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Changelog

User-facing changes to the Akator Image Matcher API. Internal-only releases (monitoring, tooling, dependencies, deployment) are omitted, so version numbers may skip.

v1.2.18

patch 2026-06-08
  • Compare now detects horizontally mirrored images
  • Upload size limit raised to 25 MB
  • Under heavy load the API now returns 503 with a Retry-After header instead of 500, so clients can back off and retry
  • Oversized uploads to Compare now return 413 (Payload Too Large) instead of 400
  • Fixed several cases that could return HTTP 500: very low-detail reference images (solid colours, simple logos), the first request from certain email addresses, and match scores that could exceed 100%
  • Collection timestamps (created_at, updated_at) are now valid ISO 8601

v1.2.17

patch 2026-04-20
  • Fixed 502 Bad Gateway errors on the Match endpoint under concurrent load

v1.2.15

patch 2026-02-24
  • Fixed an error when deleting certain older images
  • Faster matching: non-matching candidates are now rejected earlier in the pipeline

v1.2.10

patch 2026-01-09
  • Fixed match results that could fail for crops and partial overlaps (matched region extending beyond the image bounds)
  • Cleaner error responses: internal stack traces are no longer exposed, and each error carries a request ID
  • Faster matching through pipeline optimizations

v1.2.9

patch 2026-01-06
  • Fixed image upload by URL when the remote server does not support HEAD requests

v1.2.8

patch 2025-12-11
  • Fixed Compare failing for non-square images

v1.2.0

minor 2025-12-10
  • API v1.1: every response now includes a request_id for easier support and tracing
  • New standardized error format (structured errors with code, message and field)
  • Compare: response status changed from "ok" to "success" (breaking change)
  • Faster matching via new caching layers
  • Expanded, more detailed API documentation

v1.1.0

minor 2025-05-30
  • More reliable Compare results when only a few matching features are found
  • Clearer error message for corrupted PNG uploads

v1.0.0

major 2024-12-12
  • Initial release
  • Match images against your own collections — even after resize, crop, rotation, mirroring, recompression and colour changes
  • Compare two images directly
  • Organize reported images in collections
  • Real-time matching for upload screening
  • Hosted in Germany, GDPR-compliant

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