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Measured entry

shadcn-resizable

cardunclassified

A client-side source component that wraps react-resizable-panels with shadcn-style panel, group, and separator exports. It ships as copied TSX rather than a standalone widget, and depends on react-resizable-panels, Lucide React, Tailwind utility classes and theme tokens, plus the shadcn cn helper resolved through the project alias.

Specimen
Harness screenshot of shadcn-resizable at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-resizable at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-resizable at 1440 pixels wide
Harness screenshot at 1440 pixels wide. No horizontal overflow recorded.

Measured

Every value below was written by the harness on the run that produced the frames above. None of it is derived from the prose.

Harness measurements recorded for shadcn-resizable
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical0
Axe serious0
Axe moderate2
Axe minor0
Gzip marginal38.6 KB (104.0 KB build, 65.4 KB baseline)
Bare modeFAIL
Provider requiredNO
Demo usedwritten from the component source API

What the harness recorded

BARE BUILD

✗ Build failed in 30.03s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/cut/components/ui/resizable.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A sound, thin wrapper that builds, mounts, and stays contained across the tested layouts. It needs a shadcn-style setup before it will work in a bare project because the source imports the shared cn helper through the shadcn alias. Fix the demo's nested main landmark before shipping it.

Use it if

  • You need adjustable split panes for editors, inboxes, dashboards, or other desktop workspaces.
  • Your app already uses shadcn conventions, Tailwind theme tokens, and the cn utility.
  • You want direct ownership of a small wrapper around react-resizable-panels.

Skip it if

  • Your interface should stack content instead of preserving draggable panes on narrow screens.
  • You want a framework-neutral package with no Tailwind, alias, or shadcn utility assumptions.
  • You cannot accept the added client bundle cost of the panel library.
  • Your page already defines a main landmark and you plan to copy the demo markup unchanged, since that demo nests another main landmark.

Install

Installation record for shadcn-resizable
Declared dependenciesreact-resizable-panels@^4
Missing on installreact-resizable-panels@^4
Bare installfails once the shadcn-style helpers are removed, so it needs that setup
Providerno provider required in the harness

In a non-shadcn project, add react-resizable-panels and Lucide React, provide a compatible cn class-merging helper, configure the source alias or replace that import, and supply Tailwind utilities plus matching border, ring, and background theme tokens. Mark the file for client rendering where the framework requires it.

Source and credit

This page is a review, not a copy. The component source lives with its author and this site does not republish it. Read the license before you use anything.

Author repository

github.com/shadcn-ui/ui
License
MIT
Record published
2026-08-13

Alternatives

Other published entries for the card pattern, ordered by what they measured: mounts first, then clean axe scans, then bare-mode passes, then the smaller bundle.