Understanding Web Rendering Architectures
When it comes to optimizing a site for SEO, two main approaches are available: pre-rendering and Server-Side Rendering (SSR). Each has its advantages and disadvantages, and the choice depends on your specific context.
The Basic Problem: Single Page Applications (SPA)
Modern no-code tools (Webflow, Bubble, Framer) generate Single Page Applications. These sites work on a simple principle:
1. The server sends an almost empty HTML page
2. JavaScript loads and builds the content client-side
3. The user sees the complete site
For humans, it's transparent. For search engine robots, it's problematic because they may not execute JavaScript correctly.
Pre-rendering: The Static Approach
How It Works
Pre-rendering generates static HTML versions of your pages **in advance**. These pages are stored and served instantly to visitors and robots.
Technical process:
1. A headless browser (Chrome without interface) visits your page
2. It waits for JavaScript to generate all content
3. The final HTML is captured and stored
4. This static HTML is served to search engine robots
Advantages of Pre-rendering
Exceptional performance
Simplicity of implementation
Reduced cost
Reliability
Disadvantages of Pre-rendering
Slightly delayed content
Cache management
Server-Side Rendering (SSR): The Dynamic Approach
How It Works
SSR generates the HTML of each page **on demand**, with each request. A server executes JavaScript and returns the complete HTML to the browser.
Technical process:
1. Request received by server
2. JavaScript executes server-side
3. Complete HTML is generated
4. Page sent to browser/robot
Advantages of SSR
Always up-to-date content
Native SEO
Disadvantages of SSR
Variable performance
Infrastructure cost
Technical complexity
Detailed Comparison
| Criterion | Pre-rendering | SSR |
|-----------|---------------|-----|
| Response time | < 50ms | 100-500ms |
| Infrastructure cost | Very low | High |
| Content freshness | Cache (minutes/hours) | Real-time |
| Setup complexity | Minimal | Significant |
| No-code compatibility | 100% | Limited |
| Personalization | Limited | Complete |
| Scalability | Excellent (CDN) | Requires scaling |
Recommended Use Cases
Choose pre-rendering if:
Choose SSR if:
Our Recommendation
For **90% of no-code sites**, **pre-rendering is the best option**. It offers the best balance between performance, cost, and ease of implementation. This is exactly what Rank Deploy offers.
SSR becomes relevant only for complex web applications with technical teams capable of managing the associated infrastructure and code. For a showcase site, blog, or even a standard e-commerce, pre-rendering is more than sufficient and much more efficient.
FAQ on Pre-rendering vs SSR
Can both approaches be combined?
Yes, this is called the hybrid approach or ISR (Incremental Static Regeneration). Some static pages use pre-rendering (marketing pages, blog), while other dynamic ones use SSR (user dashboard, cart). Next.js natively supports this approach, but it adds technical complexity.
Does pre-rendering work with forms and interactions?
Absolutely! Forms, buttons, animations, and all JavaScript interactions work normally for your users. Pre-rendering only concerns search engine robots that receive a static HTML version for indexing. Your human visitors continue to use the full JavaScript version.
What is the recommended update frequency for cache?
It depends on the nature of your content:
Rank Deploy automatically detects changes and regenerates the concerned pages.