Typical Use Cases

When would you need this?

Tech Blogs & Articles: Pasting raw code in tutorials or technical posts can look dull. Use this tool to generate a syntax-highlighted, themed screenshot that makes your code pop and easy for readers to understand.
Social Media Sharing: Whether you're showing off a fun Python script or a cool CSS effect on Twitter, Facebook, or LinkedIn, a beautiful screenshot grabs much more attention than plain text.
Interviews & Portfolios: When you need to showcase code snippets in your resume or GitHub Readme, a clean, professional screenshot elevates your presentation.

Step-by-Step Example

Let's try this out with some real Python code. Suppose you want to share a script that plots a sine wave using matplotlib.

Step 1: Paste your code
Paste the following code into the "Code Content" input box:

import numpy as np
import matplotlib.pyplot as plt

x = np.linspace(0, 2*np.pi, 100)
y = np.sin(x)
plt.plot(x, y)
plt.title('Sine Wave')
plt.show()

Step 2: Select the programming language
Click the "Language" dropdown menu and select "Python". The tool will automatically recognize the syntax and apply highlighting.

Step 3: Choose a theme
From the "Theme" dropdown, let's select "Monokai Pro". This is a popular dark theme that looks great for code presentation.

Step 4: Adjust the appearance
· Font Size: Keep the default 14px
· Background Color: Keep the theme default (dark gray)
· Show Line Numbers: Toggle the switch to "Yes"
· Border Radius: Set to 12px for softer edges

Step 5: Generate and save
Click the "Generate Screenshot" button. The tool will render a real-time preview on the right. You'll see the highlighted code, clear line numbers, gradient background, and rounded corners. Once you're satisfied, click "Download PNG" to save a high-res screenshot (around 800x400) to your device.

Interpreting the Result: The generated image automatically adapts its width to the code length and its height to the number of lines. In our screenshot, the code runs from lines 1 to 7, separated by a gray vertical line on the left. Keywords (like import) appear in purple, function names (like np.linspace) in blue, and strings in green. The overall visual is crisp and ready to be used as a blog illustration.

Understanding the Output

The tool outputs a PNG image that you can preview directly. Keep a few key points in mind:

Code Visibility: If your code has too many lines (e.g., over 50), the screenshot will be very long. We recommend capturing only the most critical parts.
Theme Contrast: Dark themes (like Monokai or Dracula) look best on light-background pages, while light themes (like GitHub Light) are ideal for dark-mode pages.
Font Size & Readability: 14px to 16px is the most comfortable range. Too small (<12px) will look blurry on mobile, and too large (>20px) might cause a single line of code to overflow the screen.
Borders & Shadows: Adding a subtle shadow (e.g., 4px offset, 8px blur) gives the screenshot a "floating" effect, but overly heavy shadows can be distracting.

Common Mistakes & Pitfalls

Ignoring Language Selection: If you don't select a programming language after pasting your code, the tool can't highlight keywords. It will look like plain text, defeating the purpose of beautification. Always remember to select the language manually.
Double Line Numbers: If the code you copied already includes line numbers from your editor, do not check "Show Line Numbers." Otherwise, you'll end up with two sets of numbers, which looks messy.
Oversized Fonts Causing Overflow: When previewing in a narrow window, a font size that's too large might push code lines past the right edge (forcing a line break). Our tool wraps text automatically, but this breaks code indentation. We recommend reducing the font size or manually adjusting the code length.
Forgetting to Remove Sensitive Info: Your code might contain API keys, local file paths, usernames, or other sensitive data. Always double-check and redact these before generating the image.
Sticking to the Default Theme: Different languages look better with different color schemes. For example, JSON pairs well with Solarized Light, while Python looks great in Monokai. Try out a few themes to find the most visually appealing one.

Frequently Asked Questions (FAQ)

Q1: What programming languages does this tool support?
A: We have built-in syntax highlighting for over 30 languages, including Python, JavaScript, TypeScript, Java, HTML/CSS, C++, Go, Rust, SQL, and more. If your language isn't listed, it might be a niche language; we recommend using the "Plain Text" mode in that case.

Q2: Can the generated image have a transparent background?
A: Yes. Select the "Transparent" option in the "Background Color" settings (or enter #00000000), and the background will become transparent, making it easy to overlay on other backgrounds. Note that transparent backgrounds might make code hard to read in dark mode, so pair it with a light theme.

Q3: How can I add a watermark to the screenshot?
A: Our tool does not add watermarks. If you need to protect your copyright, you can add a text watermark using other image editing tools after generating the screenshot. We recommend simply adding a small logo to the corner of the image.

Q4: Can I set a fixed size for the screenshot?
A: Currently, the tool uses an adaptive size, automatically generating the optimal width and height based on the code length and number of lines. If you need a uniform size (like 800x600), you can crop or scale the image using image editing software after downloading.

Q5: Can I use this on a mobile device?
A: Yes. Our page is mobile-responsive. However, because there is a lot of code input and multiple options, the experience is generally better on a tablet or desktop. Mobile browsers can still generate and download images without any issues.

Important Notes

Code Length Limits: We recommend keeping pasted code under 100 lines or 10KB per use. Exceeding this may cause truncation or rendering lag.
Missing Fonts: If you select a font that isn't installed on your system (like Fira Code), the tool will fall back to a default monospace font. We recommend using the built-in "JetBrains Mono" or "Source Code Pro".
Browser Compatibility: This tool is built on HTML5 Canvas. Please use the latest version of Chrome, Firefox, Edge, or Safari. Older versions of IE are not supported.
Copyright Disclaimer: You are solely responsible for the content of the generated

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