This error indicates that you've exceeded the number of API requests allowed by your current subscription plan within a specific time frame.
Why This Happens
PDF.co enforces rate limits based on your plan:
Free Plan: 2 requests per second
Paid Plans: 10 requests per second
If you exceed these limits, you'll receive a 429 error.
What You Can Do
Implement Delays Between Requests: Introduce short pauses (e.g., 1–2 seconds) between API calls to stay within your rate limit.
Utilize Asynchronous Processing: For large files, use asynchronous mode to process tasks in the background, reducing the likelihood of hitting rate limits. Learn more about async mode →