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SnapOtter/apps/docs/tools/pdf/merge-pdf.md
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SnapOtter 8532f3227b docs: audit all 157 tool pages against live schemas
Reconcile every tool page's parameters, defaults, and response shape against the tool's Zod settings schema and executionHint in code. Notable fixes: color-palette (add count + format params, hex output, median-cut algorithm), favicon (add 5 params, was documented as having none), qr-generate (add logoDataUri), convert (add ppm/eps/tga formats), video-loudnorm (-16 LUFS not -14), smart-crop (async 202 not sync 200), images-to-video (1080x1080 square), and several output-filename and behavior-note corrections.

Also normalize API endpoint paths to /api/v1/tools/<id> (no modality segment) and standardize curl examples on the Docker API port 1349. Verified with a clean docs build.
2026-06-18 14:12:28 +08:00

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Markdown

---
description: Combine multiple PDFs into a single document.
---
# Merge PDFs
Combine two or more PDF files into a single document, preserving the page order of each input file.
## API Endpoint
`POST /api/v1/tools/merge-pdf`
Accepts multipart form data with two or more PDF files. No `settings` field is required.
## Parameters
This tool has no settings parameters. Simply upload two or more PDF files.
| Constraint | Value |
|------------|-------|
| Minimum files | 2 |
| Maximum files | 20 |
## Example Request
```bash
curl -X POST http://localhost:1349/api/v1/tools/merge-pdf \
-H "Authorization: Bearer si_your-api-key" \
-F "file=@document1.pdf" \
-F "file=@document2.pdf" \
-F "file=@document3.pdf"
```
## Example Response
```json
{
"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/merged.pdf",
"originalSize": 4500000,
"processedSize": 4200000
}
```
## Notes
- Files are merged in the order they are uploaded.
- At least two PDF files are required; the request will fail with a 400 error if fewer are provided.
- The maximum number of input files is 20.
- Encrypted PDFs must be unlocked before merging.