Sauver vs. sauvegarder
While both sauver and sauvegarder can be translated as to save in English, they are not interchangeable. Sauver implies an act of rescue from immediate and concrete danger, while sauvegarder focuses on protecting or preserving something valuable from potential future harm.
Sauver
A2This verb means to save in the sense of rescuing someone or something from immediate peril, death, or a disastrous situation. It's about an intervention to prevent a negative outcome that is happening now. In everyday computing, it's often used informally instead of sauvegarder.
Le pompier a risqué sa vie pour sauver la famille de l'incendie.
(The firefighter risked his life to save the family from the fire.)
Cette injection de capital a permis de sauver l'entreprise de la faillite.
(This capital injection made it possible to save the company from bankruptcy.)
Il a sauté dans l'eau glacée pour sauver son chien de la noyade.
(He jumped into the icy water to save his dog from drowning.)
Merci de m'avoir prêté de l'argent, tu m'as sauvé la mise !
(Thanks for lending me money, you really saved the day!)
Pense à sauver ton document avant de fermer l'ordinateur.
(Remember to save your document before shutting down the computer.)
Sauvegarder
B1This verb means to save in the sense of safeguarding, protecting, preserving, or backing up something of value. The action is preventative, aimed at avoiding future loss or degradation. It is the correct and primary term used in computing for saving files and data.
Il faut sauvegarder régulièrement ses fichiers sur un disque dur externe.
(You must regularly back up your files on an external hard drive.)
L'UNESCO a pour mission de sauvegarder le patrimoine culturel de l'humanité.
(UNESCO's mission is to safeguard the cultural heritage of humanity.)
Le nouveau traité vise à sauvegarder les intérêts économiques du pays.
(The new treaty aims to protect the country's economic interests.)
Des mesures sont prises pour sauvegarder les espèces menacées.
(Measures are being taken to protect endangered species.)
Le politicien a fait une déclaration publique pour sauvegarder sa réputation.
(The politician made a public statement to safeguard his reputation.)
Summary
In essence, use sauver for an act of rescue from a present and tangible danger (saving a life, a company, a situation). Use sauvegarder for a preventative action to protect or preserve something valuable from potential future harm (backing up data, preserving heritage, protecting interests).