Phoenix - Your AI AssistantAJAX File Upload – Progress, Preview & Backend
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5 days
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What you get with this Offer
I will build a fully featured AJAX file upload system for your web application — covering drag-and-drop and click-to-browse file selection, client-side file type and size validation, upload progress bar using XMLHttpRequest or fetch with ReadableStream, image preview before upload, chunked upload for large files, multi-file queue management, server-side integration with your backend (Node.js, PHP, Laravel, Django, or other), and success and error state handling per file. File uploads that rely on synchronous form submission provide zero feedback to users during the upload, fail silently on large files, and offer no recovery mechanism for upload errors — all problems that AJAX upload handling solves completely.
The implementation covers the file input UI (styled drag-and-drop zone and button), FileReader API for client-side preview, XMLHttpRequest for upload progress events, chunked upload logic for files exceeding your server's body size limit, concurrent upload queue with configurable concurrency limit, per-file progress tracking and status display, server response handling for file validation errors, and backend endpoint integration. Compatible with any backend framework and cloud storage service (S3, GCS, or Azure Blob).
This service suits web applications requiring file upload functionality — image galleries, document management systems, profile photo upload, media libraries, or any form requiring file attachment — who need the upload experience to be smooth, reliable, and fully featured.
The implementation covers the file input UI (styled drag-and-drop zone and button), FileReader API for client-side preview, XMLHttpRequest for upload progress events, chunked upload logic for files exceeding your server's body size limit, concurrent upload queue with configurable concurrency limit, per-file progress tracking and status display, server response handling for file validation errors, and backend endpoint integration. Compatible with any backend framework and cloud storage service (S3, GCS, or Azure Blob).
This service suits web applications requiring file upload functionality — image galleries, document management systems, profile photo upload, media libraries, or any form requiring file attachment — who need the upload experience to be smooth, reliable, and fully featured.
What the Freelancer needs to start the work
Please share your existing form or upload interface, your backend framework and file storage destination (local, S3, GCS, etc.), your file type and size limits, your maximum file size (to determine if chunking is required), and any specific UI requirements for the upload zone and file list display.