Does this tool support unpadded Base64?

Yes. You can generate output without trailing = padding and still decode padded or unpadded input.

Is my data sent to a backend?

No. Encoding and decoding run fully in your browser.

Technology

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Base64 Encoder & Decoder

Convert plain text and Base64 payloads in either direction with URL-safe toggles and quick copy workflows.

Last updated: March 13, 2026

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Interactive tool

The live form, validation, and result state for Base64 Encoder & Decoder load after the page scripts run. The content below summarizes how the tool works and links to related pages in the catalog.

Encode plain text to Base64 or decode Base64 back to text with optional URL-safe output and padding controls.

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How to use Base64 Encoder & Decoder

1
Enter your inputs into the Base64 Encoder & Decoder form.
2
Adjust optional settings so the scenario matches your real-world case.
3
Review the result, then tweak one variable at a time to compare outcomes.
4
Keep your best scenario as a baseline for future decisions.

Technical utilities provide rapid validation checks and should be paired with environment-specific testing.

Best use cases

Quickly evaluate base64 encoder decisions without switching tools.

Validate technical values and ranges before deployment changes.

Run fast network or data utility checks without external services.

Compare alternate configuration choices during troubleshooting.

How it works

Encode plain text to Base64 or decode Base64 back to text with optional URL-safe output and padding controls.

base64 encoderbase64 decoderurl safe base64encode text to base64decode base64 online

FAQ

URL-safe Base64 replaces + with - and / with _, so the output can be used in URLs and tokens with fewer escaping issues.

Tips for better results

Double-check formats, units, and boundary values.
Test a known example first to confirm expected behavior.
Use outputs as a quick check before production changes.

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