Strapi vs Sanity for Media-Heavy Sites: What We Learned from Real Projects
A head-to-head comparison of Strapi and Sanity from Mintec's direct project experience with media-heavy sites: AI-generated images, multi-resolution video, and large asset libraries. Decision framework, real cost data, and when to choose each.
Strapi vs Sanity for Media-Heavy Sites: What We Learned from Real Projects
If your site handles AI-generated images, multi-resolution video, or thousands of media assets, choosing between Strapi and Sanity isn't a generic CMS decision — it's an architecture choice that defines your content pipeline for years. At Mintec we've deployed both platforms on projects with intensive media requirements, and the honest answer isn't "one is better." It's "each solves a different problem profile."
This isn't another feature checklist comparison. It's what we've learned after using Strapi on projects where the client needed total control over asset storage, and Sanity on projects where a frictionless image pipeline was the top priority.
Why Media-Heavy Sites Are a Different Beast
Most CMS comparisons assume a text-heavy content profile: blog articles, product pages, documentation. Any modern headless CMS handles those fine. The trouble starts when media assets dominate the equation.
A media-heavy site has three characteristics that change everything:
- Volume: libraries with thousands of images, videos, and audio files. Each asset weighs between 200 KB and 50 MB.
- Variability: AI-generated assets come in inconsistent sizes. One image might be 512×512, the next 2048×1536. A video could be 5 seconds or 5 minutes.
- Transformations: you need to resize, crop, and convert formats (AVIF, WebP, H.264, HEVC) depending on the device and connection.
At this point, the CMS stops being a content repository and becomes the orchestrator of your media pipeline. That's where Strapi and Sanity diverge sharply.
Strapi: Full Control, You Own the Infrastructure
We've used Strapi across several media-rich projects, including implementations documented in our guide on video-first content architecture in headless CMS. Strapi excels when the client needs:
Self-hosting and compliance. If media assets can't leave a specific region due to regulations (GDPR, LGPD, HIPAA), Strapi lets you plug in your own storage provider (S3, GCS, MinIO) and keep everything in-house. No shared data lakes, no surprise data transfers.
Predictable costs. Strapi is open source. Your cost is your infrastructure. For projects with tens of thousands of assets, this can be dramatically cheaper than SaaS platforms that charge per stored asset. In a recent e-learning client project, we went from €800/month on a SaaS CMS to ~€180/month on Strapi + Cloudflare R2, with no performance trade-off.
Plugins and extensibility. The Strapi community has plugins for on-the-fly image generation, Cloudflare Images integration, and FFmpeg-based video transforms. If you need something specific, you can build it.
Where Strapi hurts: the Media Library. Beyond ~10,000 assets, admin panel performance degrades noticeably. The SELECT COUNT(*) query on the files table slows down without custom indexes. Strapi issue #22711 documents exactly this problem with libraries over 500,000 images. The fix exists (custom indexes, pagination, external CDN) but requires engineering time.
Sanity: Managed Media Pipeline, Zero Infrastructure Friction
Sanity takes the opposite approach: the asset pipeline is baked into the product, not something you build yourself. On projects where we paired Sanity with Astro for content-driven sites, the media infrastructure savings were immediate.
What makes Sanity exceptional for media-heavy sites:
Image pipeline at the CDN edge. Sanity transforms images on the fly. Append ?w=800&fm=webp&q=80 to any asset URL and you get exactly what you need, served from a global CDN. No separate image transformation service. No post-processing jobs. It just works.
Content Lake and GROQ. Sanity's document-based data model handles complex content structures without migrations. For projects where every media asset carries extensive metadata (description, alt text, tags, content relationships), GROQ lets you write expressive queries that would be cumbersome in SQL.
Real-time collaboration. Multiple editors can work simultaneously in Sanity Studio without lock conflicts. For teams managing large asset volumes with approval workflows, this is transformative.
Where Sanity hurts: costs can escalate quickly. Sanity charges by document, asset bandwidth, and CDN requests. A project with hundreds of thousands of assets and high traffic can hit $500-$2,000/month. And vendor lock-in is real — migrating off Sanity means rebuilding the image pipeline they gave you for free.
Side-by-Side: Media-Heavy Use Cases
| Dimension | Strapi | Sanity |
|---|---|---|
| Storage | Self-managed (S3, R2, GCS) | Managed (Content Lake + CDN) |
| Image transforms | Requires plugin or external service (Cloudflare Images, imgix) | Built-in, on-the-fly at CDN edge |
| Video pipeline | Manual (FFmpeg, Mux, Cloudflare Stream) | Manual (no native support) |
| Performance at 10K+ assets | Needs optimization (custom indexes, CDN) | Native (scales without config) |
| Monthly cost (media-heavy) | $20-200 (your infrastructure) | $200-2,000 (SaaS + CDN) |
| Data control | Total (you choose region and provider) | Limited (provider's regions) |
| Editor experience (media) | Functional, slow with large libraries | Fluid, with integrated asset browser |
| Lock-in risk | Low (SQL, exportable) | Medium-high (GROQ, Content Lake) |
| Community & plugins | Extensive (4,400+ plugins) | Smaller but with MCP ecosystem |
Our Decision Framework for Media Projects
At Mintec, we use this criteria to recommend one over the other:
Choose Strapi when:
- Your project has regulatory requirements about where assets are stored
- Budget is tight and you can invest development time in infrastructure
- You need specific integrations with legacy systems or storage providers
- Your team has the DevOps capacity to maintain and scale infrastructure
Choose Sanity when:
- Your media asset volume is high (thousands of new images per week)
- You need on-the-fly image transformations without managing extra infrastructure
- Your editorial team requires real-time collaborative editing
- SaaS cost fits the budget and you prioritize velocity over control
For hybrid projects — where editorial content lives in Sanity but AI-generated assets need massive storage — we've seen teams use both: Sanity for the content model and Strapi (or a direct S3 bucket) as the media provider. Not the cleanest architecture, but it works.
What the Numbers Actually Say
In a recent headless migration project, we benchmarked both platforms with the same workload: 15,000 images, 200 videos, ~500K page views/month:
- Strapi + Cloudflare R2 + Cloudflare Images: $185/month in infrastructure, 3 weeks of development to set up the image transformation pipeline.
- Sanity: ~$520/month estimated (Growth plan + asset add-ons), zero development time on the image pipeline, direct integration with Astro via @astrojs/sanity.
The $335/month gap isn't trivial, but for this client, the saved engineering time was worth more. They went with Sanity.
In another project, a health-tech client couldn't use Sanity due to data residency requirements. Strapi + S3 in Frankfurt was the only viable option from day one.
The Bottom Line
There's no universal winner between Strapi and Sanity for media-heavy sites. The right choice depends on three variables: your infrastructure budget, your DevOps capacity, and your data control requirements.
For a deeper look at how we structure media content in headless CMS, check our guides on performance budgets for synthetic media sites and when NOT to use a headless CMS. Both articles complement this discussion with real project data.
The good news: both Strapi and Sanity are mature platforms in 2026. Whichever you pick, you'll have a modern, capable CMS. The bad news: choosing wrong for your media profile can cost months of corrective work. Think about your asset pipeline first, and the CMS second.
Frequently Asked Questions
Which is better for media-heavy sites, Strapi or Sanity?
It depends on your project profile. Strapi wins when you need full control over storage, tight budgets, or compliance requirements that mandate self-hosting. Sanity wins when you handle large volumes of images requiring on-the-fly transformations, need real-time collaborative editing, or want a managed asset pipeline without infrastructure overhead.
Does Strapi handle large media libraries well?
Strapi can handle large libraries, but performance degrades beyond ~10,000 assets without custom optimizations like indexing and an external CDN. The Media Library is functional but not designed for high performance at scale — expect to invest in infrastructure.
Does Sanity have limits on its image pipeline?
Sanity's image pipeline offers on-the-fly transforms at the CDN edge with no practical limits for most projects. The real constraint is GROQ query complexity on large document sets. For media-heavy sites, the asset pipeline is excellent, but the data model needs careful design to avoid expensive queries.
