Generic dezoomer tutorial

The generic dezoomer can be used to download images that are in formats not yet supported by dezoomify.

How to use dezoomify's generic dezoomer ?

Creating the dezoomify generic dezoomer URL template

1. While on the webpage you want to extract an image from, open your browser's developer tools.

2. Inside the developer tools, open the network inspector.

On firefox, you can open the network inspector directly:

3. Zoom on the image until you reach the maximal zoom level. While you zoom and pan into the image, new lines should appear in the network inspector: one line for each tile of the image that is displayed. Their type should be jpeg of png.

4. Right-click on one of the latest lines that should have appeared in the network inspector and choose copy link address.

5. Paste the URL you copied into dezoomify. The URL you pasted should contain parameters. Often, they take the form of an ampersand (&), followed by a name, followed by an equal sign (=), followed by a value. They can also just be numbers around the end of the URL. You will have to guess which of the parameters is for the x coordinate, and which is for the y coordinate. Usually, their names are quite explicit, such as x and y. Once you found them, change their values (the number after the = and before the next &) with {{X}} and {{Y}} respectively.

   • For instance, if the original URL was http://example.com/tiles?x=34&y=75, change it to http://example.com/tiles?x={{X}}&y={{Y}}.
   • If the original URL was http://example.com/my_image/tile_34_75.jpg, change it to http://example.com/my_image/tile_{{X}}_{{Y}}.jpg
   • If the numbers are zero-padded, you can add a colon, then a 0, then the padding width after the coordinate. For instance, if the first tile number is 001 instead of 1, use {{X:03}} and {{Y:03}}. So, for http://example.com/my_image/tile_0034_0075.jpg, use the template http://example.com/my_image/tile_{{X:04}}_{{Y:04}}.jpg.

6. Click submit.
7. Once the image is fully downloaded (this can take several minutes), right-click on it and choose Save as.

The template URL you created at step 5 should also work with dezoomify-rs. This can be useful when the image is too large to be dezoomed in a web browser.