How to Support Folder Uploads in the Browser

A practical guide to file upload retries, idempotency keys, hashes, resumable sessions, and the metrics to track to avoid duplicates.

A practical guide to upload progress bars that stay accurate through stalls, retries, processing delays, and multi-file edge cases.

A practical workflow for web image uploads, covering format choice, compression, resizing, metadata, and maintenance.

Learn how to validate uploaded files in the browser for size, type, image dimensions, and basic integrity before sending them.

A reusable checklist for choosing between direct-to-cloud, proxy, and hybrid upload architectures as your product and infrastructure evolve.

A practical guide to presigned URL upload security, expiration choices, and the implementation mistakes teams should catch early.

A reusable checklist for benchmarking file upload performance across networks, browsers, file sizes, chunking, retries, and preprocessing.

A practical guide to choosing single request, chunked, or multipart uploads based on file size, reliability, infrastructure, and cost.