Mastodon Photo Resizer

How to use the Mastodon Photo Resizer

Resize a photo or design to a practical working canvas, choose fit or crop, and download the result without uploading the source image to Caroush. The useful starting point for Mastodon is the reader: readers across federated servers with different local cultures and rules. Explain the subject clearly and choose the appropriate audience visibility before posting. Keep diagrams legible at feed size and describe their conclusion in alt text. Server upload limits can vary, so export a modest image and check the local composer.

1. 1

   Choose a source you can use

   Open a PNG, JPEG, or WebP image and check that you have the right to publish it. Start with enough resolution for the target size; enlarging a small source cannot recover missing detail. For Mastodon, a practical example is an accessible content template: include descriptive alt text with every example image.

2. 2

   Select the destination canvas

   Pick a labeled working preset or enter custom dimensions. A profile avatar, feed image, cover, and video thumbnail have different jobs, so choose the one you are preparing.

3. 3

   Compare fit and crop

   Fit preserves the full image with surrounding space; crop fills the canvas and can remove material near the edges. Inspect faces, text, and logos before exporting.

4. 4

   Download and check the final upload

   Choose a supported output format, download the image, and preview it in the platform. Add meaningful alt text there and inspect the actual crop on a phone. Keep diagrams legible at feed size and describe their conclusion in alt text. Server upload limits can vary, so export a modest image and check the local composer.