Base64 Encode / Decode
Free online Base64 encoder and decoder.
Image to Base64
Drop an image to get its Base64 data URI, plus ready-to-paste HTML <img> and CSS background-image snippets. Everything is generated locally.
Private by default: processing stays on your device
YOUR IMAGE
Start with your image
Drop your image here or browse files 8 MB OR SMALLER
Image, as text.
A data URI, an <img> tag, and a CSS rule — ready to paste.
Good to know
Base64 is ~37% larger than the file. Only embed small images; link larger ones normally. Files over 8 MB are refused — Image Compressor can slim them down first.
These buttons share the page link, not your input.
Want to include your text?
Your current input will be stored in the link after the # symbol, not uploaded to Handy Browser Tools. Anyone with this link can read that text. If you send or post it, the service you choose also receives the link. Do not include passwords or private information.
Frequently asked questions
When should I embed images as Base64?
For small images (icons, logos under ~10 KB) where saving an HTTP request matters, such as emails, single-file HTML pages, or CSS sprites. For larger images, a normal file is better because Base64 adds ~33% size overhead.
Why is the Base64 string bigger than my file?
Base64 encodes 3 bytes into 4 characters, so output is about 133% of the original size. The exact sizes are shown after conversion.
Is my image uploaded?
No, the file is read and encoded entirely in your browser.
Related tools
Image Compressor
Free browser image compressor for JPEG, PNG and WebP.
Favicon Generator
Generate a favicon.ico plus all standard PNG icon sizes (16-512px) in your browser, then download the whole pack as one ZIP.