Altr API

GET /fetch?url=

Proxy requests for media URLs. URLs may point directly to an image, video, or audio file, or to a YouTube video. Streams the result to the client.

POST /upload

Post multipart/form-data with an image, video, or audio file under the key file and various options. Responds with the altered file.

Image

Supported formats: jpg, png, tiff, webp

• format: output format
• width: output width
• height: output height
• quality: quality 1-100, applies to jpg, webp, and tiff
• compression: OptiPNG compression level (0-7), applies to png

Video

Supported formats: mp4, mov, wmv, avi, mkv, webm

• format: output format
• width: output width
• height: output height
• start: start time (s)
• end: end time (s)

Audio

Supported formats: mp3, wav, wma, avi, webm

• format: output format
• start: start time (s)
• end: end time (s)