ARW to WebP Converter — Free, Online, No Upload

Sony ARW files are RAW camera files — dense with sensor data, incompatible with most software, and far too large for web use at 20–80 MB per image. To share ARW photos online, post them to a portfolio, upload them to a CMS, or send them via messaging apps, you need to convert to a web-compatible format first.

WebP is the best choice when you want the smallest possible file size with good visual quality. A 50 MB ARW becomes a full-size WebP of a few megabytes — the difference between a photo that loads instantly and one that makes visitors wait. WebP is supported natively in Chrome, Firefox, Edge, and Safari 14+, covering the vast majority of web users. It's accepted by WordPress, Shopify, and most modern CMS platforms.

Browsers can't read RAW files, so the converter develops the ARW's sensor data itself, at full size and with the camera's white balance, using LibRaw, an open-source RAW decoder that runs in your browser, and compresses the result as WebP at quality 85. If you need full resolution or control over exposure, shadows, highlights, or colour, open the ARW in Lightroom or Capture One first, process it to taste, then export to WebP. The browser-based conversion is best for quick, good-enough results without installing software.

Typical sizes: ARW 20–30 MB (24MP Sony sensor); WEBP 1–3 MB (12MP photo).

On the free tier, WEBP output has a repeating formatdrop.com watermark; Pro output doesn't.

WEBP output is encoded at quality 85 — a small file with no visible difference for most photos.