CoreUpload v5 . ASP.NET Core 8+

Direct-to-S3 / Azure tus 1.0 resume IndexedDB Golden Retriever 30 locales Webcam & screen capture

Demo Gallery

Explore 126 live demos covering every feature of CoreUpload for ASP.NET Core - including 18 v5 transports & capture sources (S3 / Azure / GCS / tus / URL import + webcam / screen / audio + i18n + cross-tab + custom retry + encryption-at-rest + cloud picker). Each demo includes working code and a live upload component.

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v5 Transports & Features

New in 5.0

Pluggable strategies, IndexedDB-backed resume, an inline image editor, browser-direct cloud uploads, NDJSON streaming progress, Web Worker hashing, plus webcam / screen / audio capture sources and 20 built-in locales.

102 Direct-to-S3 multipart 103 Direct-to-Azure Blob 115 Direct-to-GCS resumable 104 tus 1.0 protocol 105 URL import (NDJSON) 106 IndexedDB resume 107 Interactive image crop 108 Web Worker hashing 109 Custom strategy 110 Parallel chunk tuning 111 Webcam capture 112 Screen capture 113 Audio capture 114 Internationalization (28 locales) 116 Custom retry policy 117 Cross-tab coordination 118 Encryption-at-rest (AES-GCM) 119 Remote sources (Drive...)

Getting Started

Set up CoreUpload and learn the basics.

1 Overview 2 Minimal Setup 3 Configuration 4 Tag Helper Basics 5 JavaScript API

Basic Upload

Single, multiple, auto, and manual upload patterns.

6 Single File 7 Multiple Files 8 Auto Upload 9 Manual Upload 10 Custom Button 11 Upload in Form 12 Programmatic Upload 13 Pre-loaded Files 101 Clipboard Paste

Validation

Client-side and server-side validation rules.

14 File Extensions 15 Max Size 16 Min Size 17 MIME Type 18 Max Count 19 Client Validation 20 Server Validation 21 Image Dimensions 22 Duplicate Detection 23 Combined Rules

Appearance

Themes, dark mode, CSS variables, and custom styles.

24 Default 25 Bootstrap 26 Tailwind 27 Dark Mode 125 Drop Zone Styles 28 CSS Variables 29 Custom Button 30 Icon-Only 31 Compact 32 Full-Width 33 Animations

Progress

Progress bars, percentage, speed, ETA, and custom progress UI.

34 Progress Lab 126 Progress Bar Styles 35 Percentage 36 Speed & ETA 37 Circular 38 Striped Bar 39 Per-File 40 Aggregate 41 Custom UI

Drag and Drop

Drop zones, full-page drop, folder upload, and overlays.

42 Basic Drop Zone 43 Full Page 44 Styled 45 Preview 46 Multiple Zones 47 Folder Upload 48 Drop + Browse 49 Overlay

Chunked Upload

Split large files into chunks for reliable transfer.

124 Instant Upload (Dedupe) 50 Basic Chunked 51 Custom Chunk Size 52 Resume 53 Parallel Chunks 54 Large File 1GB+ 55 Retry 56 SSE Progress 57 Chunk Visualization

Queue

Sequential, concurrent, and priority upload queues.

122 Keyboard Accessibility 58 Sequential 59 Concurrent 60 Reorder 61 Pause/Resume 62 Cancel 63 Priority

Events

Hook into upload lifecycle events and build custom behavior.

64 All Events 65 Server Events 66 Filter OnSelect 67 Custom Progress 68 Redirect 69 Error Recovery 70 Event Log

Image Handling

Previews, thumbnails, crop, resize, EXIF, and galleries.

123 Multi-Rendition Upload 71 Preview 72 Thumbnail Grid 73 Crop 74 Resize 75 EXIF 76 Gallery 77 Avatar 78 Metadata

Custom UI

External triggers, tables, cards, modals, and wizards.

79 External Trigger 80 External Progress 81 Custom Table 82 Card List 83 Inline 84 Modal 85 Wizard

Integration

Forms, email attachments, CMS, e-commerce, and more.

86 Complex Form 87 Email Attachments 88 Data Table 89 Chat 90 CMS Media 91 E-Commerce 92 Support Ticket 93 Multi-Step 120 Metadata Fields

Security

Antiforgery, authentication, and rate limiting.

94 Antiforgery 95 Authenticated 96 Role-Based 97 Virus Scan 98 Rate Limiting 121 AI Moderation & OCR

Advanced

Custom storage providers and SQL Server integration.

99 SQL Server Provider 100 Custom Provider