Base64 Encode / Decode
Free online Base64 encoder and decoder. Unicode-safe, supports URL-safe Base64, and runs 100% in your browser. Nothing is ever uploaded.
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
Click to choose an image or drag & drop it here Encoded on your device. Never uploaded.
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 HandyBrowserTools. 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.
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