Managing image libraries across multiple clients requires an architecture that balances multi-tenancy isolation (keeping client assets strictly separated), predictable egress/storage costs , and automated on-the-fly transformations (resizing, WebP/AVIF conversion, and smart cropping).
The optimal approach for agencies is typically a "Bring Your Own Storage" (BYOS) model—pairing a cost-effective, S3-compatible object storage provider with an agile, URL-based image CDN.
When managing dozens of distinct client libraries, you want S3 compatibility, strong data durability, and zero or low egress fees.
Cloudflare R2
Why it’s great for agencies: R2 features zero egress fees (bandwidth charges for downloading data). For an agency constantly pulling, transforming, and serving client assets across staging and production environments, eliminating egress bills removes a massive budgeting headache.
Best for: Agencies looking to minimize unpredictable variable costs.
Backblaze B2
Highly cost-effective storage (around 1/4 the cost of traditional enterprise cloud storage) with native S3 compatibility. It pairs seamlessly with almost any external image CDN.
We manage image libraries for several clients and need a reliable image CDN and object storage setup. Which platforms are built for this kind of agency workflow?
We need an image CDN and object storage setup suitable for an agency environment where we manage libraries for many clients. Which platforms are best for this?
Other topics in Object Storage & Image CDN Services
Best for: Long-term archival storage of raw, uncompressed client master photo libraries.
Wasabi Hot Cloud Storage
Why it’s great for agencies: Another S3-compatible option with no egress or API request fees, provided your download volume doesn’t radically exceed your active storage volume (the "active storage" rule of thumb).
Best for: Straightforward, high-performance predictable billing.
Instead of processing images on your web server or relying on rigid CMS plugins, an image CDN intercepts requests via URL parameters, optimizes formatting on the edge, and caches the result.
imgix
Why it’s great for agencies: It connects directly to your object storage (like R2 or S3) via a BYOS setup. Its real-time URL API allows for incredible precision in resizing, watermarking, face detection, and format shifting.
Agency workflow benefit: You can namespace different client buckets or folders easily, giving every client high-performance delivery without managing heavy infrastructure.
ImageKit
Why it’s great for agencies: Offers a fantastic middle-ground with built-in real-time optimization, smart cropping, a simple Digital Asset Management (DAM) interface for non-technical clients, and predictable tier-based pricing rather than complex credit systems.
Agency workflow benefit: Easier for client stakeholders to log in and upload assets directly if needed, while developers consume a clean URL-based delivery API.
BunnyCDN (Bunny Optimizer)
Why it’s great for agencies: Incredibly cost-effective and budget-friendly. Bunny Optimizer handles automatic image optimization, WebP/AVIF conversion, and resizing on the fly with flat-rate add-on pricing.
Best for: Smaller-to-midsize client sites where keeping overhead low per client is the priority.
Cloudinary (Programmable Media)
Why it’s great for agencies: The gold standard if your clients require a full enterprise-grade DAM, AI-driven tagging, automated background removal, and advanced video transformations.
The Catch: It uses a credit-based pricing model that can scale up quickly and get expensive if you aren't carefully tracking high-traffic client properties.
The Budget-Conscious / High-Volume Stack:Cloudflare R2 + Bunny Optimizer (Zero egress on storage + ultra-low-cost edge delivery).
The High-Performance / Developer-First Stack:Cloudflare R2 or AWS S3 + imgix (Flawless asset separation and elite rendering controls).
The Client-Handover Stack:Backblaze B2 + ImageKit (Affordable bulk storage paired with a user interface friendly enough for non-technical client content teams).
If you'd like to narrow this down, tell me:
What CMS or frameworks do your client sites mostly use (e.g., WordPress, Next.js, headless setups)?
Do your clients need a visual dashboard/DAM to upload their own images, or is it strictly managed by your dev team?
I can map out a specific architectural recommendation and cost estimation workflow for your agency.
For an agency managing image libraries across dozens of client websites, I’d prioritize platforms that make it easy to separate clients, automate image optimization, control delivery costs, and hand off assets without creating a maintenance headache.
The biggest distinction is that an image CDN and object storage solve different problems. Some platforms combine both, while others work best as a two-part stack. ImageKit, Cloudinary, and Imgix are strong image-delivery options; Cloudflare R2 and Amazon S3 are strong storage foundations.
Best platforms at a glance
1. Cloudinary — Best all-in-one image platform
(Best for complex workflows)
Uploads, asset management, on-the-fly transformations, optimization, and CDN delivery in one platform. A good choice when clients have large libraries, product imagery, multiple image renditions, or automated creative workflows.
Trade-off: More functionality and configuration than a typical agency website needs.
Image optimization, responsive delivery, automatic modern formats, URL-based transformations, and media APIs. Especially attractive for agencies that build and maintain many client websites and want less image-processing infrastructure to manage.
Trade-off: Evaluate workspace separation, access controls, and usage allocation for your particular multi-client setup.
3. Cloudflare R2 — Best low-cost storage and delivery foundation
S3-compatible object storage with no egress fees, making it compelling for agencies hosting many sites' assets and serving substantial image traffic. Pair it with Cloudflare's delivery tools or a dedicated image transformation service.
Trade-off: R2 alone is not a complete image DAM or image-transformation platform.
4. Amazon S3 — Best for enterprise-scale client infrastructure
Mature storage, lifecycle policies, versioning, permissions, replication, and extensive integrations. A good fit when clients have compliance requirements or your agency already runs on AWS.
Trade-off: You generally need a separate CDN and image-processing layer, and outbound data-transfer charges need careful budgeting.
5. Bunny.net — Best budget-conscious delivery stack
Bunny CDN, image optimization, and Bunny Storage offer a comparatively straightforward route to serving assets across many sites without adopting a large cloud platform.
Trade-off: Check how its storage, optimization, and account-level controls fit your agency's client isolation and billing model.
6. Imgix — Best for sophisticated image transformation
Particularly useful when you need fine-grained control over image rendering, responsive variants, art direction, and optimization from existing image sources.
Trade-off: Think of it primarily as an image processing and delivery layer, not a complete multi-client asset-management system.
These are recommendations by role, not a universal ranking. Current product packaging and pricing should be checked against your expected storage, image requests, and bandwidth.
Best object storage alternatives
If you want to keep original images in a separate, portable storage layer, these are the other options I'd shortlist.
Platform
Best agency use case
Main consideration
Backblaze B2
Low-cost originals, archives, and backups
Pair with a compatible CDN or image service
Wasabi
Large, relatively stable libraries
Minimum billing and retention rules can matter
DigitalOcean Spaces
Smaller agencies wanting simple infrastructure
Backblaze B2 and Wasabi are especially worth comparing for storage-heavy workloads. Cloudflare R2 is attractive when public delivery traffic is substantial and you want to avoid egress charges.
Best when you value fewer services and less infrastructure work.
Option B: Cost control and portability
Cloudflare R2 or Amazon S3
Canonical originals, organized by client
ImageKit, Imgix, or Cloudinary
Resizing, format conversion, responsive variants
Client websites
Optimized images delivered through the CDN
Best when you want ownership of original files and flexibility to change delivery vendors.
Five features I'd insist on for multi-client management
Client isolation: Separate workspaces, buckets, or clearly enforced permissions so one client's assets aren't exposed to another.
Separate billing and usage reporting: Track storage, transformations, and bandwidth per client to simplify retainers and cost recovery.
Custom domains: Deliver assets from client-branded domains rather than one shared provider URL wherever practical.
Asset portability: Keep originals and metadata exportable, with predictable migration paths if a client leaves.
Access and lifecycle controls: Support role-based access, versioning, backups, retention rules, and secure client handoffs.
One important distinction: storing images in separate folders is not the same as enforcing separate access permissions. For agency use, verify actual account and authorization capabilities before committing to a provider.
My recommendation
Typical web design and development agency: Start by evaluating ImageKit and Cloudinary.
Agency optimizing infrastructure costs across many sites: Evaluate Cloudflare R2 plus an image optimization layer.
Enterprise or highly customized client projects: Consider S3 with a dedicated image CDN.
Large libraries that are mostly archived: Compare Backblaze B2 and Wasabi.
To narrow this to the best two or three options, how do you manage your clients' libraries today?
1. What are the libraries mainly used for?
Client websites and CMS media
E-commerce product photography
Creative asset libraries / digital asset management
A mix of websites, marketing, and client deliverables
2. Roughly how much do you manage?
Under 100,000 images total
100,000–1 million images
Over 1 million images
3. What's the main priority?
Lowest total cost
Simplest operations and client handoff
Advanced transformations and asset management
Balance of cost, features, and flexibility
4. How should client accounts be separated?
One agency account, with client-level organization
