Cannot put a local file URL in card description in Trello

Question

I have seen that other users can link to local files from a card, using Markdown syntax.

I can do it in a comment (writing directly the file:/// URL) but I would like to do it in the card description. In this field I can put an URL to internet content, but I have not been able to do it for local content.

I write in card description this:

[File](file:///c:/Unidad%20E/User/Documentos/servicios%20interactivos/Autoescuela/desarrollo/dise%C3%B1o%20gr%C3%A1fico/FileName.pdf)

When I save the description, the word "File" is showed as a link, but when I click on it, Trello opens again the card description box for editing.

Is it a specific problem for this field?

Answer 1

It doesn't look like the file:/// syntax is supported.

I tried Markdown and "plain text" formatting in the description and checklist items using file:///, mapped drive and UNC syntaxes, unfortunately none of the combinations worked.

Typing a web address (http://) into a description or a checklist item works (even without Markdown, which checklists don't support), so probably they'd have to add support for the file:/// syntax (either directly or add it to Markdown).

Answer 2

I think the best answer can be found here: http://help.trello.com/article/1040-why-cant-i-open-file-links

This is from their site:

If you need to reference a specific shared drive file, you can paste a link to that file (such as file://F/image.png) in a card comment or description.

When that link is clicked on, Trello will prompt you to copy the link and paste it in to your own browser. (For security reasons, Trello is not able to directly open file protocols other than http://, https://, or mailto:.) Your computer will then try to open the file.

For ftp:// links specifically, your browser should try to open them directly if you click on them in the card description or comments.