CONVERT CR2 → ICO (CR2 to ICO)
Fast, secure CR2 to ICO conversion. No registration required.
📈 Target Minimum File Size (Guaranteed ≥ KB)
Lossless JPEG Q100 + standard COM segment padding for government & exam portals
Tap to choose your file Drop files here or click to browse
Automatic format identification and lossless transcoding across 201+ formats.
Convert to:
Detecting available formats...
Target Max File Size:
Uploading...
Processing your file...
READY!
Download File
Your file is converted & verified! Unlock instant download:
One-time secure payment via Stripe (Apple Pay, Google Pay, Card). Zero recurring subscription.
🛡️ Verification Audit
- ✓
- ✓ sRGB Color Fidelity
- ✓
Continue with this converted file (0s zero re-upload):
Batch Conversion Ready!
Your file is converted & verified! Unlock instant download:
One-time secure payment via Stripe (Apple Pay, Google Pay, Card). Zero recurring subscription.
Need to convert larger files or bigger batches right now?
Unlock up to 1 GB & priority cloud queue with 1-click Stripe checkout (Apple Pay, Google Pay, Card):
EXIF & Color Verification Audit ISO Verified
-
✓
GPS Coordinates (37.1773° N, 3.5986° W): Stripped (Zero Location Leak)
-
✓
Device Serial & Lens ID: Stripped (EXIF / IPTC / XMP Clean)
-
✓
Color Space Profile: Display P3 → sRGB IEC61966-2.1
-
✓
Chroma Subsampling: 4:4:4 High Fidelity (High-fidelity algorithmic conversion)
HOW TO CONVERT CR2 → ICO
Upload your CR2
Start by dropping the CR2 onto the uploader. Files up to 25 MB go through on the free tier without registration; paid plans go up to 2 GB.
Conversion happens server-side
Our imagemagick-based pipeline reads the CR2 pixel grid, preserves resolution and colour profile, and encodes a clean ICO.
Grab the result
A download button appears as soon as the ICO is ready. Save locally or share the short-lived URL.
Here is the short version — CR2 is Canon's proprietary RAW photo format from its DSLR line. Hence the need for ICO. Need a ICO for a CMS, a chat message or an email client that politely refuses CR2? This tool re-encodes your image in the background and returns a drop-in ICO replacement. No registration, no watermark, no visual change beyond what the ICO encoder itself introduces. In practice CR2 is Canon's proprietary RAW photo format from its DSLR line. On the other end, ICO is the Windows icon container with multiple resolutions packed into one file.
Why convert CR2 to ICO
Converting keeps the picture recognisable end-to-end while changing the container that ships it. ICO typically wins on one of three fronts: broader software support, smaller files for the same visual quality, or features like transparency that CR2 cannot express. The conversion itself is fast because both sides are raster formats.
CR2 vs ICO — Technical specifications
Side-by-side comparison of the technical details.
CR2
- MIME type
- image/x-canon-cr2
- Extension
- .cr2
- Container
- TIFF/EP with Canon private tags
- Bit depth
- 14-bit (most bodies); 12-bit (some)
- Successor
- .cr3 (EOS M50 onward, 2018)
- MIME Type
- image/x-canon-cr2
- Category
- Raster & Vector Images
- Full Name
- Canon RAW CR2
- Conversion Engine
- IMAGEMAGICK
ICO
- MIME type
- image/vnd.microsoft.icon
- Extension
- .ico
- MIME Type
- image/x-icon
- Category
- Raster & Vector Images
- Full Name
- ICO Icon
- Conversion Engine
- IMAGEMAGICK
- 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 | CR2 | ICO |
|---|---|---|
| MIME type | image/x-canon-cr2 | image/vnd.microsoft.icon |
| Extension | .cr2 | .ico |
| Container | TIFF/EP with Canon private tags | — |
| Bit depth | 14-bit (most bodies); 12-bit (some) | — |
| Successor | .cr3 (EOS M50 onward, 2018) | — |
| MIME Type | image/x-canon-cr2 | image/x-icon |
| Category | Raster & Vector Images | Raster & Vector Images |
| Full Name | Canon RAW CR2 | ICO Icon |
| Conversion Engine | IMAGEMAGICK | IMAGEMAGICK |
| 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+) |
CR2 vs ICO — Strengths and limitations
What each format does best, and where it falls short.
CR2 Strengths
- Mature — 13 years of camera bodies and tooling.
- Preserves every bit of Canon sensor data for post-processing.
- Embedded JPEG preview makes browsing fast.
- Supported by every major raw processor.
Limitations
- Proprietary — no official spec, tool support depends on reverse engineering.
- Canon-only tags (Picture Styles, DPP adjustments) are lost when processed outside DPP.
- Superseded by CR3 in 2018 — format is frozen.
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).
Quality & Compatibility
Converting keeps resolution, aspect ratio and colour profile identical to the source. Metadata (EXIF, XMP) transfers where ICO supports it; otherwise it is dropped. If the CR2 contained an alpha channel and ICO does not support transparency, the background is flattened to white by default.
Tips for Best Results
- When uploading to Retina / high-DPI contexts, render the ICO at 2× the CSS pixel size; the crispness gap over 1× is noticeable on modern screens.
- Strip EXIF metadata from the ICO before publishing if the CR2 came from a phone camera — it often contains GPS coordinates and device IDs.
- If the CR2 is a screenshot of text or UI, prefer a lossless ICO target to avoid the JPEG-style ringing around glyph edges.
Frequently Asked Questions
It depends on the codecs involved. If both CR2 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 CR2 exactly, but cannot recover detail that CR2 had already compressed away.
Often yes, especially when ICO is lossless. CR2 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.
Canon RAW CR2
Source formatCR2 is Canon camera RAW format containing unprocessed sensor data.
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.
Common Use Cases
Share across platforms
Send ICO files to anyone without worrying about whether they have the right software for CR2.
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 CR2 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.
CR2 vs ICO — Typical file sizes
Approximate file sizes for common scenarios.
- 22 MP CR2 (5D Mark III) 25-35 MB
- 50 MP CR2 (5DS/5DS R) 55-75 MB
- 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
Need to Convert Gigabyte Archives or Mass Folders?
KaijuConverter delivers ultra-fast in-memory conversions for everyday tasks. For multi-gigabyte production workloads without browser bandwidth bottlenecks, explore high-throughput desktop suites.
One-time payment with zero recurring commitment: convert files up to 1 GB, OCR, PDF/A, and .ZIP batches for 24 hours.
Full 7 days of unlimited conversions, up to 2 GB per file, 100% ad-free with zero subscription.
High-throughput enterprise pipeline for files up to 2,048 MB, 50-file batches, ISO PDF/A, and priority processing.
Convert thousands of camera RAW files (CR3, NEF, ARW) to WebP, AVIF, or TIFF in one pass.
GPU-accelerated RAW development with end-to-end 16-bit ICC color profile management.
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...
Read guide →ICO 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...
Read guide →ICO 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 guide →
</>
Embed this tool on your website or blog (Free)
▼
Add this converter to your site in 10 seconds
Help your visitors convert files directly from your documentation, CMS, or blog. Copy the lightweight HTML snippet below — zero dependencies, responsive, and 100% free.
Secure & 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.