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Encoder / Decoder

Converters

Encode and decode across URL, Base64, HTML entities, hex and ROT13 in one place.

What is Encoder / Decoder?

Encoder / Decoder handles the constant format-shifting of web testing — switch a string between URL encoding, Base64, HTML entities, hexadecimal and ROT13 without leaving the suite.

It is bidirectional and client-side, so encoding a payload or decoding a captured value is a single click.

Formats it supports

URL — percent-encode and decode (single and double).
Base64 — standard and URL-safe variants.
HTML entities — encode/decode for markup contexts.
Hex & ROT13 — quick conversions for obfuscation and CTFs.

Where it fits in your workflow

→Encode a payload to slip past input filters.
→Decode a Base64 or URL-encoded value captured in a request.

Use Encoder / Decoder

Free, in-browser — no sign-up needed to try.

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At a glance

CategoryConverters

RunsIn your browser

Token cost Free — no tokens

AccessFree · no login to try

Status● Live

Frequently asked questions

Can it chain encodings?

You can apply encodings in sequence (for example URL-encode a Base64 string) by feeding the output back through the tool.

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