JSON & XML Workbench AES Encryption Auth & JWT Time & Epoch JSON File Converter HTML/CSS/JS Studio

CLIENT-SIDE ENCRYPTION

AES Encryption & Decryption

Configure cipher mode, padding, key size, and encoding, then encrypt or decrypt text right in this tab — nothing is ever sent to a server.

SOURCE → CIPHER

AES Encryption

AES-128

Plaintext

Secret Key

Key Format

Plain Text Base64 Hex

Cipher Mode

Padding

IV (16 bytes)

IV Format

Plain Text Base64 Hex

Key Size

Output Format

Base64 Hex

Ciphertext Output

CIPHER → SOURCE

AES Decryption

AES-128

Encrypted Text

Encrypted Text Format

Base64 Hex

Secret Key used for encryption

Key Format

Plain Text Base64 Hex

Cipher Mode

Padding

IV used during encryption

IV Format

Plain Text Base64 Hex

Key Size

Output Format

Plain Text Base64

Decrypted Output

STRUCTURED DATA

JSON & XML Workbench

Validate, auto-repair, and beautify two documents side by side — explore either one as an expandable tree, then compare them to see exactly what changed.

DOCUMENT 1

Document 1

No input yet

Input Type

JSON XML

Input

Characters0

Lines0

Formatted Output

Text Tree

—

Copy

Compare

DOCUMENT 2

Document 2

No input yet

Input Type

JSON XML

Input

Characters0

Lines0

Formatted Output

Text Tree

—

AUTHENTICATION

Auth & JWT Tools

Decode and inspect JSON Web Tokens, build and sign new ones (HMAC), and generate Basic auth headers — all client-side.

Runs locally · no data leaves your browser

Decoder & Inspector Builder & Signer Auth Headers

PASTE TOKEN

Encoded JWT

Verify signature (HS256 / HS384 / HS512 only)

DECODED

Header & Payload

No token yet

Header

Payload

Issued at (iat)—

Expires (exp)—

SIGN A TOKEN

Header & Payload

Algorithm

Payload (JSON)

Secret

SIGNED TOKEN

Output

HTTP BASIC AUTH

Credentials

Username

Password

HEADER

Authorization Header

Base64 credentials only

DATES & TIMESTAMPS

Time & Epoch Tools

Convert Unix epoch timestamps to human-readable dates and back, and measure the difference between two moments in time.

Runs locally · no data leaves your browser

RIGHT NOW

Current Epoch Time

Live

Unix (seconds) —

Unix (milliseconds) —

EPOCH → HUMAN

Timestamp to Date

Epoch timestamp

Unit

Local time—

UTC—

ISO 8601—

Relative—

HUMAN → EPOCH

Date to Timestamp

Date & time (your local timezone)

Unix (seconds)—

Unix (ms)—

DURATION

Timestamp Difference Calculator

Human Date Unix Epoch

Start

End

Days—

Hours—

Minutes—

Seconds—

Pick a start and end date to see the difference.

STRUCTURED DATA

JSON Formatter

Paste JSON and it's auto-formatted and rendered as an expandable tree as you type — pop the output into full screen for a distraction-free view.

Runs locally · no data leaves your browser

RAW / FORMATTED

Formatted Output

No input yet

—

ENCODE / DECODE

File Converter

Convert between text, URL-encoding and Base64, images and PDFs to Base64 (and back), and transform JSON ⇄ CSV — all client-side.

Runs locally · no data leaves your browser

Text / URL / Base64 Image ⇄ Base64 PDF ⇄ Base64 JSON → CSV CSV → JSON

INPUT

Source Text

Base64 URL

OUTPUT

Result

IMAGE → BASE64

Choose an Image

Click to choose an image, or drag one here preview

Base64 output

BASE64 → IMAGE

Paste Base64 / Data URI

PDF → BASE64

Choose a PDF

Click to choose a PDF file, or drag one here

Base64 output

BASE64 → PDF

Paste Base64 / Data URI

INPUT

JSON

No input yet

Delimiter

Nested objects

Include header row

OUTPUT

CSV

Rows0

Columns0

Characters0

INPUT

CSV

No input yet

Delimiter

Output shape

Title column (for nested shape)

Root key (nested only)

First row is header Parse numbers

OUTPUT

JSON

Rows0

Columns0

Characters0

FRONTEND SANDBOX

HTML / CSS / JS Studio

Write HTML, CSS and JavaScript in a split view, run it in a live preview, read console output, and export the whole thing as one HTML file.

Runs locally · no data leaves your browser

SOURCE

Code

HTML

CSS

JavaScript

Preview

Console

Console output will appear here…