MetaLink vs LinkPreview — Monthly Caps vs Hourly Rate Limits

MetaLink and LinkPreview both serve the same core function: accept a URL, return Open Graph metadata. The main differences are pricing model, API design, and how they handle rate limits. If you're evaluating link preview APIs, here's a direct comparison.

How does MetaLink compare to LinkPreview?

MetaLink uses predictable monthly request caps with per-minute rate limiting. You know exactly how many requests you have each month. The free tier is 1,000 requests/month; paid plans start at $9/month.

LinkPreview uses hourly rate limits rather than monthly caps. The free tier allows 60 requests/hour with no monthly ceiling. Paid plans increase the hourly cap. This model works differently for different usage patterns.

Quick Comparison Table

Key Differences

1. Rate Limit Model: Monthly vs Hourly

This is the most important distinction. LinkPreview's free tier allows 60 requests/hour — theoretically up to ~43,200 requests/month if traffic is perfectly distributed. In practice, traffic is bursty: if your app sends 300 requests in 10 minutes, you'll hit the hourly cap immediately.

MetaLink's free tier gives you 1,000 requests/month with a per-minute burst allowance of 100 req/min. This is more predictable for applications with irregular, bursty traffic patterns (user-triggered link previews, batch import jobs).

2. Entry Paid Plan Value

LinkPreview's Basic plan is $8/month for 200 requests/hour. At 24 hours/day, 30 days/month, that's a theoretical maximum of ~144,000 requests/month — but only if traffic is perfectly even.

MetaLink's Starter plan is $9/month for 10,000 requests/month with no hourly constraints. For most applications, the predictable monthly cap is easier to reason about than an hourly limit.

3. Structured Response Format

MetaLink returns a structured response with explicit Open Graph and Twitter Card fields separated into objects:

{
  "url": "https://vercel.com",
  "title": "Vercel: Build and deploy the best web experiences with the Frontend Cloud",
  "description": "Vercel's Frontend Cloud gives developers the frameworks, workflows, and infrastructure to build a faster, more personalized web.",
  "favicon": "https://vercel.com/favicon.ico",
  "og": {
    "title": "Vercel: Build and deploy the best web experiences",
    "description": "Vercel's Frontend Cloud...",
    "image": "https://assets.vercel.com/image/upload/...",
    "url": "https://vercel.com"
  },
  "twitter": {
    "card": "summary_large_image",
    "title": null,
    "description": null,
    "image": null
  }
}

This structured format makes it easy to access specific fields (og.image, twitter.card) without parsing a flat response.

4. Tech Stack and Speed

MetaLink is built in Rust with Axum, which minimizes per-request overhead. For metadata-only extraction (no browser rendering), Rust's low latency is measurable in high-throughput scenarios.

LinkPreview's tech stack is not publicly documented.

5. No Overage Charges (Both)

Neither MetaLink nor LinkPreview charges overages — both use hard caps. MetaLink caps at the monthly limit; LinkPreview caps at the hourly limit. Neither will surprise you with unexpected charges. This is a meaningful advantage over OpenGraph.io, which does charge for overages.

When to Choose LinkPreview

LinkPreview is the better choice if:

• Your traffic is consistently low and evenly distributed — 60 req/hour is plenty and the free tier costs nothing.
• You prefer an hourly cap over a monthly cap (your use case has daily traffic but not monthly accumulation concerns).
• The $8/month Basic plan fits your budget and hourly rate (200 req/hr) matches your peak load.
• You don't need structured Twitter Card data separately from Open Graph data.

Use MetaLink if you have bursty traffic (user-triggered previews), need a monthly cap model for billing predictability, want structured Open Graph + Twitter Card data as separate objects, or your free tier usage exceeds 60 requests in a single busy hour.

Which link preview API is better for production apps?

For production applications where you need predictable, debuggable rate limit behavior, MetaLink's monthly cap model is easier to plan around. You know you have 10,000 requests this month — you don't have to worry about what happens if 300 users paste URLs simultaneously at 11am.

For very low-traffic applications (a few dozen requests per hour at most), LinkPreview's free tier or $8/month Basic plan is cost-effective.

MetaLink vs LinkPreview: Pricing Summary

At lower volumes the pricing is similar. MetaLink is cheaper at the 200K/month tier.

Try MetaLink Free

1,000 free requests/month. No credit card required. Get a response in under 2 minutes.

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