Encoding & IDs

Encode, decode and generate the identifiers developers use every day — Base64, URL encoding, number bases, timestamps and UUIDs. Use Base64/URL encoders to make data transport-safe, the Base Converter for binary/hex/decimal, and the UUID Generator for unique keys.

6 free tools — no downloads, no sign-up.

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Base64 Encoder & Decoder

Encode and decode Base64 strings. Essential developer utility.

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HTML Entity Encoder & Decoder

Encode/decode HTML entities. XSS prevention.

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Number Base Converter

Binary, octal, decimal, hex. Real-time conversion.

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URL Encoder & Decoder

Encode/decode URL strings. Percent-encoding tool.

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UUID Generator

Generate UUID v4 identifiers. Browser crypto API.

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Unix Timestamp Converter

Convert Unix timestamps to dates and back. Bidirectional.
Related: Code & Build Helpers · Data Formats & Validation · Security & Network · All Developer & Data →

Frequently asked questions

Is Base64 encryption?

No. Base64 is an encoding, not encryption — it is reversible and provides no security.

What UUID versions are supported?

The generator produces standard random (v4) identifiers suitable for keys and references.

Can I convert a Unix timestamp to a date?

Yes, the Timestamp Converter turns Unix epoch values into human-readable dates and back.