Image to Base64
FreeConvert image to Base64 encoded string
About Image to Base64
Developers often need an image embedded directly inside code, CSS or a JSON payload instead of linked as a separate file. Converting an image to a Base64 string turns it into plain text you can paste straight into your project.
Upload any image and get its Base64-encoded string ready to copy. This is handy for inline data URIs, small icons in stylesheets, or sending images through text-only APIs. The encoding happens in your browser, so your image never leaves your device, and nothing is stored once you close the tab.
Common uses
- Embedding small icons directly in CSS or HTML with data URIs
- Including images inside JSON or API requests as text
- Avoiding extra HTTP requests for tiny graphics
- Storing image data in config files or databases as a string
How to use
- 1
Upload your file
Click the upload area or drag & drop your file. Supports *. Up to 50 MB.
- 2
Click "Process — Image to Base64"
Click the process button. Your file is converted instantly on our secure servers.
- 3
Download your result
Preview and download your converted file. No watermarks, no quality loss, no expiry.
Base64 Data URL encodes images as text strings — embed directly in HTML, CSS, or JSON without separate file requests.
Why ToolHub?
- 100% Free — no hidden costs, no subscriptions
- No signup or account required
- Works in your browser — no software to install
- Privacy first — files processed and deleted immediately
- Batch conversion — convert multiple files at once
- High quality output — no watermarks, no quality loss
- Supports 30+ input formats including RAW, HEIC, BMP, TGA
- Lightning fast — most conversions complete in under 5 seconds
FAQ
What is a Base64 image string used for?
It lets you embed an image directly in code or text as a data URI, so you don't need a separate image file or URL.
Does Base64 make the image bigger?
Yes. Base64 encoding increases the data size by roughly 33 percent, so it's best for small images, not large photos.
Is my image uploaded to a server?
No. The encoding runs in your browser, so the image data stays on your own device.
Can I use Image to Base64 on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.