DNG vs ICO
A detailed comparison of Digital Negative (RAW) and ICO Icon — file size, quality, compatibility, and which format to choose for your workflow.
📈 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)
Technical Specifications
| Specification | .DNG | .ICO |
|---|---|---|
| MIME type | image/x-adobe-dng | image/vnd.microsoft.icon |
| Extension | .dng | — |
| Container | TIFF/EP (ISO 12234-2) | — |
| Standard | Adobe DNG Specification 1.6 | — |
| Compression | Lossless JPEG, Lossy JPEG XL-like, Uncompressed | Uncompressed bitmap or embedded PNG (Vista+) |
| Max resolutions per file | — | 65 535 images |
| Max single image size | — | 256×256 px |
| Color depths | — | 1, 4, 8, 24, 32 bits per pixel |
Strengths Comparison
.DNG Strengths
- Open, documented standard (ISO 12234-2) — future-proof for archival.
- Based on TIFF — broad tool support beyond Adobe.
- Can embed the original proprietary raw as a safety copy.
- Smaller than most proprietary raws thanks to lossless compression.
- Stores every Adobe Camera Raw adjustment inline, so edits travel with the file.
.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
.DNG — Limitations
- Canon, Nikon, Sony, Fuji still refuse to adopt it.
- Some manufacturer-specific features (Fuji film simulations, Nikon Picture Control) are lost in conversion.
- Slower workflow — RAW from camera must go through DNG Converter first.
- Mobile ProRAW files are heavy (25-75 MB per shot on iPhone).
.ICO — 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).
- Editing requires specialized tools — most image editors treat it as a curiosity.
Frequently Asked Questions
DNG (Digital Negative (RAW)) 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 DNG when its particular strengths match the publishing target.
ICO (Icon) is Microsoft's 1985 multi-resolution icon format, originally shipped with Windows 1.0. A single .ico file holds multiple sizes (16×16, 32×32, 48×48, 256×256) so the OS can pick the best one for the current display context. Since 1999, every website uses a favicon.ico to show its icon in browser tabs.
Most desktop photo viewers (Windows Photos, macOS Preview, GIMP, Photoshop, Affinity Photo) open DNG natively. On mobile, iOS Photos and Google Photos display DNG 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 DNG to JPG or DNG to PNG converter.
On Windows, ICO files open natively in File Explorer and Photos. On macOS, Preview handles basic display. For editing, use GIMP (free), Photoshop with a plugin, or dedicated icon editors like IcoFX.
Upload the DNG 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.
It depends on the task. JPG is the smallest file size for photographs; PNG is lossless with transparency; DNG has its own niche that may favour colour depth, animation, or encoding efficiency over one or both of those. For the final web publish, test all three and measure file size plus visible quality on real content.
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.