CRW to MAP Converter

CRW to MAP conversion — instant results, no signup needed

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Your Files, Protected

Security is built into every conversion. Uploaded CRW images are deleted instantly after processing, and MAP results are cleaned up within 24 hours.

Effortless Process

No technical knowledge required. The converter guides you through CRW to MAP conversion in a few clicks — upload, select format, download.

Works Everywhere

Platform-independent conversion — process CRW to MAP on any operating system or device through your web browser, without plugins or installs.

How to convert CRW to MAP

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose map or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your map file right afterwards

About formats

CRW is Canon's first-generation RAW image format, based on the Camera Image File Format (CIFF) specification developed jointly by Canon, Kodak, and other imaging companies in the late 1990s. Used by Canon's consumer and prosumer cameras from approximately 1998 through the early 2000s — including the PowerShot G-series, EOS D30, EOS D60, and EOS 10D — CRW files store the unprocessed 12-bit sensor readout in a heap-based container structure that differs fundamentally from the TIFF-derived approach used by most other camera manufacturers. The CIFF container organizes data into a hierarchical directory of heap entries, each identified by type and tag, containing the raw image data, JPEG thumbnail, EXIF information, and Canon's proprietary metadata including White Balance tables and Picture Style parameters. CRW was eventually replaced by the CR2 format starting with the EOS-1D Mark II in 2004, as Canon moved to a TIFF-based container that aligned more closely with industry conventions and supported higher bit depths. One advantage of CRW files is historical completeness: they preserve the full original sensor data from an important transitional period in digital photography, and the 12-bit captures from cameras like the EOS D30 still produce excellent results when reprocessed with modern RAW converters. Broad legacy support is another strength — despite its age, CRW remains readable by Adobe Lightroom, Photoshop, RawTherapee, and other modern converters, ensuring these early digital negatives remain accessible.
Developer: Canon
Initial release: 1998
MAP is an internal raster image format used by ImageMagick, the open-source image processing suite first released by John Cristy at DuPont on August 1, 1990. MAP files store indexed-color (color-mapped) images in ImageMagick's native representation: a color palette (the map) followed by pixel data where each pixel is an index into that palette rather than a direct RGB value. The format provides a compact representation for images with a limited number of distinct colors — each pixel requires only enough bits to index the palette (typically 8 bits for up to 256 colors), compared to the 24 or 32 bits per pixel required by full-color formats. MAP serves primarily as an intermediate format within ImageMagick's processing pipeline, useful when performing operations that benefit from or require palettized representation: color quantization (reducing an image to a specific number of colors), palette manipulation, GIF preparation, and indexed-color analysis. The format is invoked through ImageMagick's standard I/O syntax and can be piped between processing stages without disk overhead. One advantage is direct access to ImageMagick's color quantization and palette management capabilities: MAP format output makes the palette structure explicit and manipulable, enabling workflows where specific palette operations (reordering, remapping, merging) need to be performed between processing steps. The format's integration into the ImageMagick processing ecosystem is another practical strength — any of ImageMagick's extensive image manipulation operations can consume or produce MAP format data, making it a natural intermediate for color-reduction pipelines that ultimately target GIF, PNG with palette, or other indexed-color formats.
Initial release: 1990

Frequently Asked Questions

Why should I convert CRW to MAP?

Canon replaced CRW with CR2 years ago, and CRW support is fading — converting your CRW archive to MAP prevents losing access to irreplaceable photos.

What software can open MAP?

Open MAP files using IrfanView, XnView, and image processing applications.

Is my CRW file safe during conversion?

Your files are handled securely. The CRW upload is erased right after processing, and the resulting MAP is purged from servers within 24 hours.

Does converting CRW to MAP affect quality?

Your CRW image data is processed carefully during conversion. The resulting MAP retains the maximum quality the target format can support.

Is CRW to MAP conversion free?

Converting CRW to MAP is free at Convertio. For heavier workloads or extra features, paid plans provide additional capacity.

Do I need to install software?

No installation required — the CRW to MAP converter runs entirely online. Just open your browser, upload the file, and convert.