Wikipedia:Merging
Wikipedia information page
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A merge or merger is the process of uniting two or more articles into a single article. It is done by copying some or all content from the source article(s) into the destination article and then replacing the source article with a redirect to the destination article.
This is an information page. It is not one of Wikipedia's policies or guidelines, rather, its purpose is to explain certain aspects of Wikipedia's norms or practices. It may reflect varying levels of consensus. |
Any editor can perform a merge. If merging is obviously needed and is not controversial, editors are encouraged to be bold and simply do it themselves. You do not need permission or prior discussion to proceed. While bold merges may be reverted entirely, the process and the discussion after the revert often result in better articles.
If you have reason to believe that merging an article is controversial, nominate it for merging at AfD. Young or short articles and stubs that only differ in wording can be bold merged immediately. Longer articles that have been separate for a long time are usually discussed first, especially if they concern controversial topics. If you want to first gauge whether there is opposition to a potential merge or want to hear other editors' opinions, you can seek input through standard consensus-building venues, most commonly the destination article's talk page or Wikipedia talk:Merging.
When performing a merge, remember to attribute copied content, as required by copyright. At minimum, this means including Merged content from [[SOURCEPAGE]] in your edit summaries. See the instructions below on performing merges for more information.
Reasons to merge articles
There are several good reasons to merge articles:
- Duplicate: There are two or more articles on the same subject and with the same scope, also known as redundant content forks. If the content fork was unjustified, the article created more recently should be merged into the older one. If a duplicate article was created recently, it may also be a candidate for A10 speedy deletion.
- Overlap: There are two or more articles on related subjects that have a large overlap and might be redundant. Wikipedia is not a dictionary; there does not need to be a separate entry for every concept. For example, "flammable" and "non-flammable" can both be explained in an article on flammability.
- Short text: If a article is very short (consisting of perhaps only one or two sentences) and is, in your opinion as editor, unlikely to be expanded within a "reasonable" (unspecified) amount of time, it often makes sense to merge it into a article on a broader topic.
- Context: Some topics that are independently notable are best covered in the same article in order to better serve reader understanding. For example, if a short article requires the background material or context from a broader article in order for readers to understand it.
- Insufficient notability: Articles about non-notable topics can have content which if added to another article would make that article better. While this can also be implemented through the AfD process, merging directly may be more efficient. For example, parents or children of a celebrity who themselves are otherwise unremarkable are generally covered in a section of the article on the celebrity.
Merging should be avoided if:
- the resulting article would be too long or "clunky";
- the separate topics could be expanded into longer standalone (but cross-linked) articles.
Starting a merge proposal
Nominate the source article for merging at AfD if you have reason to believe that the proposal is controversial. As an example, if suggesting that Source article be merged into Destination article, nominate Source article for merging at AfD by following these instructions. It is recommended to make your merge nomination specific and clear; if relying on one of the reasons to merge, be specific as to how it applies.
If a an AfD discussion is already open but you would like to propose an alternative target or outcome (e.g., delete), do not nominate the article a second time. Instead, consider contributing to the open discussion.
You can optionally notify contributors to the articles involved. One way is to ping them in a comment on the merge proposal, such as . Alternatively, create a new topic on those users' talk pages with {{ping|User1|User2|User3|...}} Notifying contributors to the articles. ~~~~{{subst:Mergenote|Source article}}. Respect neutrality when making invitations to participate in the discussion; selectively notifying editors is not allowed.
Procedure
The main reason that the merge backlog includes hundreds of articles is because the people who support the merge neglect to undertake this final step. Any editor, including the editor who originally proposed the merge, is permitted to perform a merge in accordance with consensus, as merging articles does not require intervention from an administrator.
To avoid manually making many repetitive and time-consuming edits, it is recommended to install the easy-merge script before proceeding; the instructions below will explain where and how to use it. To merge articles, follow the steps below:
- Copy all or some of the content from the source article and paste it in an appropriate location at the destination article. If you think the merge is especially complex and will take you a lot of time to fully clean up, you can let other editors know by placing {{In use}} or {{Inuse-section}} atop the article. Then, immediately publish your edit, even if it duplicates some parts or it looks messy, and link to the source article in your an edit summary:
[[H:M|Merged]] content from [[SOURCEPAGE]]. See the discussion at [[Wikipedia:Articles for deletion/SOURCEPAGE]].
- Do any necessary rearranging and copy editing ideally in a second edit, to simplify attribution. In this edit, also remove any leftover {{Merge}}, {{Being merged}}, or {{In use}} templates from the destination article.
- Redirect the source article whose content was just merged.
- To do this more quickly, install the easy-merge script and reload the source article. Then, click the "easy-merge" link in the "Tools" section of your sidebar and tick the box that says:
Redirect this page to the target page. If you want to enable other options, read the optional step 6 below before clicking Submit. - To do it manually instead, replace everything in the source article with:
#REDIRECT [[DESTINATIONPAGE]] {{Rcat|{{R from merge}}}}, or, if you merged the content to a section:#REDIRECT [[DESTINATIONPAGE#Name of the section]] {{Rcat|{{R from merge}}{{R to section}}}}. Then publish your changes using an edit summary such as:[[H:M|Merged]] content to [[DESTINATIONPAGE]]. See the discussion at [[Wikipedia:Articles for deletion/SOURCEPAGE]].
- To do this more quickly, install the easy-merge script and reload the source article. Then, click the "easy-merge" link in the "Tools" section of your sidebar and tick the box that says:
- Check for non-free files used on the destination. In the rare cases where there are any, the article mentioned in the rationale should be updated to the destination article's per the non-free content criteria. You can recognise non-free files from their file descriptions, as they have a red copyright icon and a non-free use rationale (a summary box with Non-free use rationale in the title, or a Fair use section: see examples).
And that's it! You've successfully merged two articles!
Optional steps
- (Optional) If the source article has a talk page, reconcile the talk page banners. Move any previously added
{{Merged-from}}and{{Copied}}templates to the destination's talk page and copy the various{{WikiProject}}templates to the destination. Remove duplicates (look out for alternative templates; e.g.{{WikiProject Software|Computing=yes}}is the same as{{WikiProject Computing|Software=yes}}). When merging an article to a different destination that the one chosen at AfD, remove the {{Afd-merge from}} template from the talk page of the destination. - (Optional) Tag the talk pages with the relevant templates for posterity.
- If the merge was not discussed at Articles for deletion, for example if it's a bold merge or it was discussed elsewhere, you can optionally add the {{merged-to}} tag to the source's talk page and the {{merged-from}} to the destination's talk page:
- This action is performed automatically when using the easy-merge script; simply tick the two boxes that say:
Add {{merged-to/from}} to talk page of target/this page, and click Submit. - To do it manually, place
{{Merged-from|SOURCEPAGE|April 2026}}atop the destination's talk page and{{Merged-to|DESTINATIONPAGE|April 2026}}atop the source's talk page. To collapse many similar merge banners into one, experienced users may alternatively place this on both talk pages:{{Copied |merge=yes |from= |from_oldid= |to= |to_oldid= |to_diff= |date=April 2026}}
- This action is performed automatically when using the easy-merge script; simply tick the two boxes that say:
- If the merge was discussed at Articles for deletion and the {{Afd-merge from}} template is already on the destination's talk page, do not add another banner to the destination's talk page. However, you can optionally add a tag to the source article's talk page:
- If you are using the easy-merge script, keep this option disabled:
Add {{merged-from}} to talk page of target page. You can optionally enable the other one, and then click Submit. - To do it manually, place
{{Merged-to|DESTINATIONPAGE|April 2026}}atop the source's talk page.
- If you are using the easy-merge script, keep this option disabled:
- If the merge was not discussed at Articles for deletion, for example if it's a bold merge or it was discussed elsewhere, you can optionally add the {{merged-to}} tag to the source's talk page and the {{merged-from}} to the destination's talk page:
- (Optional) Fix any double redirects found at Special:WhatLinksHere. A bot does this automatically, but it may take a day or two.
If you've performed these optional steps, there's nothing else you can possibly do, besides improving the article further or merging another article!
When the merge is a result of a formal discussion at Articles for deletion, editors should not add a new banner to the destination's talk page or change the existing one (see the optional step 6b above). These AfD banners are usually added automatically by the closer and are updated automatically by AnomieBOT several hours after the merge is complete (example diff). These templates informs users involved in those pages that content is to be merged as a result of a deletion discussion. Note that it is any editors' job, not necessarily the closing editors' job, to perform the merge. If these templates have been changed, removed, or if they are not already on the talk pages, you can optionally place this atop the source article's talk page:
{{Afd-merge to |DESTINATIONPAGE |discuss=AFDDISCUSSION |date={{subst:CURRENTMONTHNAME}} {{subst:CURRENTYEAR}} }}
Similarly, you can place this template atop the destination's talk page:
{{Afd-merge from |SOURCEPAGE |discuss=AFDDISCUSSION |date={{subst:CURRENTMONTHNAME}} {{subst:CURRENTYEAR}} }}
Merging pages in non-article namespaces
Pages in certain other namespaces can also be merged, usually also on a bold basis, but merging on a consensus basis relies on different venues. For most non-article namespaces, the counterpart to AfD is MfD; unlike the former, it does not accept merge nominations, though a deletion discussion can yield "merge" as an alternative to deletion. Templates can be explicitly nominated for merging at TfD. The CfD process governs category merges; these fall entirely outside the scope of this page because “merging” categories is not merging in the usual sense (and is not done boldly either).
See also
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- Wikipedia:Proposed article mergers is a noticeboard for discussions about merging articles
- Category:Articles proposed for merging lists articles that have been nominated for merging but haven't reached consensus
- Category:Articles with consensus to merge lists articles with AfD discussions closed with consensus to merge.
- WikiProject Merge was used to coordinate the clearing of the merge backlog.
Merge templates
- {{Merge}}
- {{Merge to}}
- {{Merge from}}
- {{Being merged}}
- {{Merge portions from}}
- {{Cleanup merge}}
- {{Copied}}
- {{Merged-to}}
- {{Merged-from}}
- {{Old merge}}
- {{Duplication}}
Other guides
- Wikipedia:Splitting
- Wikipedia:Moving a page
- Wikipedia:Section move
- Wikipedia:Content forks, on duplicated content in acceptable and unacceptable cases
- Wikipedia:Copying within Wikipedia, more details on copyright issues
- Wikipedia:Merge and delete, on deleting the source article instead of redirecting
- Wikipedia:History merging, if they have not been edited in parallel, some merged articles may also be history merged
- Wikipedia:Articles for merging, a failed proposal for a different discussion process