New users get free credits - no credit card required Get started
APIAny logoAPIAny
Paid account required

Calculate SHA-256 Checksums for Uploaded Files

Calculate one SHA-256 checksum per accepted upload and return ordered JSON results.

POST /api/free/batch-image-hash

Use Calculate SHA-256 Checksums for Uploaded Files online

Upload and manage a batch without entering an API key. Running the job requires a signed-in paid account.

Paid access · no key field

1. Upload and settings

Use this tool online without an API key. Files are sent only when you run the request.

Image files *
Complete the required fields to run the tool.POST /api/free-online/batch-image-hash

2. Preview and download

Your result will appear here

Preview, size changes and download controls are shown here

When to use this batch API

A batch image hash API calculates a SHA-256 checksum for each accepted file. Matching hashes indicate identical file bytes, not merely similar visual content.

Common workflows

  • Detect duplicate binary assets before storage.
  • Verify image transfers and cache contents.
  • Create deterministic integrity records for media pipelines.
  1. 01Upload the images you want to process with Batch Calculate Image Hashes.
  2. 02Choose one shared parameter set for the whole batch.
  3. 03Run the job, review per-file status, and download the ZIP or JSON result.

Use repeated files fields, then set Image files. SHA-256 identifies byte-identical files and is calculated independently for every accepted upload.

Related single-image API

Use the single-image endpoint for free one-off processing, or this paid batch endpoint for repeatable multi-file work.

Calculate Image Hash
Inspect Image Format, Dimensions and Color DataBatch Extract Color Palettes

Integrate with the API

Programmatic batch calls require an API key owned by a paid account. One batch request counts as one API request.

API endpoint
POST /api/free/batch-image-hash

Use an APIAny key from a paid account. The API accepts up to 20 files and 100 MB total per request.

How it works
  • SHA-256 identifies byte-identical files and is calculated independently for every accepted upload.
  • The response preserves upload order and reports invalid files without stopping other hashes.

Response

A successful request returns a json 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

ParameterRequirementDefaultAccepted values
filesImage filesRequired—file

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-image-hash" \
  -H "Authorization: Bearer $API_KEY" \
  -F "files=@a.png" \
  -F "files=@b.jpg"

Frequently asked questions

Who can run Batch Calculate Image Hashes?

The page is public, but online execution requires a paid login and API calls require a paid account key.

What are the Batch Calculate Image Hashes 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 Calculate Image Hashes return?

It returns JSON. The response preserves upload order and reports invalid files without stopping other hashes.

Can Batch Calculate Image Hashes finish when one file fails?

Yes. Files are processed independently, successful results remain available, and failed items include an error code.

Source: APIAny free API catalog and live route behavior. Content reviewed 2026-07-17.