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Developer Tools

Professional toolkit · JWT · JSON · Hash · Security · Web — 100% offline

● Client-side only · Nothing leaves your browser

Paste JWT Token

Decode Clear Example

HeaderCopy

PayloadCopy

Claims Overview

Paste JSON

→ CSV → YAML Beautify Minify Clear Example

Output

Copy Download

Text / Base64

Encode Decode Clear

ResultCopy

URL Encode / Decode

Encode Decode Clear

ResultCopy

Unix Timestamp Converter

Unix Timestamp

Human Date

Timestamp → Date Now → Timestamp Load Current

Live Current Time

Unix (seconds)

—

UTC / Local

—

Copy Unix Refresh

UUID Generator

Click Generate

Generate UUID v4 Copy

SHA-256 Hash

Generate SHA-256 Clear

Hash ResultCopy

Password Generator

Click Generate

16 chars 24 chars 32 chars Copy

Text / JSON Diff

Original (A)

Modified (B)

Compare Clear

Diff Result

Regex Tester

Regular Expression

Flags (optional)

Test String

Test Regex Clear

Matches

Image Tools

Upload images to create thumbnails or compress them. Everything runs in your browser — no upload.

🖼️

Click or drop images here

JPG, PNG, WebP • Multiple files supported

Clear All

Create Thumbnails

Max size (pixels)

100px 150px 300px 500px

Generate Thumbnails

Compress Image

Quality (1–100)

40% 60% 80%

Max width (optional, 0 = keep original)

Compress Images

Text Statistics

Chars0

Words0

Lines0

Sentences0

Reading0 min

Case Converter

UPPER lower Title Case camelCase snake_case kebab-case slug

ResultCopy

—

Lorem Ipsum Generator

Paragraphs

Type ParagraphsSentencesWords

Generate Copy

Clean / Transform

Trim spaces Collapse spaces Remove empty lines Reverse Remove numbers Remove punctuation

ResultCopy

SQL Formatter (basic)

Format SQL Copy

Cron Expression Helper

Cron (5 fields: min hour day month weekday)

Explain Daily midnight Weekdays 9am Every 15 min

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JWT Builder (unsigned demo)

Header JSON {"alg":"none","typ":"JWT"}

Payload JSON {"sub":"123","name":"Dev","iat":1516239022}

Build token Copy

—

Unsigned only — for learning / local testing, not production auth.

Hash Suite

SHA-256 + SHA-1 + MD5-style Copy

Meta Tags Generator

Page title

Canonical URL

Description

Image URL (OG)

Generate Copy

robots.txt Generator

Sitemap URL

Allow all Block all Copy

.htaccess Redirect

From path

To URL

Generate 301 Copy

Email / URL Validators

Email

—

URL

—

Unit Converter

Bytes

Result

—

°C

°F

CSV → JSON

Convert Copy

JSON Path / Key Finder

Key to find

Find key Flatten keys Copy

List Tools

Add prefix Add suffix Number lines Join CSV Wrap quotes

Prefix / Suffix

Result

XML Prettify / Minify

Beautify Minify Copy

Password Strength Checker

—

HMAC-SHA256 (Web Crypto)

Message

Secret key

Compute HMAC Copy

—

Luhn Check (Card / IMEI style)

—

Secure Token Generator

Bytes

Format HexBase64Base64 URL

Generate Copy

—

Fake Data Generator

User profile Company Address Product Copy

UUID Batch

Count

Generate UUIDs Copy

Placeholder Image URL

Width

Height

Text

Create URL Copy

—

QR Code (via API image)

Content

Generate QR

Stopwatch

00:00.00

Start Stop Reset

Color Converter

Hex

RGB

Copy Hex Copy RGB

HTML Encode / Decode

Encode HTML Decode HTML Clear

ResultCopy

Slug Generator

my-blog-post-title-2024

Copy Slug

Text Case Converter

UPPER lower Title Case camelCase snake_case

Character / Word Counter

Chars 0

Words 0

Lines 0

No spaces 0

Lorem Ipsum Generator

1 Paragraph 3 Paragraphs 5 Paragraphs Copy

Query String ↔ JSON

Query → JSON JSON → Query Copy Result

CSS Minify / Beautify

Minify Beautify Copy

Markdown Preview

Random String Generator

Length

8 16 32

A–Z a–z 0–9 Letters only Hex Copy

Click generate

Rem ↔ Px Converter

Base font size (px)

Rem

Pixels

Browser Info

Refresh Copy

Number Base Converter

Decimal

Hexadecimal

Binary

Copy Dec Copy Hex Copy Bin

Line Tools

Sort A–Z Unique Reverse Shuffle Copy

Lines 0