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SnapOtter/apps/docs/tools/pdf/unlock-pdf.md
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SnapOtter d24e244af4 docs: organize tool pages by modality under /tools/<modality>/
Move all 157 tool pages into image/video/audio/pdf/data subfolders so URLs read /tools/<modality>/<id> (e.g. /tools/image/crop). Nest the image sub-categories under an Image group in the sidebar so the nav reads by modality. Add public/_redirects (301, clean + .html forms) mapping every old flat /tools/<id> URL to its new path so inbound links keep working. Rewrite all internal /tools links. Verified with a clean docs build (no dead links).
2026-06-18 14:12:28 +08:00

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---
description: Remove password protection from a PDF.
---
# Unlock PDF
Remove password protection from an encrypted PDF by providing the correct password.
## API Endpoint
`POST /api/v1/tools/pdf/unlock-pdf`
Accepts multipart form data with a PDF file and a JSON `settings` field.
## Parameters
| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| password | string | Yes | - | Password to decrypt the PDF (1-256 characters) |
## Example Request
```bash
curl -X POST http://localhost:1349/api/v1/tools/pdf/unlock-pdf \
-H "Authorization: Bearer si_your-api-key" \
-F "file=@document.pdf" \
-F 'settings={"password": "s3cret"}'
```
## Example Response
```json
{
"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/document.pdf",
"originalSize": 2500000,
"processedSize": 2450000
}
```
## Notes
- The correct password must be provided; an incorrect password returns a 400 error.
- Either the user password or the owner password will work for decryption.
- Passwords are redacted from audit logs.