use the Quality slider to trade size against sharpness.
Will I lose quality converting JPG to WebP?
WebP is compressed like JPG, so at very low quality you can see artefacts — but at the default quality the difference is hard to spot while the file is much smaller. Converting can’t restore detail the original JPG already discarded.
Will every browser show my WebP?
All modern browsers (Chrome, Edge, Firefox, Safari) display WebP. Only very old software may not — if you need maximum compatibility, keep a JPG or PNG copy as well.
Is it free and private?
Completely — no sign-up, no watermark, no limit, and the JPG is converted on your device, so it’s never uploaded.