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 websites, emails, Markdown files, JSON fields, API payloads, and test fixtures.
Use a Data URL when you want to embed the image directly in HTML, CSS, or Markdown. Use Raw Base64 when an API, database field, or JSON value only needs the encoded image bytes. Base64 works best for small images and icons.
Drop images here to convert them to Base64
Your files are encoded locally in your browser. The image to Base64 conversion does not upload your images.
Click to browse or drag and drop image files. Batch image to Base64 conversion is supported.
Prepare image first
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How to Convert an Image to Base64
Use this image to Base64 converter to 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 PNG, JPG, WebP, GIF, SVG, AVIF, or BMP files from your device.
Let the browser encode them
The converter reads each image locally in your browser 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.
Why Use This Image to Base64 Converter?
Use this converter when you already know where the Base64 string needs to go, but you do not want to hand-build the prefix, escape JSON, or guess which format an API expects.
Choose Raw Base64 or a full Data URL
APIs and database fields often want only the encoded bytes, while HTML, CSS, and Markdown usually need the data:image/...;base64 prefix. Both versions are ready to copy.
Convert local files without uploading them
The browser reads the image on your device and creates the Base64 text locally, which is useful for private screenshots, internal UI assets, and files you cannot send to a random server.
Paste into JSON without fixing quotes by hand
Use the JSON output when you need a sample request body, mock response, webhook payload, or test fixture and want the image string wrapped safely.
Get copyable snippets for real targets
Copy an img tag, CSS background-image, full CSS class, Markdown image, raw string, or JSON object instead of converting the same file again in another tool.
Handle a group of small assets at once
Drop multiple icons, badges, placeholders, or fixture images and copy only the output you need for each file.
Keep the original image bytes
Base64 is an encoding step, not compression. This tool does not resize, redraw, or change quality, so the output represents the original file.
Common Image to Base64 Use Cases
Base64 is most useful when an image has to live inside text, such as HTML, CSS, Markdown, JSON, or a request body. It is usually a poor fit for large photos and reusable production assets.
Small icons in single-file HTML
Embed a logo mark, status icon, badge, or tiny placeholder when a demo, bug report, or local HTML file needs to work without an assets folder.
CSS backgrounds for portable prototypes
Use a Data URL in background-image when you are sharing a CodePen, documentation snippet, or prototype and broken relative image paths would get in the way.
JSON API fields that expect image text
Paste Raw Base64 into an API request, webhook test, seed file, or automated test when multipart upload is unavailable or harder to reproduce.
Email experiments with client caveats
Test small inline email graphics when hosting is inconvenient, but check the target clients first because some email apps and security filters block Base64 images.
Markdown and documentation examples
Keep a README draft, support note, or internal guide self-contained when a small image needs to travel with the text.
Debugging broken Data URLs
Compare raw strings and full Data URLs when an image preview fails because the prefix is missing, the MIME type is wrong, or the payload was copied into the wrong field.
Image to Base64 FAQ
Short answers about Raw Base64, Data URLs, file size, privacy, broken previews, APIs, and when Base64 is the right choice.
Should I use Raw Base64 or a Data URL?
Copy a Data URL for HTML, CSS, Markdown, or browser previews because it includes the data:image/...;base64, prefix. Copy Raw Base64 only when an API, database field, or backend service asks for the encoded image string without that prefix.
Why is my Base64 image not showing?
Most display problems come from pasting Raw Base64 where a Data URL is required. Check that the value starts with data:image/...;base64,, the MIME type matches the image, the string was not truncated, and quotes are escaped correctly inside JSON.
Does converting an image to Base64 make it smaller?
No. Base64 is encoding, not compression. It usually makes the text output about one third larger than the original file. If size matters, compress or resize the image before converting it to Base64.
When is Base64 better than a normal image URL?
Use Base64 for small icons, tiny placeholders, portable HTML demos, CSS snippets, Markdown examples, API tests, and fixtures. For large photos, banners, or reusable website assets, a normal image file is usually better because it can be cached separately.
Are my images uploaded when I convert them?
No. During normal use, this image to Base64 converter reads files locally in your browser with the FileReader API. The conversion does not require sending your selected image files to a server.
Does Base64 change image quality, dimensions, or transparency?
No. Base64 keeps the original image bytes encoded as text. It does not resize, compress, redraw, or remove transparency. If the copied string is complete, decoding it gives back the original image bytes.
How should I send a Base64 image in JSON or an API request?
Follow the API documentation. If the field asks for base64, use Raw Base64. If it asks for a data URI, image URL, or inline browser-displayable value, use the full Data URL. Use the JSON tab when you want a safely quoted example object.
Can I use Base64 images in email?
Only for careful testing. Some email clients and security filters block or strip Base64 Data URL images, so hosted image URLs are usually more reliable for production email.
Need Another Base64 Image?
Return to the converter and encode your next image into the exact format you need, from Raw Base64 to ready-to-paste code snippets.