Image to Base64 Converter
Convert Image to Base64 Online
Upload PNG, JPG, WebP, GIF, SVG, AVIF, or BMP images and copy clean Base64 output for HTML, CSS, Markdown, JSON, and API payloads.
Use a Data URL for direct embedding. Use Raw Base64 when an API or JSON field only needs the encoded image bytes. Base64 is best for small images and icons.
Drop images here to convert them to Base64
Files are encoded locally in your browser. Your images are not uploaded for conversion.
Click to browse or drag and drop image files. Multiple images are supported.
Prepare image first
Why Use This Image to Base64 Converter?
Many Base64 tools stop at one long string. FreeImage.top gives you developer-ready output, local privacy, and practical formats for real HTML, CSS, JSON, and API work.
More than raw Base64
Convert image to Base64 once, then copy the exact format you need: raw Base64, Data URI, HTML img, CSS background, Markdown, or JSON.
Private by design
Your image is encoded in the browser during normal use. The file does not need to leave your device just to create a Base64 image string.
Built for API and JSON workflows
Use Raw Base64 for payload fields, structured JSON for test data, and Data URLs when a preview or inline asset needs the full prefix.
CSS output that is ready to paste
Copy a simple background-image value or a complete CSS class, so small icons and embedded assets can move straight into a stylesheet.
Batch-friendly image handling
Drop multiple images, check each preview, and open the code panel only when you need the Base64 output for that specific file.
No hidden quality changes
This image Base64 converter reads the original bytes. It does not resize, compress, or redraw the file unless you choose another image tool first.
Common Image to Base64 Use Cases
Base64 images are most useful when a small asset needs to travel inside text instead of living as a separate file URL.
Inline icons and tiny UI assets
Use a Data URI for small icons, badges, placeholders, or one-off graphics that should stay inside an HTML file.
CSS prototypes and demos
Embed a small Base64 image in a stylesheet when you need a portable demo without managing separate asset paths.
API tests and request bodies
Paste Raw Base64 into a JSON payload, mock request, webhook test, or backend fixture when binary upload is not convenient.
Email and signature snippets
Use Base64 for small inline email graphics when a remote image URL is blocked, unavailable, or awkward to host.
Single-file HTML pages
Keep a prototype, documentation page, or local test case self-contained by embedding the image directly in the document.
Quick debugging and previews
Turn an image into Base64 quickly when you need to inspect a Data URL, reproduce a bug, or share a minimal example.
How to Convert an Image to Base64
Turn an image file into a raw Base64 string, full Data URL, HTML img tag, CSS snippet, Markdown image, or JSON object.
Upload one or more images
Drag and drop image files into the converter or click to choose files from your device.
Let the browser encode them
The converter reads each file locally and creates Base64 output automatically.
Open the code output
Choose Raw Base64, Data URI, HTML, CSS, full CSS, Markdown, or JSON from the output tabs.
Copy the format you need
Paste the result into your HTML, stylesheet, Markdown file, API request, JSON payload, or test fixture.
Image to Base64 FAQ
Answers to common questions about Base64 images, Data URLs, output formats, privacy, file size, and image quality.
What is an Image to Base64 converter?
An Image to Base64 converter turns image file bytes into text. The output can be used as raw Base64 or wrapped in a Data URL such as data:image/png;base64,... for HTML, CSS, Markdown, JSON, and API workflows.
Should I copy Raw Base64 or a Data URL?
Copy a Data URL when you want to paste the image directly into HTML, CSS, Markdown, or another display context. Copy Raw Base64 when an API field, JSON value, database column, or backend service only wants the encoded payload without the data:image/...;base64 prefix.
How do I use a Base64 image in HTML?
Open the Image tab and copy the generated HTML img tag, or copy the Data URI and place it in the src attribute of an img element.
How do I use a Base64 image in CSS?
Open the CSS tab for a background-image value, or use CSS (Full) for a complete class with width, height, background-size, and background-position.
Does converting an image to Base64 reduce file size?
No. Base64 usually makes the text output about one third larger than the original binary file. Use Image Compress first when file size is the main problem.
When should I use Base64 images?
Base64 is useful for small icons, email snippets, single-file prototypes, test fixtures, and API payloads where a normal image URL is inconvenient. Large photos and reusable site images are usually better served as normal image files.
Does Base64 change image quality?
No. This converter reads the original file bytes and encodes them as text. It does not resize, compress, redraw, or re-render the image.
Are my images uploaded to a server?
During normal use, images are encoded locally in your browser with the FileReader API. The conversion does not require uploading the image to a server.
Which image formats are supported?
The converter accepts browser-readable image files, including PNG, JPG, JPEG, WebP, GIF, SVG, AVIF, and BMP.
Why is my Base64 output so long?
Base64 is a text representation of the original image bytes, so larger images create longer strings. If payload length matters, resize or compress the image before converting it to Base64.