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Convert standard Base64, URL-safe Base64, and text payloads.
About this tool
Convert standard Base64, URL-safe Base64, and text payloads.
Base64 URL Converter is a free developer tool that runs entirely in your browser — nothing to install, no account to create, and your data never leaves your device. Open the page, add your input, and get a clean, copy-ready result in seconds.
Open Base64 URL Converter on AltFTool — it loads instantly in your browser.
Paste or upload your source content.
Choose the target format or conversion mode.
Copy or download the converted result.
Move text, files, or encoded data into exactly the format your workflow expects — no desktop software needed.
Preview the converted result so you catch issues before it reaches an app, document, or message.
Every output is one click away from being copied, downloaded, or dropped into your next task.
Yes — Base64 URL Converter is completely free on AltFTool, with no signup, no trial limits, and no hidden costs.
Yes. Base64 URL Converter runs in your browser, so what you enter or upload stays on your device instead of being sent to a server.
Convert standard Base64, URL-safe Base64, and text payloads. It's built for quick, everyday developer tasks with results you can copy or download straight away.
Yes — Base64 URL Converter works in any modern browser, on desktop, tablet, and mobile, with the same features everywhere.