Internet Archive Html5 Uploader 1.7.0 Official

Detailed Report: Internet Archive HTML5 Uploader (Version 1.7.0) 1. Executive Summary Internet Archive HTML5 Uploader v1.7.0 is a client-side JavaScript component designed to facilitate file uploads to the Internet Archive’s (archive.org) S3-like storage infrastructure. It replaces legacy Flash-based uploaders (e.g., jquery.uploader.flash.js ) and the older html5uploader.js (pre-v1.x). Version 1.7.0 represents a stable release focused on resumable uploads, chunked file processing, real-time progress feedback, and improved error handling. The uploader is used primarily by:

https://archive.org/create/ (item creation page) https://archive.org/upload/ (direct upload interface) Third-party tools that interface with the Archive’s S3 API.

2. Version Identification | Attribute | Details | |-------------------|---------------------------------| | Name | Internet Archive HTML5 Uploader | | Version | 1.7.0 | | Release period | ~2016–2017 (post-Flash deprecation) | | License | GNU Affero General Public License v3 (AGPLv3) | | Language | JavaScript (ES5) | | Dependencies | None (vanilla JS, though often wrapped in jQuery in Archive’s UI) | | Target runtime | Modern browsers (Chrome, Firefox, Edge, Safari 10+) |

3. Architecture Overview The uploader operates in the browser and communicates with https://s3.us.archive.org (or a configured endpoint) using standard HTTP multipart uploads with support for the AWS S3 API’s multipart upload features. 3.1 Core Components +------------------------+ | HTML5Uploader | |------------------------| | - options | | - files[] | | - xhrs[] | | - multipartUploads[] | +------------------------+ | |---> ChunkedFileReader (File API) | |---> S3 Multipart Helpers (initiate, uploadPart, complete) | |---> Event Emitter (progress, error, complete, retry) internet archive html5 uploader 1.7.0

3.2 Upload Flow

File selection – via <input type="file"> or drag & drop. Validation – size limits, type allowlist/denylist. Multipart initiation – calls S3 CreateMultipartUpload . Chunked upload – default chunk size: 5 MB (minimum for S3 multipart). Parallel uploads – configurable concurrency (default: 3–5 parts simultaneously). Resume capability – saves upload ID and ETags in localStorage / sessionStorage . Completion – calls CompleteMultipartUpload or AbortMultipartUpload on failure.

4. Key Features 4.1 Resumable Uploads

Automatically resumes interrupted uploads (browser crash, network loss, tab close). Stores upload metadata in IndexedDB or localStorage under key: ia_uploader_{uploadId} . Retry logic: exponential backoff (initial delay 1s, max 30s).

4.2 Chunked Uploading

Splits files into byte-accurate chunks using Blob.slice() . Each chunk is uploaded as a separate PUT request with Content-Range header. Supports files larger than 100 GB (tested up to 500 GB in internal Archive usage). Detailed Report: Internet Archive HTML5 Uploader (Version 1

4.3 Parallelism & Throttling

Limits simultaneous XHR requests to avoid browser/network saturation. Queue management: waiting chunks are dispatched as active ones complete.