Is Base64Img private?
Yes. All conversions run locally in your browser. Files and pasted Base64 values are not uploaded to our server.
Base64 Image Decode & Encode
Private browser-based Base64 tools.
Runs locally in your browser
Input
Output
Do not execute decoded files from untrusted sources.
Input
Click (or tap) here to select a file
You can also drop an image here or paste from clipboard
Output
A complete Base64 workspace
Encode images, text, documents, audio, video, and arbitrary files. Decode Base64 back to a preview or downloadable file, then validate, normalize, or convert it for URL-safe use.
Private by design
Conversions run with browser APIs on this device. Files and pasted Base64 values are not sent to our server, so the tool is fast and suitable for sensitive local workflows.
Outputs developers can use
Generate plain Base64, Data URLs, HTML image tags, CSS backgrounds, JSON objects, Markdown images, and embedded favicon markup without manually assembling prefixes.
Frequently asked questions
What is the Base64 size overhead?
Base64 output is about 33% larger than the original binary data because every three bytes become four text characters.
What formats are supported?
PNG, JPG, GIF, WebP, SVG, and other browser-readable formats. Base64, Base64URL, and Data URLs are supported for input and output.