CONVERT
CIN → ICO
Tap to choose your fileDRAG. DROP. DONE.
Upload any file and our engines will handle format detection automatically.
Max 25 MB · Free plan · No signup required
Convert to:
Detecting available formats...
Optimize for
Leave empty to use original name. Extension added automatically.
Uploading...
Processing your file...
Fast, secure CIN to ICO conversion. No registration required.
Opening note — CIN is a raster image format with its own balance of compression, colour depth, and software support. The ICO you want is two clicks away. Converting CIN to ICO swaps one image container for another without leaving the image family. The choice usually comes down to compatibility with the tool or platform that will consume the file next — some editors handle ICO natively while CIN still requires a plugin or extra step. KaijuConverter re-encodes in the browser session with ImageMagick, preserving resolution and colour profile, and leaves the source CIN untouched. Technical note: CIN is a raster image format with its own balance of compression, colour depth, and software support. Compare that with ICO is the Windows icon container with multiple resolutions packed into one file.
Kodak Cineon
Source formatCineon 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.
ICO Icon
Target formatICO is the icon file format used for favicons and Windows application icons. A single ICO file can contain multiple image sizes and color depths for different display contexts.
Why convert CIN to ICO
Both CIN and ICO describe a grid of pixels — the difference lies in how that grid is compressed, whether transparency is supported, and which software opens it natively. Moving from CIN to ICO is worth it when the ICO ecosystem is broader for your use case, or when ICO compresses photographs more efficiently than CIN.
HOW TO CONVERT
CIN → ICO
Drop the CIN file
Drag and drop or click to upload your CIN. The image is transferred securely over HTTPS and queued for conversion.
Re-encode with ImageMagick
ImageMagick decodes every pixel of the CIN and writes a matching ICO with sensible default quality settings.
Download the ICO
The converted ICO is ready to download as a single file; both files delete automatically within two hours.
Common Use Cases
Share across platforms
Send ICO files to anyone without worrying about whether they have the right software for CIN.
Embed in documents
Drop ICO output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
ICO often produces smaller files than CIN for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
CIN vs ICO — Strengths and limitations
What each format does best, and where it falls short.
CIN Strengths
- 10-bit log color preservation.
- Film-scanning archival standard.
- DPX-compatible.
Limitations
- Legacy — DPX is the modern choice.
- No compression.
- Niche tooling.
ICO Strengths
- Multi-resolution: one file, many sizes, OS picks the right one.
- Universal favicon support in every browser since IE5.
- Supports transparency (1-bit since 1985, full alpha since XP).
- Tiny file size — an entire favicon pack typically fits in under 15 KB.
- No licensing or patent concerns — fully in the public domain spec-wise.
Limitations
- Cannot compress continuous-tone images efficiently — use PNG or WebP for photos.
- Format is essentially frozen in 1999 — no HDR, no wide gamut, no modern features.
- Maximum image dimension is 256×256 px (inside an ICO container).
CIN vs ICO — Technical specifications
Side-by-side comparison of the technical details.
CIN
- MIME type
- image/cineon
- Extension
- .cin
- Encoding
- 10-bit logarithmic per channel
- Successor
- SMPTE 268M DPX
ICO
- MIME type
- image/vnd.microsoft.icon
- Max resolutions per file
- 65 535 images
- Max single image size
- 256×256 px
- Color depths
- 1, 4, 8, 24, 32 bits per pixel
- Compression
- Uncompressed bitmap or embedded PNG (Vista+)
| Specification | CIN | ICO |
|---|---|---|
| MIME type | image/cineon | image/vnd.microsoft.icon |
| Extension | .cin | — |
| Encoding | 10-bit logarithmic per channel | — |
| Successor | SMPTE 268M DPX | — |
| Max resolutions per file | — | 65 535 images |
| Max single image size | — | 256×256 px |
| Color depths | — | 1, 4, 8, 24, 32 bits per pixel |
| Compression | — | Uncompressed bitmap or embedded PNG (Vista+) |
CIN vs ICO — Typical file sizes
Approximate file sizes for common scenarios.
CIN
- 2K scanned 35mm frame ~12 MB
- 4K scan ~50 MB
ICO
- Classic favicon (16×16 only) < 2 KB
- Multi-size favicon pack (16/32/48/256) 5-15 KB
- Full Windows app icon set 20-100 KB
Quality & Compatibility
If ICO is a lossless format (PNG, TIFF, BMP) the output keeps every pixel of the decoded CIN exactly. If ICO is a lossy codec (JPEG, WebP, HEIC), the encoder re-compresses the image at the quality level you select — default 85 is transparent for photographs, quality 92+ for illustrations with hard edges.
Tips for Best Results
- Keep the original CIN alongside the ICO output — re-encoding already-lossy images accumulates detail loss on each round.
- If the ICO will be uploaded to a CMS, check whether the platform has a max dimension and downscale once on export rather than letting the CMS resize automatically.
- For thumbnails and avatars, export the ICO at exactly the display size; browsers will otherwise resample and the image may look soft.
Frequently Asked Questions
It depends on the codecs involved. If both CIN and ICO are lossy, the pixels are re-encoded and a small amount of detail is discarded — invisible at default quality settings on photographs. If ICO is lossless (PNG, TIFF, BMP) the output keeps every pixel of the decoded CIN exactly, but cannot recover detail that CIN had already compressed away.
Often yes, especially when ICO is lossless. CIN tuned for efficient web delivery will usually produce smaller files than ICO's default settings. If file size matters, drop the quality in Advanced or pick a more compressed target format instead.
KaijuConverter uploads over HTTPS, processes the image in an isolated container and deletes both the source and the output within two hours. No account is required, file contents are never logged, and we do not use uploads to train any model. For confidential material, the paid plan includes a data-processing agreement.
Related comparisons
See these formats side by side to understand which fits your use case best.
Related Guides
DICOM Medical Imaging Format: The Complete Guide
Complete guide to DICOM: the medical imaging standard used in radiology (MRI, CT, X-ray), file structure, data elements, transfer syntaxes, WADO-RS, and converting DICOM to PNG/JPEG/NIfTI.
Read guideICO Format: Complete Guide to Windows Icons and Web Favicons
Complete guide to ICO format: multi-size icon structure, BMP vs PNG encoding, favicon setup for websites, touch icons, and how to create ICO files with ImageMagick.
Read guideICO Format: Windows Icon Files Explained — Sizes, Layers & Conversion
Everything about ICO files: how Windows icon containers work, supported sizes (16×16 to 256×256), PNG compression, and how to convert images to ICO.
Read guideSecure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.