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IP Addresses

PDFBolt uses static IP addresses for outbound requests made during PDF conversions. If your source URLs, webhook endpoints, or S3 buckets restrict access by source IP, add these IPs to your allowlist.

Outbound IP Addresses​

IP AddressRegion
49.13.36.211EU (Germany)
5.75.219.91EU (Germany)

Outbound requests made during conversions can originate from either of these addresses, including:

  • URL fetching – when you pass a url parameter, PDFBolt fetches the page from one of these IPs.
  • Webhook delivery – async conversion results are sent to your webhook from these IPs.
  • S3 uploads – when using customS3PresignedUrl, the upload comes from these IPs.

When Do I Need to Allowlist?​

Add these IPs to your firewall if:

  • Your source URLs are hosted on public or staging servers that restrict access by source IP.
  • Your webhook receiver only accepts requests from known IPs.
  • Your bucket or storage provider restricts uploads by source IP.

If your source URLs, webhook endpoint, and storage provider are publicly reachable without IP restrictions, no allowlisting is needed.

Webhook Security

For webhook security, also verify the x-pdfbolt-signature header. IP allowlisting is an additional network control, not a replacement for signature verification.

Stability​

These IP addresses are static. If they change, we will update this page and notify affected users in advance whenever possible.