Softwr

Cloud · head to head

Skopeo vs VictoriaMetrics

Skopeo logo

Skopeo

Cloud

Inspect, copy and sign container images without pulling them

From
Free
Rated
-
Full reviewWebsite
VictoriaMetrics logo

VictoriaMetrics

Cloud

Fast, cost-effective time series database for metrics

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Skopeo single-purpose: it neither builds nor runs images, so it is one tool in a chain rather than a solution; VictoriaMetrics promQL compatibility is very close but not identical, and MetricsQL extensions do not port back
  • They diverge on capability: Skopeo covers Remote inspection, VictoriaMetrics covers PromQL compatible.

Where they differ

Only the attributes on which Skopeo and VictoriaMetrics actually diverge.

Attributes where Skopeo and VictoriaMetrics differ
AttributeSkopeoVictoriaMetrics
PlatformsLinux, macOSLinux, Docker, Kubernetes, Self-hosted

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated), category (Cloud).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Skopeo

  • Remote inspection
  • Registry-to-registry copy
  • Format conversion
  • Image signing

Only in VictoriaMetrics

  • PromQL compatible
  • Low resource use
  • Single binary or cluster
  • Remote write target

What people use each for

The jobs each tool is most often brought in to do.

Skopeo

  • Promoting images between staging and production registries without a round tripnot VictoriaMetrics
  • Inspecting an image’s contents before deciding to deploy itnot VictoriaMetrics
  • Mirroring images into an air-gapped or internal registrynot VictoriaMetrics

VictoriaMetrics

  • Keeping months or years of Prometheus metrics without the memory costnot Skopeo
  • High-cardinality metrics where Prometheus strugglesnot Skopeo
  • Consolidating metrics from many Prometheus instances into one queryable storenot Skopeo

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Skopeo

  • Single-purpose: it neither builds nor runs images, so it is one tool in a chain rather than a solution
  • Command syntax with transport prefixes such as docker:// is unusual and trips people up initially
  • Documentation is sparse compared with the rest of the container ecosystem

VictoriaMetrics

  • PromQL compatibility is very close but not identical, and MetricsQL extensions do not port back
  • Smaller community than Prometheus, so fewer guides and third-party integrations
  • The clustered version has meaningfully more moving parts than the single binary suggests
  • Some enterprise features sit outside the open-source offering

Pricing, plan by plan

Skopeo

Free
  • SkopeoFree
    • Full functionality
    • No usage limits
    • Community support

VictoriaMetrics

Free
  • VictoriaMetricsFree
    • Full functionality
    • No data limits
    • Community support

Which should you pick?

Choose Skopeo if

  • You need remote inspection.
  • You want to start without paying.
  • You work on Linux, macOS.
  • You also want registry-to-registry copy.
Skopeo review

Choose VictoriaMetrics if

  • You need promql compatible.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want low resource use.
VictoriaMetrics review

Questions people ask

Is Skopeo or VictoriaMetrics better?
Neither clearly leads. Skopeo starts at Free and VictoriaMetrics at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Skopeo or VictoriaMetrics?
Skopeo starts at Free and VictoriaMetrics at Free.
Does Skopeo or VictoriaMetrics run on more platforms?
Skopeo runs on Linux, macOS. VictoriaMetrics runs on Linux, Docker, Kubernetes, Self-hosted.
Can I use Skopeo for free?
Both have a free tier, so you can try either at no cost before committing.
What is Skopeo best used for?
Skopeo is most often used for promoting images between staging and production registries without a round trip, inspecting an image’s contents before deciding to deploy it, mirroring images into an air-gapped or internal registry. Of those, promoting images between staging and production registries without a round trip and inspecting an image’s contents before deciding to deploy it are not what VictoriaMetrics is typically brought in for.
What can Skopeo do that VictoriaMetrics cannot?
Skopeo covers Remote inspection, Registry-to-registry copy, Format conversion, Image signing. VictoriaMetrics covers PromQL compatible, Low resource use, Single binary or cluster, Remote write target.

Answered from the vendors’ own pages

Skopeo: Is Skopeo free?

Yes, open source with no licence fee.

VictoriaMetrics: Is VictoriaMetrics free?

The open-source version is free with no data limits. An enterprise edition and cloud service are paid.

Skopeo: Why copy images without pulling them?

A registry-to-registry copy avoids downloading and re-uploading gigabytes, which is faster and much cheaper on bandwidth in CI.

VictoriaMetrics: Does it replace Prometheus?

It can, but most teams keep Prometheus for scraping and use VictoriaMetrics as the long-term store behind it.

Skopeo: Can Skopeo run containers?

No. It only inspects, copies, signs and deletes images. Running them is Podman’s or Docker’s job.

VictoriaMetrics: Is PromQL fully supported?

Very nearly. It implements PromQL and extends it with MetricsQL, though a small number of edge-case behaviours differ.

Share

Related pages

More on Skopeo

More on VictoriaMetrics

Keep looking

Other head to heads