how to post image avoiding modification to keep it AS-IS (original)?

[itaru2622]

I'm trying to post and share image AS-IS but no success yet.

even I post small jpeg file, it is applied modification ( cannot keep original).
my conditions are:

• client to post image: https://github.com/bluesky-social/cookbook/tree/main/python-bsky-post
• server: official bsky.social
• client to view and download image: official web client ( bsky.app )

post with below image (512x512 24kB) becomes bigger (2000x2000 64kB) when downloading after posting.

I found some condition on posting image, such as #442 .
but couldn't found how to post image to avoid modification (keep it original).

cf. above test image created from current social-app icon.

[DavidBuchanan314]

Images do get posted as-is, but they don't get served back as-is by the default bsky.app client. You can request the originals via the com.atproto.sync.getBlob API

[itaru2622]

@bnewbold thank you for your detail description.

I'd like to confirm my understanding:
as far as using current official client (such as social-app),
there is no method to view original image stored into PDS, because client serves image via CDN with some modifying for latency.

[bnewbold]

That's correct.

You could file a feature request (github issue) over in the https://github.com/bluesky-social/social-app repo if you'd like the official app to have some way to download the original image (eg, via a drop-down menu or something like that). I'm not sure that would be prioritized, but seems like a reasonable request.

[itaru2622]

@bnewbold thank you for your comment. I posted this as issue, bluesky-social/social-app#2380

[ProgrammerWhoPrograms]

the bsky appview (which is the network service which implements the bluesky micro-blogging application)

Are alternative app views for bluesky or other social modes possible?

[itaru2622]

@ProgrammerWhoPrograms I couldn't understand your question. could you describe what you concern in more specific? because bnewbold described lots of things in the above comment.

[itaru2622]

@bnewbold @DavidBuchanan314 thank you for your responses, I could download original image with com.atproto.sync.getBlob after getting cid within app.bsky.feed.getAuthorFeed

[itaru2622]

I confirmed that patch to below line resolve this issue, through debugging.

atproto/packages/bsky/src/services/feed/views.ts

Lines 369 to 373 in e4ec7af

	fullsize: this.imgUriBuilder.getPresetUri(
	'feed_fullsize',
	did,
	img.image.ref,
	),

by change URL to getBlob endpoint like below:

fullsize: `https://bsky.social/xrpc/${ids.ComAtprotoSyncGetBlob}?did=${did}&cid=${img.image.ref}`,

[syui]

@itaru2622 Is there a way to display images on the timeline in self-hosting?

It seems that the image resizing service is set to BSKY_IMG_URI_ENDPOINT, but I don't know if such a service is running in the environment.

Currently, access the image using the following URI:

1. https://appview.${host}/img/avatar/plain/${did}/${cid}@jpeg

2. https://${host}/xrpc/com.atproto.sync.getBlob?did=${did}&cid=${cid}

[google translate]

[syui]

thx, it's probably working fine with this patch.

https://github.com/itaru2622/bluesky-selfhost-env/blob/master/patching/160-social-app-disable-hackModifyThumbnailPath.diff

[itaru2622]

@syui
try below env var instead of BSKY_IMG_URI_ENDPOINT.

atproto/services/bsky/README.md

Line 16 in 60df3fc

- `BSKY_BLOB_CACHE_LOC` - when `BSKY_IMG_URI_ENDPOINT` is not set, this determines where resized blobs are cached by the image resizing service.

BSKY_IMG_URI_ENDPOINT is different matter than this discussion topic.
it is better to create new one.