ARW Won't Open? Convert to WEBP Instantly
Fast, instant ARW (SONY) to WEBP conversion. No signup required. Just drop your .arw file and get .webp in seconds.
Batch Settings
HDR data will be tone-mapped
Your ARW file may contain HDR (High Dynamic Range) data. WEBP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost.
Some metadata may not survive
Your ARW file may contain MakerNote metadata. WEBP has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
About ARW (SONY) to WEBP Conversion
Dealing with a ARW file that won't open on your device? You're not alone — ARW compatibility issues are one of the most common reasons people search for a file converter. ARW is Sony's RAW photo format preserving the full dynamic range captured by the sensor.
The fix is simple: convert your ARW to WEBP. WebP is Google's modern image format offering both lossy and lossless compression at 25-35% smaller sizes than JPG/PNG. This conversion lets you improve file compatibility across devices, solving the problem in seconds rather than hours of troubleshooting.
Full Name: ARW uses Sony Alpha RAW, while WEBP uses WebP Image. Compression: ARW uses Lossless, while WEBP uses Lossy & Lossless. Transparency: ARW uses No, while WEBP uses Yes. Your ARW file may contain HDR (High Dynamic Range) data. WEBP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost.
CocoConvert processes your ARW file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you Your ARW file won't open on a recipient's device or in an application, or when you A website, service, or platform only accepts WEBP uploads.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert ARW (SONY) to WEBP
- 1
Add your ARW file
Drag and drop your .arw file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick WEBP output
Select .webp as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The image engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .webp file. For batch jobs, download all at once as a zip.
What Happens When You Convert ARW (SONY) to WEBP
Your ARW image is decoded into raw pixel data, then re-encoded as WEBP.
Your ARW file is decoded — the compressed/stored pixel data is expanded into raw RGB pixels
HDR data is tone-mapped to standard dynamic range (8-bit per channel)
Pixels are re-encoded using WebP Image's lossless compression
Metadata (EXIF, ICC profiles) is transferred where WEBP supports it
The WEBP file is saved and ready for download
ARW (SONY) vs WEBP — Detailed Comparison
| Feature | .ARW | .WEBP |
|---|---|---|
| Full Name | Sony Alpha RAW | WebP Image |
| Compression | Lossless | Lossy & Lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Color Depth | 14 bits/channel | 8 bits/channel (24-bit + alpha) |
| HDR Support | Yes | No |
| Typical File Size | 25–50 MB per photo | 30–35% smaller than JPEG at same quality |
| Platform Support | Limited | Very Wide |
| Browser Support | none | modern browsers |
| Year Created | 2006 | 2010 |
| Open Standard | No | Yes |
Should You Convert ARW (SONY) to WEBP?
When to Convert
- ✓Your ARW file won't open on a recipient's device or in an application
- ✓A website, service, or platform only accepts WEBP uploads
- ✓You need a file that works in web browsers
When NOT to Convert
- ✗You want to preserve HDR information — WEBP only supports standard dynamic range
Frequently Asked Questions
Why won't my ARW file open?
ARW files may not open if your device lacks the right codec or application. Converting to WEBP — a more widely supported format — usually resolves this. WebP is Google's modern image format offering both lossy and lossless compression at 25-35% smaller sizes than JPG/PNG.
Is it safe to convert ARW to WEBP online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting ARW to WEBP?
Your ARW file may contain HDR (High Dynamic Range) data. WEBP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my ARW file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert ARW to WEBP on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.