Watermark PDF API
Add a text or image watermark with opacity, rotation, tiling, position, page range and above- or below-content placement.
Environment
| Environment | Base URL |
|---|---|
| Production | https://api.sadafiles.com/v1 |
There is one environment and no sandbox, so every request here is real and counts toward your limits.
Request
POSThttps://api.sadafiles.com/v1/tools/watermark-pdf
- Content type
- multipart/form-data
- Auth
- X-API-Key with tools:run
- Accepts
- Files per request
- 1 to 500
- Largest file
- 2 GB
- Job timeout
- 120 s
- Rate weight
- 2 units
- Web tool
- Use Watermark PDF without code
Parameters
Send these as a JSON string in the options form field. Anything else is rejected.
| Name | Type | Default | Allowed |
|---|---|---|---|
kind | string | text | text, image |
text | string | CONFIDENTIAL | — |
image | string | — | — |
opacity | integer | 30 | min 5, max 100, % |
rotation | integer | -45 | min -180, max 180, ° |
fontSize | integer | 48 | min 8, max 200, pt |
color | string | #888888 | — |
position | string | center | center, topLeft, topRight, bottomLeft, bottomRight, tile |
layer | string | above | above, below |
pages | string | all | — |
Response
| Status | Body | When |
|---|---|---|
201 | The run finished within 60 seconds | |
202 | Job summary JSON | Still running; poll the job |
4xx, 5xx | Error JSON | See error codes |
A file response carries X-Sada-Job and X-Sada-Expires-At. For long work, post to /v1/tools/watermark-pdf/jobs instead. See jobs and webhooks.
Also runs on the device
In the web tool and apps, Watermark PDF can run locally with no upload. The API always processes on the server.
Ready settings
These settings power the matching pages on the site, and work the same in the API.
| Use | options |
|---|---|
| Add CONFIDENTIAL Watermark to PDF | {"kind":"text","text":"CONFIDENTIAL"} |
| Add DRAFT Watermark to PDF | {"kind":"text","text":"DRAFT"} |
Try it yourself!
Pick a file, set the options and run a real request with your key. The code follows your changes.