/v1/merge-pdf

Merge multiple PDF files into a single document.

Tool Usage Notes

Accepts one or multiple PDF URLs.
Output is always a single merged PDF file (not ZIP).
Use profile to tune output quality: standard, web, or print.

Estimate Before Processing

Use the estimate endpoint to preview token cost and validate your input URLs before starting conversion.

curl -X POST https://filemazing.com/v1/merge-pdf/estimate \
  -H "Authorization: Bearer fm_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "inputs": ["https://example.com/file"],
    "response_type": "json"
  }'

{
  "ok": true,
  "tool": "merge-pdf",
  "mode": "estimate",
  "estimated_tokens": 1,
  "available_tokens": 10,
  "enough_tokens": true,
  "shortfall_tokens": 0
}

Example Request

Send two or more PDF files and merge profile.

curl -X POST https://filemazing.com/api/v1/merge-pdf \
  -H "Authorization: Bearer fm_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "inputs": ["https://example.com/a.pdf", "https://example.com/b.pdf"],
    "profile": "standard",
    "response_type": "json"
  }'

Request Parameters Breakdown

Parameter	Required	Type	Options	Default	Example
inputs	Yes	array<string>	HTTP/HTTPS URL(s) to PDF files	`none (required)`	`["https://example.com/a.pdf","https://example.com/b.pdf"]`
Provide one or more PDF URLs.
profile	Yes	string	`standard, web, print`	`none (required)`	`standard`
Controls merge output quality profile.
response_type	No	string	`json, xml, text`	`json`	`json`
Controls API response payload format.
promo_code	No	string	Any active promo code	`empty`	`SPRING25`
Optional; applies discount rules when valid.

Example Response

Merged document is returned through a download URL.

{
  "ok": true,
  "tool": "merge-pdf",
  "mode": "sync",
  "status": "completed",
  "download_url": "https://filemazing.com/tool/merge-pdf/jobs/.../download",
  "estimated_tokens": 2,
  "final_tokens": 2
}

Response Fields Breakdown

Field	Type	Always Returned	Example
ok	boolean	Yes	`true`
Indicates success/failure.
tool	string	Yes	`merge-pdf`
Tool identifier.
mode	string	Yes	`sync`
Current execution mode.
status	string	Yes	`completed`
Processing state.
download_url	string	Yes	`https://filemazing.com/tool/merge-pdf/jobs/.../download`
Direct merged PDF download URL.
estimated_tokens	integer	Yes	`2`
Estimated reserved tokens.
final_tokens	integer	Yes	`2`
Final charged tokens.