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KopiaLens

Features

Everything in KopiaLens

Back up, restore and see inside your backups. Everything here is free, except the tools that remove data from inside old backups, which are Pro.

Dashboard

See where the space goes

Every folder you back up, with the space it really takes after deduplication and how much you'd get back by deleting its snapshots.

  • The real size of every folder, and its share of the repository
  • File counts and the latest snapshot at a glance
  • Double-click a folder to look inside
KopiaLens Dashboard listing backed-up folders with physical size, freeable space and dedup ratioKopiaLens Dashboard listing backed-up folders with physical size, freeable space and dedup ratio

Tasks

Backups that run on their own

KopiaLens takes each folder's backups on its schedule, retries the ones that fail, and keeps a record of every backup and maintenance run.

  • Back up a new folder, or any folder right now
  • Pause backups for an hour, a week, or until you resume
  • Get an alert when a backup fails
KopiaLens Tasks list with backups and maintenance runs, one open with its logKopiaLens Tasks list with backups and maintenance runs, one open with its log

Snapshots

Find the snapshots that cost the most

Every snapshot with its size, the new data it added, and how much deleting it would free. The retention rule that keeps each one sits next to it.

  • Sort by the space you'd get back
  • See which retention rule keeps each snapshot
  • Delete the snapshots you pick, free in every edition
KopiaLens Snapshots table sorted by reclaimable space with retention tagsKopiaLens Snapshots table sorted by reclaimable space with retention tags

Tree

Browse any snapshot like a disk

A folder tree for any snapshot, with sizes, file counts and dates. Show the real size after deduplication, filter to files over 1 GB, and act on any folder.

  • Size on disk and real size side by side
  • Mount a snapshot and browse it in your file manager
  • Restore, exclude or delete from the same place
KopiaLens Tree view of a snapshot with folder sizesKopiaLens Tree view of a snapshot with folder sizes

Churn

Catch the folders that grow every night

See how much new data each folder adds per day and which files are saved over and over. Caches, databases and virtual disks show up at the top.

  • New data per folder, per file type or per source
  • Spot files that change on every backup
  • Pick the time window and how deep to look
KopiaLens Churn view listing new data per day and rewrite ratio for each folderKopiaLens Churn view listing new data per day and rewrite ratio for each folder

Simulate

Try a retention policy before you use it

Enter how many hourly, daily, weekly, monthly and yearly snapshots to keep, and see what that policy would delete and free.

  • Compare policies without touching a snapshot
  • For one folder or the whole repository
  • Export the result as CSV
KopiaLens Simulate view with retention counts and the space a policy would freeKopiaLens Simulate view with retention counts and the space a policy would free

Policies

Exclusions that do what you meant

Every policy in one tree, with what each folder inherits. Edit schedules, retention and exclusion rules, and preview what a rule matches before you save it.

  • See which rules a folder inherits, and which it replaces
  • Preview the files a rule matches and the space it saves
  • Exclude & delete removes copies already in your backups (Pro)
KopiaLens Policies tab with the policy tree and a folder's exclusion rulesKopiaLens Policies tab with the policy tree and a folder's exclusion rules

Repository

Repository health in one place

Storage, compression savings and the maintenance schedule, with health checks, a backup check, and the old versions of big files worth pruning.

  • Run maintenance from the app
  • Verify that your backups can be read
  • Spot old versions that free the most on their own
KopiaLens Repository view with health checks, storage and maintenanceKopiaLens Repository view with health checks, storage and maintenance

Excluded

Check what isn't backed up

Compare the folders on your disks with what your snapshots hold. See what's backed up, what's excluded and what was missed, with sizes.

  • Not backed up, backed up, or everything
  • Sizes from the disk and from your snapshots side by side
  • Folders that Backblaze also keeps are marked
KopiaLens Excluded tab listing a drive's folders and what isn't backed upKopiaLens Excluded tab listing a drive's folders and what isn't backed up

Logs

A record of every change

The audit log keeps every action KopiaLens ran or prepared: deletes, restores, policy changes and more, with the time and kopia's result.

  • Every action, in every repository, never trimmed
  • Past jobs and every index run
  • Actions by AI agents carry the token's name
KopiaLens audit log listing recent actions with time, repository and resultKopiaLens audit log listing recent actions with time, repository and result

Backblaze

See inside Backblaze Personal Backup too

On Windows, KopiaLens reads what Backblaze Personal Backup keeps on the same computer and shows it next to your Kopia backups. It never changes anything in Backblaze.

  • Search every path Backblaze knows, backed up or excluded
  • See what Backblaze leaves out, and what Kopia keeps instead
  • Upload queue, sessions and health checks, free
KopiaLens Backblaze dashboard showing what Backblaze Personal Backup keepsKopiaLens Backblaze dashboard showing what Backblaze Personal Backup keeps

See it on your own repository

Download KopiaLens free. Open the repository you have, or start a new one.

Download KopiaLens