Full vs Incremental Backups: What's the Difference?
Full and incremental backups work differently, but both can play an important role in protecting your website. Learn what they mean and how WebsiteSave uses incremental backups.
When you set up website backups, you may come across terms like full backup and incremental backup.
At first, the difference can sound complicated.
A full backup means creating a complete copy of the website files included in the backup. An incremental backup focuses on what has changed since an earlier backup.
Both approaches have a place in backup strategies. The important thing is understanding what each one means and why a backup service may use one approach instead of another.
What is a full backup?
A full backup is a complete copy of the website files being backed up at that point in time.
Imagine your website contains:
- Images
- Themes
- Plugins
- Scripts
- Stylesheets
- Other website files
A full backup creates a backup containing the files included in the selected backup scope.
For example, if your website has 10 GB of files, a full backup may contain the complete 10 GB of website files.
This makes the concept straightforward: the backup represents the complete set of files at that point in time.
What is an incremental backup?
An incremental backup works differently.
Instead of backing up everything again, it focuses on files that have changed since an earlier backup.
Imagine your website has 10 GB of files.
On Monday, a full backup is created.
On Tuesday, only 200 MB of files change.
An incremental backup can focus on those changed files rather than creating another complete 10 GB copy.
On Wednesday, another group of files changes.
The next incremental backup can capture those changes as well.
The result is a backup history that reflects how your website changed over time.
A simple example
Imagine you have a website with 5 GB of files.
On Monday:
Full backup → 5 GB
On Tuesday:
200 MB changed → incremental backup
On Wednesday:
100 MB changed → incremental backup
On Thursday:
300 MB changed → incremental backup
Instead of repeatedly creating a new 5 GB backup every day, incremental backups can focus on the files that actually changed.
This can make regular backups more efficient, especially for websites where only a relatively small amount of data changes between backup points.
Full vs incremental backups
The easiest way to understand the difference is to think about what each backup captures.
| Backup type | What it captures | Typical advantage |
|---|---|---|
| Full backup | The complete backup scope | Simple, self-contained backup |
| Incremental backup | Files that changed since an earlier backup | Avoids repeatedly backing up unchanged files |
Neither approach is automatically better in every situation.
A full backup is straightforward and gives you a complete copy at that point.
Incremental backups can make regular backup operations more efficient because unchanged files don’t need to be copied again every time.
Why not create a full backup every time?
Creating a complete backup every time can mean repeatedly copying files that haven’t changed.
Consider a website with 20 GB of files.
If only 100 MB changes each day, creating another 20 GB backup every day means repeatedly processing a large amount of unchanged content.
For a website that changes frequently, this can make the backup process less efficient.
Incremental backups provide another approach: focus on what changed instead of repeatedly copying what didn’t.
Why incremental backups are useful for websites
Websites often contain a mixture of files that rarely change and files that change regularly.
For example:
- An old image may remain unchanged for months.
- A stylesheet may change during a redesign.
- A plugin may be updated.
- New media may be uploaded.
- Website code may be modified.
There is little value in treating every file as new every time a backup runs.
Incremental backups allow the backup history to focus on the changes between backup points.
This can be particularly useful for websites that are updated frequently.
How WebsiteSave uses incremental backups
WebsiteSave uses incremental backups as part of its website backup approach.
Instead of repeatedly treating the entire website as completely new, WebsiteSave keeps track of changes across backup points and focuses on the website files that need to be backed up.
This also helps provide useful backup history.
You can look at previous backup points and use them when you need to recover website files.
That history is important because a backup isn’t only about having a copy somewhere.
It’s also about being able to look back and understand what your website files looked like before something changed.
Does incremental mean you can’t restore older files?
No.
Incremental backup does not mean that older versions of your files simply disappear.
The purpose of maintaining backup history is to give you access to files from previous backup points when you need them.
For example, suppose you update a website file on Wednesday but later realize that the previous version was the one you actually needed.
If that earlier version is available in your backup history, you can use the appropriate restore option to recover it.
This is one reason backup history matters just as much as the backup method itself.
You can learn more about the different ways WebsiteSave lets you recover files in WebsiteSave Restore Options: What Can You Restore?.
Incremental backups and recovery
A good backup strategy should not only make backups. It should also make recovery practical.
With WebsiteSave, backup history can be used for different recovery situations.
For example:
One file was changed.
You can restore the individual file from an appropriate backup.
Several files were changed.
You can recover the relevant changed files from an earlier backup point.
A file was deleted.
You can use your backup history to recover the deleted file if it is available in an earlier backup.
This is where incremental backups become more than a technical concept.
They contribute to a history of how your website files changed over time.
Does a full backup use more storage?
Generally, a full backup contains the complete set of files being backed up, so creating full backups repeatedly can require more storage than an approach that avoids repeatedly storing unchanged files.
Incremental backups can reduce unnecessary duplication by focusing on changes.
However, the actual storage used depends on factors such as:
- How often backups run.
- How frequently your website changes.
- How much content changes between backups.
- How long backup history is retained.
- How the backup service stores and manages that history.
So it is better to look at the complete backup strategy rather than judging it from the words “full” or “incremental” alone.
Which type of backup is better?
There isn’t one answer for every website.
Full backups are easy to understand and provide a complete copy at a particular point.
Incremental backups can be more efficient when websites change regularly because they focus on what has changed rather than repeatedly copying everything.
For a website backup service, the more important question is not simply:
“Does it use full or incremental backups?”
A better question is:
“Can I reliably recover the files I need when something goes wrong?”
A backup strategy should ultimately support recovery.
What should you look for in a website backup service?
When evaluating a backup service, don’t stop at the backup type.
Look at the complete experience.
Ask whether you can:
- Access previous backup points.
- Find the files you need.
- Restore an individual file.
- Recover changed files.
- Recover deleted files.
- Understand what happened before an unwanted change.
- Keep enough backup history for your recovery needs.
The backup method matters, but what you can actually do with the backup matters more.
Backup history gives you more than a copy
Think of your backup history as a record of your website over time.
Monday shows one version.
Tuesday shows what was available after the next set of changes.
Wednesday gives you another reference point.
If something goes wrong on Thursday, those earlier points can help you work backward and determine which files you need to recover.
That’s especially useful when you don’t immediately know what caused the problem.
WebsiteSave combines backup history with file change visibility and security scanning to help you understand what changed and recover the website files you need.
You can learn more about WebsiteSave’s features or explore WebsiteSave plans.
The takeaway
A full backup creates a complete copy of the files included in the backup.
An incremental backup focuses on files that have changed rather than repeatedly copying everything.
Full backups are simple and self-contained. Incremental backups can make regular backup operations more efficient, particularly for websites where only a portion of files changes between backup points.
But the backup method is only part of the picture.
What really matters is having useful backup history and practical recovery options when something goes wrong.
The goal isn’t simply to create backups. It’s to have the right files available when you need to recover them.
Protect what you build
WebsiteSave helps you back up your website, understand important changes, and recover with confidence.