À propos des fichiers SNAP

SNAP (Snap Package · Format d'archive)

Lancement 2014 Par Canonical (Ubuntu)

Snap Package (.snap) est un format de fichier pris en charge par KaijuConverter pour l’archivage, l’échange professionnel et la conversion multiplateforme.

Famille

Archives & Compressed

Extension

.snap

Type MIME

application/vnd.snap

Utilisable comme

Entrée

L'histoire

COMMENT SNAP
A VU LE JOUR.

2014

2026

Snap packages were introduced by Canonical in 2014 as part of Ubuntu’s bet on universal, sandboxed application distribution for Linux. A .snap file is a SquashFS-compressed filesystem image containing an application, all its dependencies, and a YAML manifest (`snapcraft.yaml`) describing confinement rules and interfaces. Unlike DEB and RPM, snaps don’t need to worry about system libraries — each snap ships everything it needs, running inside its own sandbox with AppArmor or seccomp enforcement.

Snap has been controversial in the Linux community. Proponents love the cross-distro portability and the seamless auto-update story. Critics object to Canonical’s insistence on a single central store (snapcraft.io), the slower startup times from filesystem image mounting, and philosophical friction with traditional package management. Ubuntu and derivatives install snapd by default; Fedora, openSUSE, and Arch prefer Flatpak or traditional RPMs. In 2026, snap is alive primarily in the Ubuntu ecosystem.

CURIOSITÉS ET
ANECDOTES.

Every Ubuntu desktop ships with the Firefox snap as default — a controversial move when it happened in Ubuntu 22.04.

A .snap is a read-only SquashFS image that mounts via loop device — every snap app lives inside its own tiny filesystem.

Canonical's insistence on a single Snap Store (snapcraft.io) is one of the main community objections — Flatpak lets you federate repos.

Snap's "confinement" levels are strict, classic, and devmode — each with different security trade-offs.

IoT Ubuntu Core is built entirely from snaps — the kernel, drivers, and apps are all separate snap packages.

POINTS FORTS ET
LIMITES.

Points forts

Cross-distro portable — one .snap runs on Ubuntu, Fedora, Arch, etc.
Sandboxed with AppArmor + seccomp confinement.
Automatic updates with delta downloads.
Bundled dependencies eliminate "DLL Hell" for Linux.
First-class support in Ubuntu Core for IoT.

Limites

Slower app startup due to SquashFS mount overhead.
Canonical-controlled single store — no federation.
Disk usage higher than native packages.
Community pushback outside Ubuntu ecosystem.
Flatpak is the main competitor and preferred on non-Ubuntu distros.

Tailles et poids typiques

Small CLI tool snap

2-20 MB

Desktop app snap (Firefox, LibreOffice)

150-400 MB

Complex IDE snap

500 MB - 2 GB

Spécifications techniques

MIME type: application/vnd.snap
Extension: .snap
Container: SquashFS filesystem image
Manifest: snapcraft.yaml
Runtime: snapd (Canonical)

CONVERTIR DEPUIS
SNAP

snap zip snap 7z snap tar snap gz snap bz2 snap xz snap lzma snap zst snap lz4

Cas d'usage courants

Cross-distribution Linux apps, sandboxed application deployment