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Measured entry

shadcn-block-login-04

auth-formminimal-flat

A responsive sign-in page that ships as a page wrapper plus a LoginForm component. It combines email and password fields, social-login buttons, legal links, and a desktop-only image panel. It relies on shadcn UI primitives, the cn utility, Tailwind theme tokens, path aliases, and Radix UI beneath the registry components.

Specimen
Harness screenshot of shadcn-block-login-04 at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-block-login-04 at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-block-login-04 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-block-login-04
BuildOK
MountOK
Console errors1
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical0
Axe serious1
Axe moderate0
Axe minor0
Gzip marginal32.1 KB (97.5 KB build, 65.4 KB baseline)
Bare modeFAIL
Provider requiredNO
Demo usednone

What the harness recorded

CONSOLE

Failed to load resource: the server responded with a status of 404 (Not Found)

BARE BUILD

✗ Build failed in 31.10s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/blocks/login-04/components/login-form.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A solid visual starting point for teams already using shadcn conventions, but it is not production-ready authentication. It needs a shadcn-style setup to mount, and teams must fix the contrast issue, replace the missing image, and connect every action.

Use it if

  • You need a conventional credential login with optional social-provider entry points.
  • Your product already uses shadcn UI conventions and can wire the placeholder links and submit actions to real authentication.
  • You want a compact mobile form that expands into an image-backed split card on wider screens.

Skip it if

  • You need a drop-in component for a plain React project with no shadcn-style component layer.
  • Your accessibility release bar requires passing color contrast before adoption.
  • You want working authentication behavior rather than a presentational form with placeholder links and buttons.
  • You cannot supply and optimize the missing image asset used by the desktop panel.

Install

Installation record for shadcn-block-login-04
Declared dependenciesradix-ui
Missing on installnone
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 compatible Button, Card, Input, Label, and Field primitives, the cn class-merging utility, the expected import aliases, Tailwind utilities and theme tokens, plus Radix UI dependencies. Provide the image asset and implement authentication, recovery, signup, social login, and legal-link destinations.

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 auth-form pattern, ordered by what they measured: mounts first, then clean axe scans, then bare-mode passes, then the smaller bundle.