CRW to TIFF Converter

Convert CRW to TIFF 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 a TIFF file?

The Tagged Image File Format (TIFF) is a container format for storing raster graphics images, originally created by Aldus Corporation in 1986 and currently controlled by Adobe Systems. Ideally suited for photography and desktop publishing, TIFF supports multiple color spaces (CMYK, RGB, Lab), various compression schemes (lossless LZW, Deflate, or lossy JPEG), and data tags that define image geometry. It conforms to the TIFF 6.0 specification and can accommodate multi-page documents and extensive metadata standards like Exif, IPTC, and XMP within its header structure.

How to open a TIFF file

Due to its status as a standard industry format for high-quality imaging, TIFF files possess robust native support across major operating systems, including Microsoft Windows Photos and macOS Preview. For advanced editing and layer manipulation, professional raster graphics editors such as Adobe Photoshop, GIMP, and CorelDRAW are required. Specialized viewing software like IrfanView or XnView can also render multi-page TIFFs that standard system viewers may display incorrectly.

TIFF Technical Info

Full Name: Tagged Image File Format
Developed By: Aldus Corporation (now Adobe)
Initial Release: 1986
MIME Type: image/tiff

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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 TIFF in seconds

Every CRW to TIFF 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 TIFF via API

Automate CRW to TIFF 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-tiff",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "tiff"
      },
      "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.