How to Create an Image of Your Code with Showcode

Updated

Showcode (showcode.app) is a tool for turning source code into a presentable image. Paste your code in, adjust the appearance, and export the result as an image file. No design skills are required, and the output is a picture of your code — not runnable code. The steps below cover the basic workflow and the points where people most often get stuck.

What you need before you start

  • A code snippet you want to show. Keep it short enough to stay readable in an image; long files rarely work well as a single picture.
  • A browser. Showcode runs on the web, so there is nothing to install.
  • A rough idea of where the image will go (a slide, a README, a social post). That decides how much code fits and how large the text should be.

Step-by-step: from code to image

1. Open the editor and paste your code

Go to showcode.app and put your snippet into the code area. You can type it directly or paste it from your editor. The tool renders what you enter, so paste the exact code you want shown — including indentation, since that is part of what makes the image look right.

Expected result: your code appears in the preview with syntax highlighting applied.

2. Pick a language or let it be detected

Syntax highlighting depends on the language being set correctly. If the colors look wrong — keywords not highlighted, comments not dimmed — set the language explicitly rather than relying on auto-detection. This is the single most common cause of a snippet that looks "off."

3. Choose a theme and style

Select a color theme that matches where the image will live. A dark theme reads well on slides and social posts; a light theme fits documentation and print. Check contrast between the text and background at this stage, before you export — fixing it afterward means redoing the export.

4. Adjust the frame and layout

Set the padding, window controls, and background so the snippet sits comfortably in the frame. If your snippet has long lines, decide whether to wrap them or trim them; wrapped lines can be harder to read, but cut-off lines are worse.

5. Generate and export the image

Trigger the export and save the resulting image file. What you get is a static picture — it cannot be copied as code, run, or edited by the viewer. If you need the code to remain usable, share the snippet separately and use the image only as a visual.

Expected result: an image file on your machine that you can drop into a slide, document, or post.

Common snags and how to handle them

Problem Likely cause Fix
Colors look wrong Language not set correctly Set the language manually
Text too small to read Too much code in one image Split into several images or trim the snippet
Lines cut off at the edge Long lines with no wrapping Enable wrapping or shorten the lines
Image looks cramped Padding too small Increase the frame padding
Image clashes with the page Theme chosen without checking the background Switch to a light or dark theme to match

When Showcode is the right choice

Use it when you need a clean, self-contained visual of a snippet and you do not want to open a design tool. It suits slides, documentation, tutorials, and social posts where the code is meant to be read, not executed.

Skip it when the viewer needs to copy or run the code — an image cannot do that. In those cases, share the snippet as text and use the image only as a companion visual.