Preview for Redmine · RedminePRO Docs

Q: An attachment downloads instead of opening.

Its type is not previewable, or its extension is listed in Disabled extensions.

Q: A text file is cut short.

It is larger than Text preview size cap. The notice says so; download it for the whole file. Raise the cap if your workspace routinely attaches bigger text.

Q: Markdown or a spreadsheet shows as plain text.

Extended text formats is off. Turn it on for rendered markdown and tabular files.

Click an attachment's name and it opens in a popup on the page. Images, PDFs and text appear immediately; everything else downloads exactly as it did before. It saves the download-open-delete cycle that every screenshot on every ticket otherwise costs.

What you can do

Availability: Every plan.
Turn it on: Nothing to turn on. It applies wherever attachments already appear, for everyone who can already see them.
Permissions: None of its own. An attachment is previewable exactly when the reader may download it.
Settings: Disabled extensions is the escape hatch when a file type is better downloaded than skimmed in your workspace.
Using it: Click an attachment's name anywhere it appears. Images, PDFs and text open in the popup.

Which formats preview, and the size cap — From a live RedminePRO workspace.

Configure

Settings, permissions, modules and how to use it on RedminePRO Cloud.

Install on your own Redmine

Requirements, install, update and remove, for a self-hosted Redmine 6.

Common questions

An attachment downloads instead of opening.

Its type is not previewable, or its extension is listed in Disabled extensions.

A text file is cut short.

It is larger than Text preview size cap. The notice says so; download it for the whole file. Raise the cap if your workspace routinely attaches bigger text.

Markdown or a spreadsheet shows as plain text.

Extended text formats is off. Turn it on for rendered markdown and tabular files.