What's the best file storage for Next.js? A practical guide to Next.js file uploads (2026)

Next.js Server Actions and serverless functions impose request-size limits that make routing large uploads through an application server impractical and potentially costly, so direct browser-to-storage uploads using short-lived server-authorized permissions are presented as the preferred approach. Upstash Blob, an S3-compatible service, is positioned as a default option for Next.js App Router applications because its server handler and typed React hook support direct uploads, multipart transfers, resumability, retries, progress reporting, validation, and public or expiring private file access while avoiding function payload limits. Its pricing includes free uploads, 1 TB of monthly download bandwidth, and relatively low storage and subsequent download rates, although Cloudflare R2 can be less expensive for applications serving many terabytes of data because it has no egress charges. The setup involves creating a bucket and token, defining server-side upload constraints and callbacks, exposing them through a route, connecting a typed client hook, and storing upload results idempotently to account for callback retries. Other services may be preferable for specific requirements, including Cloudinary for image or video transformations, UploadThing for predictable flat-rate billing and ready-made UI, Supabase Storage for Supabase-based applications, and AWS S3 with CloudFront for organizations already operating within AWS.

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