CRW to AVIF Converter

Convert CRW to AVIF online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

or drag and drop files here

Maximum file size is 1GB

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is a CRW file?

The CRW (Canon RaW) format is a legacy raw image container used by early Canon digital cameras, including the PowerShot G1 and EOS D30, prior to the adoption of CR2. It is structured according to the Camera Image File Format (CIFF) standards, storing uncompressed CCD sensor data alongside a separate THM (Thumbnail) file that contains EXIF metadata and a JPEG preview. CRW files lack the internal TIFF structure found in modern raw formats, relying instead on a heap-based storage mechanism with specific data offsets.

How to open a CRW file

Due to its obsolescence, native operating system support for CRW is limited on modern Windows 11 and macOS environments. Users generally require specialized image viewers or legacy conversion tools. Adobe Photoshop (via older Camera Raw plugins), IrfanView (with plugins), and FastStone Image Viewer can render CRW data. For open-source workflows, Darktable and LibRaw-based applications provide decoding capabilities for these legacy sensor dumps.

CRW Technical Info

Full Name: Canon Raw (Legacy)
Developed By: Canon Inc.
Initial Release: 1997
MIME Type: image/x-canon-crw

What is an AVIF file?

The AVIF (AV1 Image File Format) is an open, royalty-free raster image container specified by the Alliance for Open Media (AOMedia) in ISO/IEC 23000-12. It encapsulates image sequences or still images compressed with the AV1 video codec within the HEIF (High Efficiency Image File Format) container structure. AVIF supports high dynamic range (HDR) utilizing Perceptual Quantizer (PQ) or Hybrid Log-Gamma (HLG) transfer functions, wide color gamut (WCG), and 4:2:0, 4:2:2, or 4:4:4 chroma subsampling, offering superior compression efficiency over JPEG and WebP.

How to open an AVIF file

Native support for AVIF is available in modern web browsers including Google Chrome (v85+), Mozilla Firefox (v93+), and Safari (v16+). For local viewing, Windows 10 and 11 require the installation of the free 'AV1 Video Extension' from the Microsoft Store to enable support in the Photos app and File Explorer. macOS 13 (Ventura) and iOS 16 provide system-level support. Graphics editors like GIMP, Paint.NET, and Adobe Photoshop (via plugin) can also decode and edit these files.

AVIF Technical Info

Full Name: AV1 Image File Format
Developed By: Alliance for Open Media
Initial Release: 2019
MIME Type: image/avif

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Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

Convert CRW to AVIF in seconds

Every CRW to AVIF conversion runs on our servers, so your device stays fast and the output quality stays intact.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert CRW to AVIF via API

Automate CRW to AVIF conversions in three steps: create a job, upload your file, then poll for the result.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "crw-to-avif",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "avif"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.crw

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.