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ERR_MATHPIX_TIMEOUT — Mathpix Timeout

HTTP Status: 504 Retryable: Yes Automatic retry: None at the Mathpix level. The poll loop expires after 5 minutes or after 5 consecutive error responses from the status endpoint.

What the User Sees

Math processing timed out. (ERR_MATHPIX_TIMEOUT)

What Causes This Error

Mathpix accepted the PDF for processing but did not complete within the 5-minute timeout window. The waitForCompletion function polls the Mathpix status endpoint and gives up after either 5 minutes of wall time or 5 consecutive error responses from the status endpoint.

Documents with complex mathematical equations, many pages of formulas, or dense scientific notation take longer to process. Mathpix performs equation recognition and LaTeX conversion on each detected formula, which is computationally intensive.

The timeout can also be triggered if Mathpix’s processing queue is backed up, causing the document to sit in queue rather than actively processing.

Resolution Steps

For Users

  1. Try again — the processing queue may have cleared.
  2. Use page ranges to convert smaller sections of math-heavy documents at a time.
  3. Try the “standard” quality tier, which uses vision models instead of Mathpix. While math rendering may be slightly less precise, it avoids the Mathpix dependency entirely.
  4. If the document has isolated math sections, convert those pages separately with the math-optimized tier and the rest with the standard tier.

For Administrators

  1. Monitor Mathpix processing times. The waitForCompletion function logs: Mathpix processing timed out after Ns for PDF {id}.
  2. Check the Mathpix dashboard for processing queue health and average completion times.
  3. If timeouts are frequent, consider increasing the poll timeout for Mathpix specifically.
  4. Review which documents trigger timeouts — if they share common characteristics (page count, equation density), consider adding pre-flight checks to warn users before conversion starts.
  5. Track timeout frequency in Grafana to identify trends and seasonal patterns.