With the Substack post editor, there's a variety of things you can do with an image that's been added to a post. Note that many of these editing features are only available on the web post editor and not available on the app mobile editor.
Need to change the size of an image?
Once you add an image, click the black bars on the side of the image. This will size the image making it larger or smaller– whatever your preference.
To make your image full width, click on on the three dots in the top right corner and select "Set full width".
Need to add alt text to an image?
Click on the three dots in the top right corner of the image and select "Edit alt text".
Enter your text and click "OK".
Need to add a caption to an image?
Click on the three dots in the top right corner of the image and select "Edit caption".
The caption will appear at the bottom of the image for you to edit.
Need to add a link to an image?
Once you add an image and see a blue border around it, click on the Link icon in the toolbar or use the hot-key combo (command+K on Apple devices).
Enter the URL in the pop-up box and select "Link".
Need to add a watermark?
Click on the three dots in the top right corner of the image and select "Add watermark".
A preview of the image will appear with the options to change the opacity and size of your publication's logo on the image. Drag the logo to the desired position in the image and select "Save".
Need more advanced editing tools?
If you'd like more editing options, click on the three dots on the image and select from the following:
- Crop: Click on Crop to rotate, flip, scale, and resize the shape of the image.
- Filter: Select Filter to change your image to different colors such as Sepia and Mono.
- Finetune: Click on Finetune to change the brightness, exposure, clarity, and contrast of the image.
- Annotate: Select this option to add text, add shapes, and write on the image.
- Redact: To blur parts of the image, select Redact.