Tampermonkey is web browser extension that allows adding JavaScript to any website in your browser and manipulate content of that website. It sounds scary and probably should, first you need to trust extension itself and then scripts that you install. Since extension itself has huge community and history, millions of installs across Chrome/Edge/Firefox extensions stores, 5 stars… Let’s assume we can trust it…

I wrote some time ago script that I want to share with everyone, it adds few buttons to website. Here is example how it looks like: Image showing new buttons added to website

On example of New York above buttons would take you to following websites:

  • PeWu nice and simple history view of changes on nodes, ways or relations
  • DeepHistory another history viewer, but in tabular view
  • Relation Analyzer helpful website for validating/analyzing relations
  • Overpass Opens Overpass at same viewport as currently seen on OSM website

It also adds different set of buttons linking to Achavi, OSMHV, OSMCha and OSM Lab websites when viewing changeset on website: Shows enriched OSM website

To install this extension in your browser go to and follow instructions…

Once you have it installed… You will want to install script that I wrote to do that:

Now go to or some changeset/node/way or relation and new buttons should show up.

You can give suggestions or report bugs either here or at

Happy mapping,


Comment from gileri on 10 November 2023 at 20:41

Hi, thank you for the script, it’s pretty useful !

Comment from JesseFTW on 11 November 2023 at 23:27

This looks delightful, I plan to install it soon. Thank you for writing it.

Comment from barefootstache on 18 November 2023 at 04:54

I would suggest sharing your code also with This will ease the installing process for users and will make it extension independent meaning that users can choose between TamperMonkey and GreaseMonkey.

Comment from danilax86 on 19 November 2023 at 12:50

Thank you!

Comment from 快乐的老鼠宝宝 on 20 November 2023 at 13:31

Have you considered uploading your code to Greasyfork? Because for TamperMonkey users, the js script ecology of this website is more concentrated.

Comment from dadavid on 20 November 2023 at 22:39

started using it yesterday after reading about it on weeklyosm, already sure i cant use without it anymore! :D

i’d love the addition of an osmcha link on a users profile with the filter pre-applied, like you are doing for changesets already.

But yeah, amazing work, thank you very much

Comment from dadavid on 21 November 2023 at 16:37

thank you again for the script, i edited to add an osmcha-filter-link on a users page.

Just add this after line 85 (a little ugly because of url encoding):

addButton("OSMCha", "" + regexResult[2] + "%22%2C%22value%22%3A%22" + regexResult[2] + "%22%7D%5D%7D");

Comment from DavidKarlas on 24 November 2023 at 09:52

Hi all, thank you for kind words… There was recent change on OSM website that shifted buttons a bit, hence I published new 0.3.1 version to address that. I also added @dadavid suggestion to add OSMCha for users…

I didn’t get around to checking out publishing on or… Will get to that at some point :P

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