CR2 vs ICO — Differences, File Size & When to Use Each

Q: What is an CR2 file?

CR2 (Canon RAW CR2) is an image format used to store raster graphics — a two-dimensional grid of pixels describing a picture. It is part of the raster &amp; 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 CR2 when its particular strengths match the publishing target.

Q: How do I open an CR2 file?

Most desktop photo viewers (Windows Photos, macOS Preview, GIMP, Photoshop, Affinity Photo) open CR2 natively. On mobile, iOS Photos and Google Photos display CR2 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 CR2 to JPG or CR2 to PNG converter.

Q: How do I convert an CR2 file to another format?

Upload the CR2 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.

Q: Is CR2 better than JPG or PNG?

It depends on the task. JPG is the smallest file size for photographs; PNG is lossless with transparency; CR2 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.

Q: What is an CR2 file?

CR2 (Canon RAW CR2) is an image formato used to store raster graphics — a two-dimensional grid of pixels describing a picture. It is part of the raster &amp; vector images family e designed around a specific trade-off between tamanho do arquivo, visual fidelity, e feature support (transparency, colour depth, compressão type). Photographers, web designers, e content creators choose CR2 when its particular strengths match the publishing target.

Q: Como abrir an CR2 file?

Most desktop photo viewers (Windows Photos, macOS Preview, GIMP, Photoshop, Affinity Photo) abrir CR2 natively. On mobile, iOS Photos e Google Photos display CR2 no gallery when suportado por the OS. If the formato is rare ou new, converter to JPG ou PNG first — both are universally readable — usando our CR2 to JPG ou CR2 to PNG converter.

CR2 vs ICO

Ein detaillierter Vergleich von Canon RAW CR2 und ICO Icon — Dateigröße, Qualität, Kompatibilität und welches je nach Workflow zu wählen ist.

CR2 → ICO umwandeln

CR2

Canon RAW CR2

Raster & Vector Images

CR2 is Canon camera RAW format containing unprocessed sensor data.

Über CR2-Dateien

ICO

ICO Icon

Raster & Vector Images

ICO 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.

Über ICO-Dateien

Vorteilsvergleich

CR2 Vorteile

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.

ICO Vorteile

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.

Einschränkungen

CR2 Einschränkungen

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.
File sizes are large (20-40 MB typical).

ICO Einschränkungen

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.

Technische Spezifikationen

Spezifikation	CR2	ICO
MIME type	image/x-canon-cr2	image/vnd.microsoft.icon
Extension	.cr2	—
Container	TIFF/EP with Canon private tags	—
Bit depth	14-bit (most bodies); 12-bit (some)	—
Successor	.cr3 (EOS M50 onward, 2018)	—
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+)

Typische Dateigrößen

CR2

22 MP CR2 (5D Mark III) 25-35 MB
50 MP CR2 (5DS/5DS R) 55-75 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

Bereit zum Umwandeln?

Wandle zwischen CR2 und ICO online um, kostenlos und ohne Installation. Verschlüsselter Upload, automatische Löschung in 60 Minuten.

CR2 zu ICO umwandeln

Häufig gestellte Fragen

CR2 (Canon RAW CR2) 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 CR2 when its particular strengths match the publishing target.

CR2 (Canon RAW CR2) is an image formato used to store raster graphics — a two-dimensional grid of pixels describing a picture. It is part of the raster & vector images family e designed around a specific trade-off between tamanho do arquivo, visual fidelity, e feature support (transparency, colour depth, compressão type). Photographers, web designers, e content creators choose CR2 when its particular strengths match the publishing target.

Most desktop photo viewers (Windows Photos, macOS Preview, GIMP, Photoshop, Affinity Photo) open CR2 natively. On mobile, iOS Photos and Google Photos display CR2 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 CR2 to JPG or CR2 to PNG converter.

Most desktop photo viewers (Windows Photos, macOS Preview, GIMP, Photoshop, Affinity Photo) abrir CR2 natively. On mobile, iOS Photos e Google Photos display CR2 no gallery when suportado por the OS. If the formato is rare ou new, converter to JPG ou PNG first — both are universally readable — usando our CR2 to JPG ou CR2 to PNG converter.

Upload the CR2 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; CR2 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.