Rate Limits
To prevent abuse and ensure the stability of our service, we implement API rate limits that vary based on your subscription plan. These limits help balance server load and enforce a fair usage policy for all users.
Request Rate Limit
✅ Your maximum number of API requests within a given time window is determined by your plan.
✅ Each request is counted against your plan's limit on a sliding window basis. As you make requests, the usage is tracked in real time. When you reach your allocated maximum within that period, further requests will be temporarily blocked until your usage drops below the limit.
✅ These limits are returned in the response headers for real-time monitoring. For more details, please refer to the Limits in Response Headers section.
Concurrent Request Limit
☑️ The number of API requests processed at the same time is restricted according to your subscription plan.
☑️ This limit controls the number of concurrent API requests that can be accepted and processed simultaneously by the server.
☑️ It helps manage server load and prevents too many simultaneous operations.
Asynchronous Endpoint
For the asynchronous endpoint, this limit applies to the number of conversion requests being accepted concurrently, but the actual conversions may be processed in parallel across multiple machines once accepted.
Limits in Response Headers
Rate limit details are returned in the headers of every API response to help you monitor your usage in real time.
The following headers are included:
| Header Name | Description |
|---|---|
x-pdfbolt-ratelimit-limit-day | Total allowed requests per day. |
x-pdfbolt-ratelimit-limit-hour | Total allowed requests per hour. |
x-pdfbolt-ratelimit-limit-minute | Total allowed requests per minute. |
x-pdfbolt-ratelimit-remaining-day | Remaining allowed requests in the current day. |
x-pdfbolt-ratelimit-remaining-hour | Remaining allowed requests in the current hour. |
x-pdfbolt-ratelimit-remaining-minute | Remaining allowed requests in the current minute. |
Need Higher Limits?
If you need to increase these limits to support your application's requirements, please contact us. We are happy to discuss and adjust the limits accordingly to your needs.