Questions or comments?
The eBird filter save tool allows a reviewer to extract the data from an eBird filter web page into a .csv file, which can be downloaded and then opened in a spreadsheet program.
The tool must be installed as a "bookmarklet". Bookmarklets are probably unfamiliar to most people but you can read about them on Wikipedia: https://en.wikipedia.org/wiki/Bookmarklet. You will have a bookmark for the tool; when you are on an eBird filter page, simply click the bookmark, and a link that says "Download spreadsheet" will be superimposed at the top of the page. Click on this link to download the .csv file, and then open the file in Excel or other spreadsheet program. To get rid of the link, simply reload the page.
Probably you have never installed a bookmarklet before, so take care to follow these instructions exactly.
First, here is the eBird filter saver bookmarklet link that you will be using. Don't click it yet!
RIGHT click on the bookmarklet link. Don't left click. On the right-click context menu select "Bookmark This Link". In the dialog that comes up, select the bookmark folder where you want the bookmark to go, and click Save. Go to an eBird filter page and try clicking on the new bookmark.
For Firefox on Android, the procedure is the same but substitute long-press for right-click. See below for more on Android.
RIGHT click on the bookmarklet link. Don't left click. On the right-click context menu select "Copy link address". This puts the bookmarklet in your clipboard; make sure that you do not copy anything different into your clipboard before completing the installation.
Open the Bookmarks manager by navigating from the three-dots menu, or by pressing Ctrl+Shift+O. In the Folders pane, select the Bookmarks bar or other bookmark folder where you want to put the bookmark, or create a new folder. The Organize pane will show the bookmarks, if any, in the selected folder. Right-click and select "Add page...". In the Name space, enter a name for the bookmark, perhaps "eBird filter saver". In the URL space, paste the bookmarklet from your clipboard either by pressing Ctrl+V or by right-clicking and selecting Paste. You will notice that the URL is very long and seemingly incomprehensible, and you may see the words "It looks like this page is not an eBird filter". This is correct. Press Enter and you are done. Go to an eBird filter page and try clicking on the new bookmark.
RIGHT click on the bookmarklet link. Don't left click. On the right-click context menu select "Add to reading list". Go to an eBird filter page. Find your reading list by clicking the Hub icon (fourth from right at the upper right), then clicking the reading list icon (second from left at top). You will see the bookmarklet there; click it.
The bookmarklet does not work in Internet Explorer. So far it has not seemed worthwhile to try to make special accommodations for this browser.
As noted above, you can install the bookmarklet directly to Firefox under Android. Firefox under iOS and Chrome under either Android or iOS appear not to provide any way to do it. Articles that I have found on the web indicate that it will work in all of these cases if you create the bookmarklet on Windows and synchronize your bookmarks; but I do not do that myself so cannot test. On either Android or iOS, you cannot just go to your bookmarks and tap the bookmarklet. Instead, you must type the bookmarklet name in the URL bar and enter it from there. For that reason you might like to rename the bookmarklet with a shorter name.
Macintosh is supposed to support bookmarklets but I have no way to test it. For Firefox and Chrome, it may well work exactly as described here for Windows. Google is your friend. Let me know your results.
In itself, downloading the filter data in this way may not be much more valuable than just saving the web page. However, the downloaded file has the advantage that it can be easily processed by another application. One such application is the eBird filter comparator, which compares two saved filter files and reports the differences.