# facebookarchive/Shimmer

An easy way to add a simple, shimmering effect to any view in an iOS app.

Repository: https://github.com/facebookarchive/Shimmer
Canonical: https://ross.abutalabs.com/products/shimmer
Language: Objective-C
License: NOASSERTION
License Family: other
Archived: true
Last push: 2021-02-06T00:01:46+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4579, "days_push": 2035, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 9330, forks 1115 (observed 2026-08-28T04:10:30.561649+00:00)

## What it is
Shimmer is an Objective-C library that adds a shimmering effect to any iOS view, useful as an unobtrusive loading indicator. It was originally developed by Facebook for the Paper app and works via CALayer masks and CoreAnimation timing.

## Use cases
- add a shimmering loading effect to views in an iOS app
- show an unobtrusive loading indicator while content loads
- animate a label with a shimmer effect
- create skeleton-style loading placeholders in UIKit

## When to choose
- you need a lightweight shimmer effect in an Objective-C or legacy iOS project
- you want a simple, proven loading indicator with minimal setup
- you are targeting iOS 6 or later with UIKit

## When to avoid
- you are building in Swift and prefer modern alternatives like SwiftShimmer
- you need actively maintained libraries with recent updates
- you are not developing for iOS

## Facets
- artifact type: library
- maturity: maintenance
- function: animation, ui-components
- domain: mobile-development, frontend
- platform: -
- tags: shimmer-effect, loading-indicator, objective-c, uikit, facebook-archive, ios, mobile

## Member repositories
- facebookarchive/Shimmer (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:30.561649+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:22:28.752995+00:00, confidence not recorded.
  - readme: https://github.com/facebookarchive/Shimmer (fetched 2026-08-28T04:10:30.561649+00:00, sha dec31092276f)
- Data as of 2026-08-30T08:39:29.467469+00:00.