GitHub user dosubot[bot] added a comment to the discussion: download actions 
for charts

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No, this isn't possible out of the box. Superset's download controls are gated 
by role permissions and feature flags, not by chart/viz type, so you can't 
natively allow "Download as image" on Bar/Line charts while hiding it on Tables.

Here's how the Download menu on a dashboard chart works:

- The entire **Download** submenu only appears when the user's role has 
`can_csv` on `Superset` (your existing permission) 
[[1]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/src/dashboard/components/SliceHeaderControls/index.tsx#L448-L449).
- Within it, "Export to .CSV" and "Export to Excel" always show; "Export to 
Pivoted .CSV" only shows for Pivot Tables; "Export to full .CSV/Excel" only 
shows for Table charts when `ALLOW_FULL_CSV_EXPORT` is enabled 
[[2]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/src/dashboard/components/SliceHeaderControls/index.tsx#L450-L488).
- **"Download as image" is unconditional** — it renders for every chart type 
once the Download submenu is visible. There's no `viz_type` check gating it 
[[3]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/src/dashboard/components/SliceHeaderControls/index.tsx#L490-L495).
- The `usePermissions` hook backs this with a single boolean `canDownload` tied 
to `can_csv` — no per-chart-type or per-format granularity 
[[4]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/src/hooks/usePermissions.ts#L33-L35).

So `can_csv` is an all-or-nothing switch for the whole Download submenu (CSV, 
Excel, and image) across every chart on the dashboard.

**Two things worth knowing:**

1. **Granular export controls** — Superset has introduced more granular 
permissions (`can_export_data`, `can_export_image`, `can_copy_clipboard`) 
behind the `GRANULAR_EXPORT_CONTROLS` feature flag 
[[5]](https://github.com/apache/superset/pull/38361) 
[[6]](https://github.com/apache/superset/pull/38581). This splits image export 
from data export, but it's still **not per-chart-type** — disabling 
`can_export_image` would hide "Download as image" for *all* charts, not just 
Table. The dashboard download button also respects this flag 
[[7]](https://github.com/apache/superset/pull/41799).

2. **`VIZ_TYPE_DENYLIST`** in `superset/config.py` prevents a viz type from 
being used entirely 
[[8]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/config.py#L918-L924)
 — not what you want, since you still want Table charts visible.

To get exactly the behavior you're describing (image download disabled on Table 
only, enabled on Bar/Line), you'd need to **customize the frontend** — 
specifically, patch `SliceHeaderControls` to add a `viz_type` check around the 
`DownloadAsImage` menu item 
[[3]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/src/dashboard/components/SliceHeaderControls/index.tsx#L490-L495).
 There's no existing permission or config surface for per-chart-type download 
control.

Would you like me to dig into what that frontend change would look like?


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GitHub link: 
https://github.com/apache/superset/discussions/43642#discussioncomment-18184990

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