PNG vs SGI — Differences, File Size & When to Use Each

PNG vs SGI

Ein detaillierter Vergleich von PNG Image und SGI Image — Dateigröße, Qualität, Kompatibilität und welches je nach Workflow zu wählen ist.

PNG → SGI umwandeln SGI → PNG umwandeln

PNG

PNG Image

Raster & Vector Images

PNG is a lossless image format that supports transparency. It is ideal for graphics, logos, screenshots, and any image where preserving exact pixel data is important.

Über PNG-Dateien

SGI

SGI Image

Raster & Vector Images

SGI (Silicon Graphics Image) is a raster image format developed by Silicon Graphics for use on their IRIX workstations. It supports both uncompressed and RLE-compressed storage with up to 4 channels including alpha.

Über SGI-Dateien

Vorteilsvergleich

PNG Vorteile

Lossless compression — every save preserves the original pixels perfectly.
Full 8-bit alpha channel for smooth transparency.
Excellent for text, UI screenshots, logos, and line art.
Royalty-free and an ISO standard (ISO/IEC 15948).
Supports 16-bit color depth for high-fidelity work.

SGI Vorteile

Historic VFX pipeline format.
16-bit channel support.
RLE compression.
ImageMagick compatibility.

Einschränkungen

PNG Einschränkungen

Much larger than JPEG for photographs (no perceptual compression).
No native animation in most software (APNG support is inconsistent).
No CMYK support — web and screen only, not print.
Metadata capabilities are less rich than JPEG's EXIF.

SGI Einschränkungen

Legacy — SGI Inc. is gone.
Superseded by OpenEXR/DPX in film.
Niche tooling.

Technische Spezifikationen

Spezifikation	PNG	SGI
MIME type	image/png	image/x-sgi
Compression	Lossless — DEFLATE (zlib)	None or RLE
Color depth	1, 2, 4, 8 or 16 bits per channel	—
Max dimensions	2^31 − 1 pixels per side (2.1 billion)	—
Transparency	Full 8-bit alpha channel	—
Standard	ISO/IEC 15948:2004	—
Extensions	—	.sgi, .rgb, .rgba
Bit depth	—	8 or 16 bits per channel

Typische Dateigrößen

PNG

Icon or small logo 2–20 KB
UI screenshot (1920×1080) 200–800 KB
High-res photo (12 MP) 10–30 MB
Print-ready illustration 5–50 MB

SGI

1080p 8-bit SGI frame 4-8 MB
4K 16-bit SGI 50-100 MB

Bereit zum Umwandeln?

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

PNG zu SGI umwandeln SGI zu PNG umwandeln

Häufig gestellte Fragen

PNG (Portable Network Graphics) is a lossless raster image format created in 1996 as a patent-free alternative to GIF. It supports transparency, making it ideal for logos, icons, and web graphics.

PNG (Portable Network Graphics) is a sem perdas raster image formato created in 1996 como um patent-free alternative to GIF. It suporta transparência, making it ideal para logos, icons, e web graphics.

PNG files open natively in all modern operating systems, web browsers, and image editors including Photoshop, GIMP, Paint.NET, and Canva.

PNG arquivos abrir natively in all moderno operating systems, web browsers, e image editors including Photoshop, GIMP, Paint.NET, e Canva.

WebP offers 26% smaller file sizes than PNG with equivalent quality. Use WebP for web delivery when browser support is sufficient. Use PNG when maximum compatibility or professional editing workflows are needed.

WebP oferece 26% smaller tamanho do arquivos than PNG com equivalent quality. usar WebP para web delivery when browser support is sufficient. usar PNG when máximo compatibilidade ou profissional editando workflows are needed.