How to use Base64 Validator
- Drop your text or data into the field at the top of Base64 Validator.
- Base64 Validator updates the output automatically as you type.
- Finish by choosing Copy to take the output with you.
About this tool
There is no server behind Base64 Validator. Base64 Validator converts between raw data and Base64 in your browser, handling text or files locally.
Because it runs locally, even sensitive payloads never leave the page. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.
Frequently asked questions
What is Base64 Validator for?
Base64 Validator lets you validate your input right in the browser, with the result shown instantly and nothing uploaded.
Does Base64 Validator cost anything?
No — Base64 Validator is completely free, with no sign-up and no hidden limits.
Does Base64 Validator upload my data?
No — Base64 Validator processes everything locally in your browser, so nothing you enter is uploaded or stored.
Is Base64 in Base64 Validator URL-safe?
Base64 Validator uses standard Base64 by default and runs locally, so your data is never sent anywhere.
Does Base64 Validator work on mobile?
Yes — Base64 Validator is just a web page and runs on any modern browser, including phones and tablets.