name: PDFShift Rate Limits description: Rate limiting details for the PDFShift HTML-to-PDF conversion API. Limits are communicated via response headers and vary by plan and server load. url: https://docs.pdfshift.io/ headers: - name: X-RateLimit-Limit description: Maximum number of requests allowed within the current rate-limit window. - name: X-RateLimit-Remaining description: Number of requests remaining in the current rate-limit window. - name: X-RateLimit-Reset description: Unix timestamp indicating when the current rate-limit window resets. statusCodes: - code: 429 description: Too Many Requests — the client has exceeded the allowed rate limit. Retry after the X-RateLimit-Reset timestamp. notes: - Rate limits apply per API key. - Sandbox conversions (watermarked, using the sandbox parameter) do not consume credits but may still be subject to rate limits. - Asynchronous requests via webhooks can help manage throughput for high-volume workloads. - Concurrent conversion limits vary by plan; contact support for Enterprise-level concurrency details.