Decoder Tools

TOTP Code Generator

Paste a Base32 secret — live 6-digit HMAC-SHA1 code with countdown. Nothing stored.

Base32 Secret0 chars

SHA‑1 · 6 digits · 30 swaiting

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Next code in

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Counter

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Unix time

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Base64

Encode plain text to Base64 (RFC 4648) or decode back. Handles Unicode (UTF-8).

Plain text0 chars

Base64 output

Output will appear here

URL Encoder / Decoder

Percent-encode or decode. Choose Component (encodes everything) or Full URL (preserves :/?#[] structure).

Input0 chars

Encoded output

Output will appear here

JSON Formatter

Validate, pretty-print, or minify JSON. Errors show exact line and column.

JSON input0 chars

Output

Output will appear here

JWT Decoder

Inspect header, payload, and expiry. Signature is decoded but not verified.

Token

Header

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Paste a token above

Payload

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Signature

Not verified

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Hash Generator

SHA-1, SHA-256, and SHA-512 digests. Type text or drop a file.

Drop a file here to hash it

Text input0 chars

SHA-1160 bit · 40 hex chars

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SHA-256256 bit · 64 hex chars

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SHA-512512 bit · 128 hex chars

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Hex Converter

Convert text to hex bytes or decode hex back to text. Choose display format below.

Text input0 chars

Hex output

Output will appear here

HTML Entities

Encode special characters to HTML entities, or decode them back. Click a reference entry to insert it.

Input0 chars

Encoded output

Output will appear here

Common entities — click to copy

Regex Tester

Test regular expressions live. Matches are highlighted; groups shown in the match list.

Pattern

Test string

Highlighted matches

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Text Diff

Line-by-line comparison of two texts. Green = added, red = removed.

Original (A) Modified (B)

Paste text in both fields above

Color Converter

Enter a color in any format — HEX, rgb(), or hsl(). See and copy all formats instantly.

Color value

Enter a color above

HEX—

RGB—

HSL—

oklch—

Red

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Green

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Blue

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Hue

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UUID Generator

Generate RFC 4122 version 4 UUIDs using cryptographically random bytes.

Click generate above

Validate / inspect a UUID

Paste a UUID to inspect it

Unix Timestamp

Convert between Unix epoch seconds and human-readable dates. Local and UTC.

Current timestamp

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Timestamp → Date

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Date → Timestamp

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UTC

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Local

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Relative

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