Undocumented/unintended? Max preview size limited by wiki max page size

[charlesc-web-feedback-trac@…]

I'd bumped the attachment size limit on our local Trac instance up from the default 256K to 1M, but another developer noted that when he uploaded a PNG image that was >256K, the attachment link still stated "HTML preview not available, since the file size exceeds 262144 bytes".

Raising the apparently-unrelated [wiki] max_size configuration item to 1M solves the problem. So it looks to me like the max previewable size is actually the lower of (mimeviewer.max_preview_size, wiki.max_size). Whether that's what was intended is another issue…

[Remy Blank]

We need to check that.

[anonymous]

I changed my max attachment and wiki page sizes to 1M and I still get the "HTML preview not available, since the file size exceeds 262144 bytes" message.

My Trac version is 0.12.2

[Christian Boos]

Force reload in the browser?

[markus.pelkonen@…]

Having same problem.. png size is ~ 340k… Image macro renders thumbnail (forced to be small) nicely, but once I click the thumbnail, I get this error. Changed

[mimeviewer]
max_preview_size = 1048576

⇒ No help.

Changed also

[wiki]
max_size = 1048576

No help.

Restarted my apache and forced reload with browser.. no help.. Please let me know if there is any other place where form I could workaround this.

[markus.pelkonen@…]

Ah, and by the way I inherit ~ 90% of configurations from shared project.ini if that would explain…

[anonymous]

hmm.. this was very weird cache problem… after third forced reload, i got the page properly rendered..

[olive@…]

Replying to anonymous:

hmm.. this was very weird cache problem… after third forced reload, i got the page properly rendered..

Idem here: wiki::max_size is not required, but I needed to force-reload 3 or 4 times the page to get the preview correctly the PNG.

[Ryan J Ollos]

Moved ticket assigned to next-stable-1.0.x since maintenance of 1.0.x is coming to a close. Please move the ticket back if it's critical to fix on 1.0.x.

[anonymous]

Powered by Trac 1.5.3

I increased the attachment max_size to 5242880 (5M) then I was able to upload my images. Then when I clicked the attachment link, I got

HTML preview not available, since the file size exceeds 256.0 KB

However referencing the pictures in comments like thumbnails

[[Image(picture.jpg, 120)]]

works fine.

[Jun Omae]

I increased the attachment max_size to 5242880 (5M) then I was able to upload my images. Then when I clicked the attachment link, I got

Please ask on the mailing list for support questions. Do not ask here.

HTML preview not available, since the file size exceeds 256.0 KB

Try to configure [mimeviewer] max_preview_size, not [attachment] max_size.

[Ryan J Ollos]

Milestone renamed