Convert MRW to WebP Online

MRW is unprocessed sensor data straight off the camera — 20-100 MB per frame, with no white balance, tone curve or sharpening baked in. Developing a RAW into WebP produces a finished, viewable image at a fraction of a percent of the original size, with white balance and tone mapping applied. It is the fastest route from a memory card to something you can actually put on a web page.

WebP is the default currency of fast web pages — smaller than JPEG at the same visual quality, smaller than PNG while keeping transparency, and supported by every browser in use. In practice that means a page that loads faster on mobile, a better Largest Contentful Paint score, and less CDN bandwidth — for the same picture. MRW files are 20-100 MB per frame — hundreds of times a WebP, so this is usually the single biggest weight saving available on a page built from them.

Keep the RAW originals. They stay the editable master with full highlight and shadow recovery latitude that no WebP export can give back. WebP tops out at 16383 pixels on either edge, so anything larger is scaled to fit; for the vast majority of web work that ceiling is nowhere near a constraint.

WebP was released by Google in September 2010, built on the intra-frame compression of the VP8 video codec Google acquired with On2 Technologies. Lossless mode (VP8L) and alpha transparency arrived in 2011, animation in 2012. Adoption stalled for most of a decade because Safari refused to ship it, so sites had to serve fallbacks anyway. That ended in September 2020 when Apple enabled WebP in Safari 14, macOS Big Sur and iOS 14 — overnight the format became genuinely universal in browsers. Today Next.js, Cloudflare, Cloudinary, imgix, WordPress and Shopify all emit WebP by default, which is why so many images saved from the web now land on disk as a .webp file.

RAW files are unprocessed sensor data — 20 to 100 MB each, with no white balance, tone curve or sharpening baked in, and unviewable without specialist software. Converting to WebP develops the file into a finished, viewable image at a fraction of a percent of the original size, with white balance and tone mapping applied.

For photographers this is the fastest route from a memory card to a portfolio, a client proof gallery or a blog post. A shoot that would occupy tens of gigabytes as RAW becomes a web-ready gallery small enough to serve directly, without a detour through a full Lightroom export.

Set white balance explicitly rather than accepting the camera default — RAW carries no baked-in rendering, so it is the single setting that most changes how the result looks. And keep the RAW originals: they remain the editable master with highlight and shadow recovery latitude no WebP export can give back.