Batch Convert Images
Convert multiple images to WebP, PNG, JPEG or AVIF and download one ZIP with a per-file manifest.
POST /api/free/batch-convert-imagesUse Batch Convert Images online
Upload and manage a batch without entering an API key. Running the job requires a signed-in paid account.
1. Upload and settings
Use this tool online without an API key. Files are sent only when you run the request.
2. Preview and download
Preview, size changes and download controls are shown here
When to use this batch API
A batch image converter changes several source images to one selected web format in a single controlled job. It is designed for deterministic asset normalization, not generative image editing.
Common workflows
- Normalize mixed product uploads to WebP before publishing.
- Create consistent JPEG or PNG deliverables for clients.
- Move repeated image-format conversion from manual tools into a backend workflow.
- 01Upload the images you want to process with Batch Convert Images.
- 02Choose one shared parameter set for the whole batch.
- 03Run the job, review per-file status, and download the ZIP or JSON result.
Use repeated files fields, then set Image files, Output format, Quality. Paid accounts can convert up to 20 images per API request or 10 in the online Playground.
Related single-image API
Use the single-image endpoint for free one-off processing, or this paid batch endpoint for repeatable multi-file work.
Convert Image FormatIntegrate with the API
Programmatic batch calls require an API key owned by a paid account. One batch request counts as one API request.
POST /api/free/batch-convert-imagesUse an APIAny key from a paid account. The API accepts up to 20 files and 100 MB total per request.
- Paid accounts can convert up to 20 images per API request or 10 in the online Playground.
- Successful files and manifest.json are returned in one ZIP; one failed image does not stop the batch.
Response
A successful request returns a zip response with the Content-Type described by this page.
Common errors
- 400
- A file or parameter is missing, invalid or outside the documented limit.
- 401
- The API key is missing, invalid or disabled for programmatic API calls.
- 429
- The online or authenticated shared rate limit has been reached.
Parameters and limits
| Parameter | Requirement | Default | Accepted values |
|---|---|---|---|
filesImage files | Required | — | file |
formatOutput format | Optional | webp | webp, png, jpeg, avif |
qualityQuality | Optional | 82 | number |
API example
Use this authenticated example in code. The online Playground above intentionally does not request or expose your key.
curl -X POST "https://apiany.ai/api/free/batch-convert-images" \ -H "Authorization: Bearer $API_KEY" \ -F "files=@a.png" \ -F "files=@b.jpg" \ -F "format=webp" \ -F "quality=82" \ --output converted-images.zip
Frequently asked questions
Who can run Batch Convert Images?
The page is public, but online execution requires a paid login and API calls require a paid account key.
What are the Batch Convert Images file limits?
Online jobs accept 10 files and 50 MB total; API jobs accept 20 files and 100 MB total; each file can be 30 MB.
What does Batch Convert Images return?
It returns ZIP + manifest.json. Successful files and manifest.json are returned in one ZIP; one failed image does not stop the batch.
Can Batch Convert Images finish when one file fails?
Yes. Files are processed independently, successful results remain available, and failed items include an error code.