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Hey I'm trying to make all .doc/docx .xls/xlsx files open in office online.

This would mean that every link to a .doc

would have to instead point to the office online preview link

I'm not even sure how to go about doing this? Any help would be greatly appreciated!


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2 Answers 2

up vote 4 down vote accepted

I'm not sure this question is WordPress-related. It sounds like it might be handled via .htaccess redirect, or a browser extension.

That said: you could try to use the wp_get_attachment_url filter, that is applied to the URL returned by wp_get_attachment_url().

For example:

function wpse95271_filter_wp_get_attachment_url( $url ) {
    if ( 0 === stripos( strrev( $url ), 'cod.' ) ) {
        // This is a Word doc; modify the URL
        $url = '' . $url;
    return $url;
add_filter( 'wp_get_attachment_url', 'wpse95271_filter_wp_get_attachment_url' );

(This is completely untested, and presented as an example only.)


a) how can I add .docx, .xls, .xlsx?

Just extend the conditional. Here's an example, abstracted for clarity:

function wpse95271_filter_wp_get_attachment_url( $url ) {
    // Using a simple ternary expression;
    // there may be better ways, such as
    // an array of doc extensions, and a
    // foreach loop, etc
    $is_msoffice_doc = (
        0 === stripos( strrev( $url ), 'cod.' ) ||
        0 === stripos( strrev( $url ), 'xcod.' ) ||
        0 === stripos( strrev( $url ), 'slx.' ) ||
        0 === stripos( strrev( $url ), 'xslx.' ) ? true : false
    if ( $is_msoffice_doc ) {
        // This is an Office doc; modify the URL
        $url = '' . $url;
    return $url;
add_filter( 'wp_get_attachment_url', 'wpse95271_filter_wp_get_attachment_url' );

b) instead of replacing the url can I add a link next to the normal download link that says "open online" with a link to this?

Just build your own link in your template, appending the attachment URL to your base URL, as done in the above filter.

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Thanks that's really great, I guess we just need to find the conditional to identify them as .doc files! – ameeromar Apr 10 '13 at 11:47
@ameeromar See my edit, test it. – toscho Apr 10 '13 at 12:01
That is absolutely amazing!! Thank you so much, amazing code! two small questions: a) how can I add .docx, .xls, .xlsx? b) instead of replacing the url can I add a link next to the normal download link that says "open online" with a link to this? – ameeromar Apr 10 '13 at 12:08
Re: the first question: just use the same conditional for any other document extensions you need; re: the second question: that's actually a separate question entirely. – Chip Bennett Apr 10 '13 at 12:13
See edited answer, that attempts to answer your two questions. – Chip Bennett Apr 10 '13 at 12:20

If you have inserted your MS Office document-links via the insert link button in the editor, you might try this one:

function edit_ms_office_links($content) {
    $viewer = "";
        foreach($match[1] as $link){
    return $content;

this will add the $viewer part before the doc, xls, docx, xlsx documents links.

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Thanks for that, unfotunately they are all attachments, not links! – ameeromar Apr 10 '13 at 12:55

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