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POST
Create a signed transform URL

Authorizations

Authorization
string
header
required

Dashboard-generated Convertly API key. Keys currently begin with cvly_.

Body

application/json
sourceUrl
string<uri>
required

Public HTTPS image URL to transform.

preset
enum<string>
Available options:
ecommerce,
avatar,
blog-hero,
social-preview
width
integer
height
integer
fit
enum<string>
Available options:
cover,
contain,
fill,
inside,
outside
cropLeft
integer
cropTop
integer
cropWidth
integer
cropHeight
integer
format
enum<string>
Available options:
jpg,
png,
webp,
avif
quality
integer
Required range: 1 <= x <= 100
expiresIn
integer
default:3600
Required range: 60 <= x <= 604800

Response

Signed image transform URL

url
string<uri>
required
expiresAt
string<date-time>
required
Last modified on July 31, 2026