Convert images to Base64 encoded strings. Perfect for data URLs, inline images, and APIs. Fully client-side.
Click to upload
or drag and drop your image here
Supports JPG, PNG, GIF, WebP, SVG (Max 10MB)
background-image: url('data:image/jpeg;base64,...');<img src="data:image/png;base64,..." alt="Base64 Image">.logo {
background: url('data:image/svg+xml;base64,...');
}Note: Base64 strings are approximately 33% larger than the original binary file. Use for small images only.
Click anywhere in the red upload area or drag & drop your image file.
The browser converts the image to Base64 using FileReader API.
Click "Copy Base64" to copy the string to your clipboard for use.
Image to Base64 conversion is the process of encoding image files into Base64 text format, allowing images to be embedded directly into HTML, CSS, JavaScript, JSON, or other text-based formats. This encoding converts binary image data into ASCII text using 64 characters (A-Z, a-z, 0-9, +, /), making images safe to transmit over text-based protocols and easy to store in databases or include in code.
Developers and designers use image to Base64 conversion for embedding images in web pages without requiring separate file downloads, creating data URIs for inline images, storing images in databases as text, sending images through APIs as JSON payloads, and embedding images in email HTML. This approach eliminates the need for separate image hosting, reduces HTTP requests, and simplifies image management in applications.
Our free online image to Base64 converter makes this process instant and effortless—simply upload your image, and the tool automatically converts it to a Base64 string ready to copy and use. The converter works entirely in your browser using native JavaScript APIs, ensuring complete privacy and security—your images never leave your device.
Web developers frequently use Base64-encoded images to embed small images directly in HTML or CSS, eliminating the need for separate image files and reducing HTTP requests. This is especially useful for icons, logos, small graphics, and images that need to be included inline in stylesheets or HTML documents. Base64 images also work well for single-page applications and offline web apps where external image hosting isn't available.
APIs often require images to be sent as Base64-encoded strings in JSON payloads, as this simplifies data transmission and avoids file upload complexity. Converting images to Base64 allows developers to include image data directly in API requests, making it easier to send images through REST APIs, GraphQL mutations, or webhook payloads. This is essential for image upload APIs, profile picture updates, and any API that accepts image data.
Email clients often require images to be embedded as Base64-encoded data URIs to ensure images display correctly without requiring external image hosting. Converting images to Base64 allows email marketers and developers to create self-contained HTML emails that display images reliably across different email clients, even when external image hosting is blocked or unavailable. This ensures consistent email appearance and improves deliverability.
Databases and data storage systems sometimes store images as Base64-encoded strings to simplify storage and retrieval, especially in NoSQL databases or systems that prefer text-based storage. Converting images to Base64 allows you to store images directly in database columns, JSON documents, or configuration files, eliminating the need for separate file storage systems and simplifying data management.
JSON doesn't support binary data natively, so images must be encoded as Base64 strings to be included in JSON payloads. Converting images to Base64 allows developers to include image data in JSON responses, API payloads, configuration files, and any JSON-based data format. This is essential for APIs that return images, mobile app configurations, and any system that uses JSON for data exchange.
When debugging web applications, mobile apps, or API integrations, developers often need to test with Base64-encoded images to verify image handling, API responses, or data processing workflows. Converting images to Base64 allows developers to quickly create test data, verify image encoding/decoding logic, and test applications with embedded images without requiring external image hosting or file systems.
Click the upload area or drag and drop your image file directly into the converter. Supported formats include JPG, PNG, GIF, WebP, and SVG files up to 10MB. Once uploaded, the tool automatically begins processing your image to convert it to Base64 format. The conversion happens instantly using the browser's native FileReader API.
The converter automatically detects your image format and encodes it to Base64 using the browser's native FileReader API. The process converts binary image data into ASCII text format, creating a Base64 string that includes the data URL prefix (data:image/format;base64,). You can preview the image to verify it's correct before copying the Base64 string.
Once the conversion is complete, click the "Copy Base64" button to copy the entire Base64 string to your clipboard. The string includes the data URL prefix and can be used immediately in HTML, CSS, JavaScript, JSON, or any other text-based format. You can also manually select and copy the Base64 string from the text area if needed.
Paste the Base64 string directly into your HTML (as img src), CSS (as background-image url), JavaScript (as data URI), JSON (as string value), or any other file format that supports text. The Base64-encoded image will display correctly wherever you use it, eliminating the need for separate image files or external hosting. The conversion and encoding happen entirely in your browser, ensuring fast performance and complete privacy.
A web developer needs to embed a small logo image directly in their HTML without requiring a separate file download. The original image is a PNG file (logo.png, 5KB). By converting the image to Base64 using our converter, the developer gets a Base64 string like "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==". This string can be used directly in an HTML img tag: <img src="data:image/png;base64,..." alt="Logo">, eliminating the need for a separate image file and reducing HTTP requests.
Use case: Web development, inline images, reducing HTTP requests, offline web apps
An email marketer needs to create an HTML email with embedded images that display reliably across all email clients. The original image is a JPG file (banner.jpg, 50KB). By converting the image to Base64, the marketer gets a Base64 string that can be embedded directly in the email HTML: <img src="data:image/jpeg;base64,/9j/4AAQSkZJRg...">. This ensures the image displays correctly even when external image hosting is blocked, creating self-contained emails that work across all email clients.
Use case: Email marketing, HTML emails, reliable image display, email deliverability
A developer is building a REST API that accepts user profile pictures. The API requires images to be sent as Base64-encoded strings in JSON payloads. The original image is a PNG file (profile.png, 100KB). By converting the image to Base64, the developer gets a Base64 string that can be included in the JSON request:{"avatar": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg=="}. The API can then decode this Base64 string back to an image file for storage or processing.
Use case: API development, JSON payloads, image uploads, web services
Base64 is an encoding scheme that converts binary data (like images) into ASCII text format using 64 characters (A-Z, a-z, 0-9, +, /). This encoding allows binary data to be safely transmitted over text-based protocols like HTTP, email, or JSON. Base64-encoded images are commonly used in web development, APIs, email systems, and data storage where text-based formats are required. The encoding increases file size by approximately 33%, but makes data transmission and storage simpler.
Yes, our image to Base64 converter is completely free to use with no hidden fees, subscriptions, or premium tiers. There are no watermarks added to your Base64 strings, and you can convert as many images as you need without limitations. We believe in providing accessible tools for everyone, whether you're a professional developer, a student, or someone making a quick conversion for personal use.
Yes, our converter supports all major image formats including PNG, JPG (JPEG), GIF, WebP, and SVG. The tool automatically detects the image format and includes the correct data URL prefix in the Base64 string (data:image/png;base64, for PNG, data:image/jpeg;base64, for JPG, etc.). This ensures the Base64 string works correctly when used in HTML, CSS, or other applications that require format-specific data URIs.
No, your images are never uploaded to any server or stored anywhere. All conversion happens entirely in your browser using native JavaScript FileReader API, ensuring complete privacy and security. Your images never leave your device, and we don't store, save, or have access to any of your files. This makes our converter perfect for sensitive images, confidential data, or any situation where privacy is important.
Yes, Base64-encoded images are commonly used in APIs, especially REST APIs that accept images in JSON payloads. The converter creates Base64 strings with data URL prefixes that can be included directly in JSON requests or responses. Simply copy the Base64 string from the converter and include it in your API payload as a string value. Many APIs expect Base64-encoded images for image uploads, profile picture updates, and image processing endpoints.
Yes, our image to Base64 converter is fully responsive and works seamlessly on mobile devices, tablets, and desktop computers. The interface adapts to your screen size, and you can upload images directly from your mobile device's photo gallery. Touch-friendly controls make it easy to upload images, preview results, and copy Base64 strings on the go, making it perfect for developers and users working from mobile devices.
While our image to Base64 converter handles most conversion tasks seamlessly, there are a few limitations to be aware of:
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