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Web Development · head to head

Preact vs Skopeo

Preact logo

Preact

Web Development

3kB alternative to React with the same modern API

From
Free
Rated
-
Full reviewWebsite
Skopeo logo

Skopeo

Cloud

Inspect, copy and sign container images without pulling them

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Preact compatibility through preact/compat is good but not total, and some React libraries break in ways that are hard to diagnose; Skopeo single-purpose: it neither builds nor runs images, so it is one tool in a chain rather than a solution
  • They diverge on capability: Preact covers 3kB runtime, Skopeo covers Remote inspection.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Preact and Skopeo actually diverge.

Attributes where Preact and Skopeo differ
AttributePreactSkopeo
PlatformsWebLinux, macOS
CategoryWeb DevelopmentCloud

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

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 Preact

  • 3kB runtime
  • preact/compat
  • Same modern API
  • Fast rendering

Only in Skopeo

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

What people use each for

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

Preact

  • Embedded widgets that load inside someone else’s page and must stay smallnot Skopeo
  • Marketing and content sites where JavaScript payload affects Core Web Vitalsnot Skopeo
  • Applications targeting low-bandwidth or low-powered devicesnot Skopeo

Skopeo

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

Where each one falls short

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

Preact

  • Compatibility through preact/compat is good but not total, and some React libraries break in ways that are hard to diagnose
  • Behavioural differences from React exist in edge cases, particularly around event handling
  • A much smaller community, so unusual problems have fewer existing answers than React

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

Pricing, plan by plan

Preact

Free
  • PreactFree
    • Full library
    • Commercial use permitted
    • No usage limits

Skopeo

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

Which should you pick?

Choose Preact if

  • You need 3kb runtime.
  • You want to start without paying.
  • You also want preact/compat.
Preact review

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

Questions people ask

Is Preact or Skopeo better?
Neither clearly leads. Preact starts at Free and Skopeo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Preact or Skopeo?
Preact starts at Free and Skopeo at Free.
Does Preact or Skopeo run on more platforms?
Preact runs on Web. Skopeo runs on Linux, macOS.
Can I use Preact for free?
Both have a free tier, so you can try either at no cost before committing.
What is Preact best used for?
Preact is most often used for embedded widgets that load inside someone else’s page and must stay small, marketing and content sites where javascript payload affects core web vitals, applications targeting low-bandwidth or low-powered devices. Of those, embedded widgets that load inside someone else’s page and must stay small and marketing and content sites where javascript payload affects core web vitals are not what Skopeo is typically brought in for.
What can Preact do that Skopeo cannot?
Preact covers 3kB runtime, preact/compat, Same modern API, Fast rendering. Skopeo covers Remote inspection, Registry-to-registry copy, Format conversion, Image signing.

Answered from the vendors’ own pages

Preact: Is Preact free?

Yes, open source under the MIT licence.

Skopeo: Is Skopeo free?

Yes, open source with no licence fee.

Preact: Can I use React libraries with Preact?

Most, through the preact/compat layer. Compatibility is good but not complete, so libraries relying on React internals can break.

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.

Preact: Why choose Preact over React?

Bundle size, almost always. If payload is not a binding constraint, React’s ecosystem is usually the better trade.

Skopeo: Can Skopeo run containers?

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

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