# NousResearch/hermes-agent · Fix RGBA PNG crash in SimpleX thumbnail encoding

## Open now

- Nothing open on GitHub.

These issues and fixes address a crash in the SimpleX adapter when sending RGBA PNG images (such as KDE screenshots), caused by attempting to encode an alpha-channel image as a JPEG thumbnail. The fix involves flattening or handling the alpha channel before encoding.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #117603. Verify it addresses your case.
- **Recommended:** read PR #117603 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-117603`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.50`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #117225: \[Bug\]: SimpleX adapter: sending an RGBA PNG (every KDE screenshot) dies with 'cannot write mode RGBA as JPEG'

## Prior & competing PRs

- **#117603: fix(simplex): alpha PNG images deliver instead of dying on the JPEG thumbnail (#117225, salvage #117243)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `plugins/platforms/simplex/adapter.py`, `tests/gateway/test_simplex_plugin.py`
- **#117243: fix(simplex): send alpha PNG images without thumbnail crashes**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `45a701d8b0`, `#117603`
- **#117317: fix(simplex): flatten alpha before JPEG thumbnail encoding**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `45a701d8b0`, `#117603`

## Fix status

- Merged to main in PR #117603 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-20`.