PDF Merge combines multiple PDF files into a single PDF. Send at least two files in the files array, and you get one merged PDF back as binary output.
Use it when you need to turn separate reports, invoices, scans, or contract pages into one document for storage, sharing, or downstream processing. The endpoint accepts PDF files as repeated binary file uploads in the request body, with a total size limit of 60 MB.
PDF Merge is a fit for document workflows where order matters. You can merge batches of statements into a monthly packet, combine application attachments into a single submission, or join scanned pages before archiving. The response is a downloadable PDF file, so it slots cleanly into file pipelines without extra parsing.
If your app already accepts uploaded PDFs, this endpoint gives you a simple way to assemble them into one file without handling PDF internals yourself.
Merge at least two PDF files into one by uploading them as multipart form files.
curl -X POST "https://api.eu.apyhub.com/freedailypro/merge-multiple-pdf-files-into-one-pdf/merge" \
-H "apy-token: $APY_TOKEN" \
-F "files=@/path/to/file1.pdf" \
-F "files=@/path/to/file2.pdf"Returns a binary file (string with format: binary) containing the merged PDF.
Loading your default key…Merges multiple PDF files into a single PDF and returns the merged PDF as binary output.
| Parameter | Type | Mandatory | Description |
|---|---|---|---|
| files | String Array | Yes | At least two PDF files. Repeat the field for multiple files. Total upload size must be 60 MB or less. |
Returns the merged PDF as binary data. The success response is a single binary file, with no JSON wrapper or top-level fields.
Max 100MB total per request (all files combined). Larger? Use this API's URL-based endpoint instead, if it has one.
bad_requestRequired parameter missing or malformed body.
unauthorizedAPI key missing, revoked, or not authorized for this service.
rate_limitedYour plan's per-second rate exceeded. Retry with exponential backoff.
upstream_busyBackend temporarily unavailable. Try again in a few seconds.
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