Change Image DPI API
Set 72, 150, 300 or custom DPI without resampling — or resample to a physical print size.
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/change-dpi
- Content type
- multipart/form-data
- Auth
- X-API-Key with tools:run
- Accepts
- jpg, png, webp, avif, gif, bmp, tiff, heic and 1 more
- Files per request
- 1 to 500
- Largest file
- 2 GB
- Job timeout
- 120 s
- Rate weight
- 2 units
Parameters
Send these as a JSON string in the options form field. Anything else is rejected.
| Name | Type | Default | Allowed |
|---|---|---|---|
dpi | integer | 300 | min 1, max 2400, dpi |
resample | boolean | false | — |
widthMm | number | — | mm |
Response
| Status | Body | When |
|---|---|---|
201 | same | 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/change-dpi/jobs instead. See jobs and webhooks.
Also runs on the device
In the web tool and apps, Change Image DPI 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 |
|---|---|
| Change Image to 300 DPI | {"dpi":300} |
| Change Image to 72 DPI | {"dpi":72} |
Try it yourself!
Pick a file, set the options and run a real request with your key. The code follows your changes.