Image Composition APIs
Image Composition APIs groups related browser tools and authenticated API routes for developers who need a repeatable, non-generative workflow.
Free image composition APIs combine and package visual assets with predictable layouts, file limits and downloadable results.
Image Composition APIs tools
Watermark, split, join and package images for publishing.
Watermark
POST /api/free/watermark
Apply a text or image watermark to a single image.
Batch watermark
POST /api/free/batch-watermark
Apply the same text or image watermark to up to 20 images.
Grid image cutter
POST /api/free/grid-cut-image
Split one image into an even grid and download all tiles as a ZIP.
Image joiner
POST /api/free/join-images
Join up to 20 images horizontally or vertically with optional spacing.
Favicon generator
POST /api/free/favicon-generator
Create common PNG favicon sizes and a web manifest in one ZIP.
From browser result to API integration
Every tool supports a quick online workflow and a documented API route. Test the input first, review the output, then reuse the curl example in your application.
Try online
Choose a file and settings in the no-key Playground.
Review output
Preview JSON or media results and download the generated asset.
Call the API
Create an APIAny key and move the same parameters into your code.
What this API category is designed for
Free image composition APIs combine and package visual assets with predictable layouts, file limits and downloadable results.
- Apply consistent watermarks to campaign assets.
- Join screenshots or split social media grids.
- Generate standard favicon files from one source image.
Related API categories
Questions about Image Composition APIs
What does Image Composition APIs include?
This category collects the tools listed above and documents their inputs, outputs, limits and deterministic processing behavior.
Can I test Image Composition APIs tools online?
Yes. Each detail page includes a browser Playground for supported one-off operations; paid batch tools state their account requirement before execution.
How do I automate a Image Composition APIs workflow?
Open a tool page, review its parameters and response, then call the documented route with an APIAny key.