BMP vs CIN
A detailed comparison of BMP Image and Kodak Cineon — file size, quality, compatibility, and which format to choose for your workflow.
BMP Image
Raster & Vector ImagesBMP is an uncompressed raster image format native to Windows. Files are large but preserve exact pixel data with no compression artifacts. Rarely used on the web due to file size.
About BMP filesKodak Cineon
Raster & Vector ImagesCineon is a digital film format developed by Kodak for scanning and recording motion picture film. It uses logarithmic encoding to capture the full density range of film negative, preserving maximum tonal detail for post-production grading.
About CIN filesStrengths Comparison
BMP Strengths
- Dead-simple format — trivially easy to read and write.
- Lossless and uncompressed — perfect bit-exact pixel storage.
- Universally supported in Windows applications since 1985.
- Supports 1, 4, 8, 16, 24, and 32-bit color depths.
CIN Strengths
- 10-bit log color preservation.
- Film-scanning archival standard.
- DPX-compatible.
Limitations
BMP Limitations
- Enormous file sizes — no meaningful compression in typical use.
- Not a web format — browsers support it but nobody serves BMPs over HTTP.
- No metadata support (no EXIF, no ICC profile in practice).
- Multiple header versions mean "a BMP" is ambiguous — parsers must handle several variants.
CIN Limitations
- Legacy — DPX is the modern choice.
- No compression.
- Niche tooling.
Technical Specifications
| Specification | BMP | CIN |
|---|---|---|
| MIME type | image/bmp | image/cineon |
| Extensions | .bmp, .dib | — |
| Compression | None (typical); RLE 4/8 bit (rare) | — |
| Color depths | 1, 4, 8, 16, 24, 32 bits per pixel | — |
| Byte order | Little-endian | — |
| Extension | — | .cin |
| Encoding | — | 10-bit logarithmic per channel |
| Successor | — | SMPTE 268M DPX |
Typical File Sizes
BMP
- Small icon (32×32) 4 KB
- Screenshot (1920×1080) ~6 MB
- 4K image (3840×2160) ~25 MB
- Scanned A4 at 300 dpi ~25 MB
CIN
- 2K scanned 35mm frame ~12 MB
- 4K scan ~50 MB
Ready to convert?
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Frequently Asked Questions
BMP (Bitmap) is a raster image format developed by Microsoft for Windows. It stores images with no compression by default, resulting in large file sizes but pixel-perfect quality. It has been part of Windows since version 1.0.
CIN (Kodak Cineon) is an image format used to store raster graphics — a two-dimensional grid of pixels describing a picture. It is part of the raster & vector images family and designed around a specific trade-off between file size, visual fidelity, and feature support (transparency, colour depth, compression type). Photographers, web designers, and content creators choose CIN when its particular strengths match the publishing target.
BMP files open in Windows Paint, Photos, macOS Preview, GIMP, Photoshop, and virtually any image viewer. All Windows applications support BMP natively.
Most desktop photo viewers (Windows Photos, macOS Preview, GIMP, Photoshop, Affinity Photo) open CIN natively. On mobile, iOS Photos and Google Photos display CIN in the gallery when supported by the OS. If the format is rare or new, convert to JPG or PNG first — both are universally readable — using our CIN to JPG or CIN to PNG converter.
PNG is better than BMP in almost every scenario since it provides lossless compression (smaller files), transparency support, and wider cross-platform use. BMP is mainly relevant for legacy Windows applications.
Upload the CIN to KaijuConverter and pick a target format (JPG, PNG, WebP, HEIC, TIFF, BMP, SVG, PDF). The conversion runs in the browser via ImageMagick and returns a download in seconds. No account or installation required; both input and output delete automatically within two hours.