Edgewall Software

Opened 10 years ago

Last modified 5 months ago

#9771 new defect

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

Reported by: charlesc-web-feedback-trac@… Owned by:
Priority: normal Milestone: next-stable-1.4.x
Component: attachment Version: 0.12-stable
Severity: normal Keywords: max preview size verify
Cc: jorrit@… Branch:
Release Notes:
API Changes:
Internal Changes:


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…

Attachments (0)

Change History (11)

comment:1 by Remy Blank, 10 years ago

Keywords: verify added
Milestone: next-minor-0.12.x

We need to check that.

comment:2 by anonymous, 9 years ago

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

comment:3 by Christian Boos, 9 years ago

Force reload in the browser?

comment:4 by markus.pelkonen@…, 8 years ago

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

max_preview_size = 1048576

⇒ No help.

Changed also

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.

comment:5 by markus.pelkonen@…, 8 years ago

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

comment:6 by anonymous, 8 years ago

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

in reply to:  6 comment:7 by olive@…, 8 years ago

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.

comment:8 by jorrit@…, 6 years ago

Cc: jorrit@… added

comment:9 by Ryan J Ollos, 6 years ago

Milestone: next-minor-0.12.xnext-stable-1.0.x

comment:10 by Ryan J Ollos, 4 years ago

Milestone: next-stable-1.0.xnext-stable-1.2.x

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.

comment:11 by Ryan J Ollos, 5 months ago

Milestone: next-stable-1.2.xnext-stable-1.4.x

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