Dedupler - Laravel package prevent's file duplications

Stop storing duplicate files in your Laravel application.

Tired of seeing the same file stored multiple times? When users upload duplicates, your storage bloats, backups grow, and data consistency suffers.

Dedupler is an elegant Laravel package that solves this once and for all. It automatically prevents file duplicates using SHA-1 hashing and provides a beautiful polymorphic API to manage your attachments.

✨ Why Dedupler?

🚫 Zero Duplicates - Automatic deduplication using SHA-1 hashing
🔗 Polymorphic Magic - Attach files to any model with ease
💾 Storage Efficient - Save significant disk space
🎯 Simple API - Intuitive methods for attachment management
⚡ Laravel Native - Seamlessly integrates with Laravel's ecosystem

🚀 Quick Start

1. Install via Composer

composer require maxkhim/laravel-storage-dedupler

(Optional) Analyse legacy storage directory

Finds duplicate files by SHA1 hash in directory and subdirectories and calculate potential disk space savings

php artisan dedupler:analyse-legacy /absolute/path/to/legacy/storage/directory

2. Init package

This command make all necessary migrations, and verifies application configuration (storage, models, etc.) to ensure the package is ready to use

php artisan dedupler:install

🔧 How to use

1. Use Facade Dedupler to Store Deduplicated files

/** @var \Illuminate\Http\UploadedFile $file */
/** @var \Maxkhim\Dedupler\Models\UniqueFile $uniqueFile */
$uniqueFile = Dedupler::storeFromUploadedFile($file);

/** @var string $absolutePathToFile */
/** @var \Maxkhim\Dedupler\Models\UniqueFile $uniqueFile */
$uniqueFile = Dedupler::storeFromPath($absolutePathToFile);

/** @var string $fileContent */
/** @var \Maxkhim\Dedupler\Models\UniqueFile $uniqueFile */
$uniqueFile = Dedupler::storeFromContent($content, 'direct_content_file.ext');

2. Add Trait to Your Model to keep deduplicated files attached to models

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Maxkhim\Dedupler\Traits\Deduplable;

class Post extends Model
{
    use Deduplable;
}

$post = new Post([...]);

/** @var \Illuminate\Http\UploadedFile $file */
/** @var \Maxkhim\Dedupler\Models\UniqueFile $uniqueFile */
$uniqueFile = $post->storeUploadedFile($file);

/** @var \Maxkhim\Dedupler\Models\UniqueFile $uniqueFile */
$uniqueFile = $post->storeLocalFile($absolutePathToFile);

/** @var \Maxkhim\Dedupler\Models\UniqueFile $uniqueFile */
$uniqueFile = $post->storeContentFile($content, 'direct_content_file.ext');

3. Detach unique files from models

$post->detachUniqueFile($sha1_hash)

About Deduplication

When you upload the same file multiple times:

// First upload - file is stored
$file1 = $post->storeUploadedFile($sameFile);
OR
$file1 = Dedupler::storeFromUploadedFile($sameFile);
// Second upload - returns existing UniqueFile, no duplicate created
$file2 = $post->storeUploadedFile($sameFile);
OR
$file1 = Dedupler::storeFromUploadedFile($sameFile);

$file1->id === $file2->id; // true - same database record and same file in storage

🛣️ API Reference

Enable RESTapi endpoint to check file existence

DEDUPLER_REST_ENABLED=true

GET http://localhost:8080/api/dedupler/v1/files/da39a3ee5e6b4b0d3255bfef95601890afd80709

{
	"success": true,
	"data": {
		"hash": "da39a3ee5e6b4b0d3255bfef95601890afd80709",
		"sha1_hash": "da39a3ee5e6b4b0d3255bfef95601890afd80709",
		"md5_hash": "d41d8cd98f00b204e9800998ecf8427e",
		"exists": false,
		"filename": "da39a3ee5e6b4b0d3255bfef95601890afd80709.pdf",
		"path": "da\/39\/da39a3ee5e6b4b0d3255bfef95601890afd80709.pdf",
		"mime_type": "application\/pdf",
		"size": 102400,
		"size_human": "100 KB",
		"disk": "deduplicated",
		"status": "completed",
		"created_at": "2025-10-22T18:40:41.000000Z",
		"updated_at": "2025-10-22T18:40:41.000000Z",
		"links_count": 94
	}
}

License

The MIT License (MIT).

Prevent Duplicate Files with the Dedupler Package for Laravel