When to use Base64-encoded images
Base64 data URLs let you embed small images directly in HTML or CSS without a separate file request, useful for icons, inline emails, and quick prototypes.
Image to Base64 Converter
Upload an image to instantly get its Base64-encoded data URL.
Upload file
PNG, JPEG, WebP, or GIF
How it works
- 1
Upload or drop a file into the drop zone.
- 2
Review the preview or extracted details shown on the page.
- 3
Download or copy outputs if the tool provides them; choose another file to start over.
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Your image is never uploaded — encoding happens entirely on your device.
- Works in any modern browser — no app install, no extension, no account.
How to use Image to Base64 Converter
In Image to Base64 Converter, add a file from your device. Processing stays in the browser for this tool; review what appears, then download or clear as needed.
Tips for better results
Use a representative sample file first. Very large files may be slower in-browser. Remove the file from the page when you finish if it is sensitive.
Privacy and offline-friendly processing
Whenever possible, Image to Base64 Converter processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Is there a file size limit?
There’s no hard limit, but very large images produce very long Base64 strings that are better served as regular files.
Which image formats are supported?
Any format your browser can read, including JPEG, PNG, WebP, GIF, and SVG.
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is Image to Base64 Converter free to use?
Yes. Image to Base64 Converter is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does Image to Base64 Converter work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.