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Online Developer Utility

Base64 Decoder

Decode Base64 to text or binary — with image preview when the payload is an image.

100% Browser-Based — code never uploads to our servers. All processing runs locally in your browser.

Tip: drag & drop a file onto this card, or use Upload / Import Example below.

Tool Options

Results

Results will appear here…

How It Works

Fast developer utilities that run entirely in your browser.

1
⎘

Paste or upload

Paste code/data or upload a file. Use Import Example to try instantly. Nothing is uploaded to our servers.

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2
⚙

Process in browser

All parsing and conversion runs locally in your browser — 100% client-side.

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3
⇩

Copy or download

Export results as TXT, JSON, CSV, or JS instantly.

Zero server upload — your data stays on your device.

About Base64 Decoder

Decode Base64 (including URL-safe) to text. Preview images, download decoded files — free browser tool. Built for developers, QA and SEO workflows with sample data, copy and multi-format export.

FAQs

No. All developer tools process your content in the browser. FreeConverter servers never receive your input.

Yes. FreeConverter.app online JS/JSON tools are free to use.

No account or installation is required.