Images uploaded to Blogger can be served with several transform options by updating the URL path parameters in the image URL. Common transformation are resizing, scaling, and cropping.
These parameters are mostly found in post thumbnails, gadgets images (such as blog header images), and blog account photo in the comment section.
Here'a an image from a decade ago that we will use as an example:
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| A screenshot resized to 320px wide for preview. |
The original sized image URL is shown below:
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjn3ABzKeFJqPYt7aVQv4_LksiFnyGDKrH_07TpYe__Yrg63mnX7Ad1_vhcTclnumBV4Rt_I_zv5mRZurV1x5aXsMmGBr27kxMsBRC8muabfX_TStP_SjKnzHvqoXzfBzIItIipIwk-vM7r/s0/11960_original.jpgPay attention to the last part of the URL. The s0 part is a transform option for no scaling.
.../s0/11960_original.jpgSo the format is:
<image_url>/<transform_options>/<file_name>Now that you know where the parameter is, we can continue to see what options are available.
Scaling
Example transform options:
s0: No scaling.s120: Scale to 120px width, auto height.w120: Resize to 120px width, auto height.h120: Resize to 120px height, auto width.
Example images:
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Transform option: s120 |
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Transform option: h120 |
The transformed image dimension is capped to the original image dimension.
Using Multiple Transform Options
Several transfrom options can only take effect when used together with another transform option. Use hyphen (-) to apply multiple transform options:
<transform_option_1>-<transform_option_2>-<etc.>Cropping
Crop the excess portion of the image. Used together with the scaling transform option.
c: Rectangular cropcc: Circular crop
Examples:
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Transform option: s100-c |
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Transform option: s100-cc |
Rotation
Rotate image by 90, 180, or 270 degrees, clockwise.
r90: Rotate by 90 degrees.r180: Rotate by 180 degrees.r270: Rotate by 270 degrees.
Example:
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Transform option: s200-r90 |
Appendix
Additional transform options:
rj: Serve GIF in video format.
Related links:
https://www.blogger.com/rpc_relay.html https://www.blogger.com/comment/frame/220561901913020919?po=8609312344036415069&hl=en&saa=85391&origin=https://xmlexpr.blogspot.com&skin=contempo https://xmlexpr.blogspot.com/2025/09/blogger-image-transformation.html#comments https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjn3ABzKeFJqPYt7aVQv4_LksiFnyGDKrH_07TpYe__Yrg63mnX7Ad1_vhcTclnumBV4Rt_I_zv5mRZurV1x5aXsMmGBr27kxMsBRC8muabfX_TStP_SjKnzHvqoXzfBzIItIipIwk-vM7r/s72-c/11960_original.jpg true ["blogger-features"]