ARW to WebP Converter

Convert ARW to WebP Online

ARW is Sony's Alpha RAW format — a digital negative that holds the unprocessed sensor data from α, Cyber-shot, and RX cameras, which is why a RAW file needs software like Lightroom or Capture One just to open. Converting to WebP renders that RAW into a finished image that loads in any modern browser, and WebP's compression makes it markedly smaller than the equivalent JPEG or PNG. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.

How to Convert ARW to WebP

1. Upload Your ARW File: Drag and drop your ARW photo onto the page or click "+ Add Files". You can queue several Sony RAW files and convert them in one batch.
2. Pick a Quality Preset: Open Advanced Options and choose a Quality Preset — "Very High" is the recommended default. Higher settings preserve more detail; lower settings shrink the file by compressing harder. You can also target a specific file size instead.
3. Set Lossless and Resolution (Optional): Flip "Lossless?" to "Yes" for a pixel-perfect render, or leave it "No" for a smaller lossy WebP. Keep the original resolution or scale it down with Resolution Percentage, Width, or Height.
4. Convert and Download: Click "Convert" and download your WebP. No sign-up, no watermark.

ARW vs WebP at a Glance

For a more universally compatible still image, convert ARW to JPG instead — JPEG is the safest default when transparency and the last few percent of file size don't matter.

Frequently Asked Questions

Will I lose image quality converting ARW to WebP?

Rendering a RAW always bakes in white balance, exposure, and color decisions that the ARW kept adjustable — that editing latitude is gone once the file is a WebP. The visible pixels, however, hold up well: at "Very High" quality the lossy WebP is hard to tell from the source, and if you flip "Lossless?" to "Yes" the rendered pixels are preserved exactly. The trade-off is RAW flexibility, not visible sharpness.

Should I pick lossy or lossless WebP for a Sony RAW photo?

For photographs, lossy WebP is almost always the better choice — it is far smaller and, at high quality, visually indistinguishable. Reach for lossless only when you need an exact pixel match (for example, a screenshot-like image or artwork with hard edges and flat color). Google measures lossless WebP at about 26% smaller than PNG and lossy WebP at 25-34% smaller than JPEG at equivalent quality, so either way the WebP undercuts the older formats.

How much smaller will the WebP be than my ARW file?

A lot. ARW files run to tens of megabytes because they store the full sensor readout for editing; the rendered WebP keeps only the finished image at web resolution. In our testing, a 24-megapixel ARW around 25 MB rendered to a few hundred kilobytes as a "Very High" lossy WebP at full resolution — and smaller still after scaling down with Resolution Percentage. The exact figure depends on the scene and your quality setting.

Does WebP keep transparency, and does my Sony RAW have any?

WebP does support an alpha channel — lossless WebP carries transparency, and lossy WebP can too, typically about 3x smaller than the same image as a PNG. A Sony ARW straight from the camera has no transparency to preserve, so this mainly matters if you plan to edit a cut-out later; for a normal photo it makes no difference.

Which browsers and apps can open the WebP I get?

WebP is supported in Chrome 32+, Firefox 65+, Edge 18+, and Safari 16+, which covers roughly 96% of users worldwide — so the file opens directly in essentially any current browser. Most modern image viewers and editors read it too. If you need to hand the photo to very old software that predates WebP, convert ARW to JPG for maximum compatibility.