Base64 Image Generator
Generate base64 placeholder images by pixel dimensions
Free online tool to generate base64 encoded placeholder images. Create custom-sized placeholder images instantly with specified width and height in pixels. Perfect for development and testing. All processing happens in your browser.
How to generate a base64 image?
Creating a base64 placeholder image is simple:
- Enter the desired width and height in pixels.
- Choose background color and text color (optional).
- Enter custom text to display on the image (optional).
- Click 'Generate Base64 Image' to create the image.
- Copy the base64 string or download the image.
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What is a base64 image?
Base64 is an encoding scheme that converts binary data (like images) into ASCII text format. Base64 images can be embedded directly in HTML, CSS, or JavaScript without needing separate image files. This is useful for small images, placeholders, or when you want to reduce HTTP requests.
Why use base64 placeholder images?
Base64 placeholder images are incredibly useful for web development. They eliminate the need for external image hosting, reduce HTTP requests, work offline, and are perfect for prototyping and testing layouts before final images are ready.
Use cases for base64 image generator
- Development: Create placeholder images quickly during development.
- Testing: Test layouts with different image dimensions without finding actual images.
- Prototyping: Build mockups and prototypes faster.
- Offline work: Generate images without internet connection.
- Performance: Embed small images directly in code to reduce requests.
- Email templates: Use base64 images in HTML emails for better compatibility.
Frequently Asked Questions (FAQs)
What is base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's commonly used to embed images and other binary files directly in text-based formats like HTML, CSS, or JSON.
Can I use base64 images in production?
Base64 images are best for small images (under 10KB typically). For larger images, regular image files are more efficient. Base64 increases file size by about 33% compared to binary format.
What's the maximum size I can generate?
You can generate images of any reasonable size. However, very large base64 strings may cause performance issues. We recommend keeping dimensions under 2000x2000 pixels for optimal performance.