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302 powerful tools
Everything you need,nothing you don't.

A playful toolkit for developers, creators, and tinkerers. Every tool runs directly in your browser — nothing leaves your machine.

302+tools
12categories
100%free & open
0servers involved

◉

Regex Tester

Text

Test & visualize regular expressions with live match highlighting

Aa

Case Converter

Text

Transform text between uppercase, lowercase, camelCase, snake_case & more

⇔

Diff Checker

Text

Compare two texts side by side and highlight differences

Σ

Text Statistics

Text

Analyze word count, characters, sentences, reading time & more

Lorem Ipsum Generator

Text

Generate placeholder text for mockups and designs

⇕

Text Sorter

Text

Sort lines alphabetically, by length, or randomize

§

Slugify

Text

Convert text to URL-friendly slugs and identifiers

✎

Find & Replace

Text

Search and replace text with optional regex support

↔

Text Reverser

Text

Reverse, flip and transform text in multiple ways

◉

Regex Explainer

Text

Understand regex patterns with plain-English breakdowns

Wc

Word Counter

Text

Detailed text statistics with word frequency analysis

···

Morse Code Converter

Text

Convert text to and from Morse code

⇔

Palindrome Checker

Text

Check if text is a palindrome with advanced analysis

⊞

PDF Merger

PDF

Merge multiple PDFs with drag-and-drop reordering

⇗

Split PDF

PDF

Extract pages into separate PDF files

✕

Remove Pages

PDF

Delete unwanted pages from a PDF document

⟳

Rotate PDF

PDF

Rotate individual pages in a PDF

⚷

PDF Protect & Unlock

PDF

Add or remove password protection from PDFs

▤

JPG to PDF

PDF

Convert images into a PDF document

⇩

PDF to Markdown

PDF

Extract text from PDF files as clean Markdown

⇧

Markdown to PDF

PDF

Write Markdown and export as a styled PDF

T↓

Text to PDF

PDF

Convert plain text into a clean, formatted PDF document

⇅

Reorder PDF

PDF

Drag to rearrange pages and export

#

Add Page Numbers

PDF

Stamp page numbers onto every page

✎

PDF Metadata Editor

PDF

Read and edit PDF document information

⇄

Universal Converter

Code

Convert JSON, YAML, Base64, and URL formats

{}

JSON Tools

Code

Format, validate, and minify JSON data

0x

Base Converter

Code

Convert between binary, octal, decimal, and hexadecimal

⦿

UUID Generator

Code

Generate UUID v4 & v7 in bulk

⇄

URL Encoder/Decoder

Code

Encode and decode URLs and query strings

▦

Markdown Table

Code

Build Markdown tables visually and copy the syntax

⦿

ULID Generator

Code

Generate sortable, lexicographically orderable unique IDs

⇅

CSV to JSON

Code

Convert CSV into JSON objects, arrays, or headers

◈

JWT Debugger

Code

Decode and inspect JWT tokens client-side

◩

HTML Preview

Code

Render and preview HTML/CSS/JS in a live sandbox

⇅

JSON to CSV

Code

Convert between JSON and CSV formats

&

HTML Entities

Code

Encode and decode HTML special characters

M↓

Markdown Preview

Code

Live preview of rendered markdown with split view

B64

Base64 Encoder/Decoder

Code

Encode and decode Base64 text and files

CSS

CSS Minifier

Code

Minify CSS and compare size savings

SQL

SQL Formatter

Code

Format SQL queries with proper indentation

YML

YAML Formatter

Code

Format, validate, and convert between YAML and JSON

XML

XML Formatter

Code

Format and minify XML documents

HTML

HTML Formatter

Code

Format and beautify HTML markup

#

Hash Generator

Security

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

⚷

Password Generator

Security

Generate strong passwords with strength meter

⚔

Encryption Tools

Security

Encrypt and decrypt text with AES via Web Crypto API

✓

SHA Hash Verifier

Security

Generate and verify SHA-256 hashes with salt

⊕

OTP Generator

Security

Generate TOTP codes for two-factor authentication

◐

Color Converter

Design

Convert between Hex, RGB, HSL with live preview

◑

Gradient Generator

Design

Create beautiful CSS gradients with live preview

▨

Box Shadow Generator

Design

Design and preview CSS box shadows interactively

◧

Border Radius Generator

Design

Visual border-radius editor with presets

◐

Color Palette

Design

Generate harmonious color palettes from a seed color

T

Typography Scale

Design

Generate modular typography scales for your projects

◑

CSS Filter Generator

Design

Create and preview CSS filter effects visually

F

Font Preview

Design

Preview and compare system fonts with custom text

⟳

Loading Spinner

Design

Generate CSS loading spinners and animations

◇

SVG Viewer

Design

Paste, preview, and inspect SVG code

▶

CSS Animation Generator

Design

Create and preview CSS keyframe animations

⇅

Unit Converter

Math

Convert between length, weight, temperature, data, and speed units

⊕

Calculator

Math

A full-featured calculator with history

%

Percentage Calculator

Math

Calculate percentages, ratios, and changes

⊕

Random Number Generator

Math

Generate random numbers with custom ranges

%

Tip Calculator

Math

Calculate tips and split bills between people

P

Prime Checker

Math

Check if a number is prime with factorization

N

Number to Words

Math

Convert numbers to English words and Roman numerals

◇

Geometry Calculator

Math

Calculate area, perimeter, and volume of shapes

φ

Fibonacci Generator

Math

Generate Fibonacci sequences with golden ratio

⏱

Timestamp Converter

Date

Convert Unix timestamps to readable dates

⏱

Epoch Converter

Date

Convert between Unix timestamps and dates

⏰

Timezone Converter

Date

Convert times between different timezones

⇆

Date Difference

Date

Calculate the difference between two dates

↗

MAC Generator

Network

Generate random MAC addresses with custom prefixes

🌐

User-Agent Parser

Network

Parse UA strings into browser, OS, device and engine

◎

IP Info Lookup

Network

Parse and inspect IPv4 and IPv6 address details

⊞

Subnet Calculator

Network

Calculate subnet masks, ranges, and host counts

⇋

Port Reference

Network

Searchable reference of common TCP/UDP ports

∼

Latency Calculator

Network

Calculate network latency and RTT over distance

⏱

Cron Parser

DevOps

Parse cron expressions and preview execution times

200

HTTP Status Codes

DevOps

Searchable reference of all HTTP status codes

G

Git Reference

DevOps

Searchable reference of common Git commands

▦

QR Code Generator

Media

Generate QR codes from text or URLs

▣

Image to Base64

Media

Convert images to Base64-encoded data URIs

▬

Aspect Ratio Calculator

Media

Calculate ratios and dimensions for any screen size

▯

Image Placeholder

Media

Generate placeholder images as inline SVGs

◎

Image Color Picker

Media

Pick colors from uploaded images with magnifier

◎

Age Calculator

Date

Calculate exact age with zodiac and fun stats

⇆

Business Days

Date

Calculate workdays between dates excluding holidays

◉

World Clock

Date

Live clocks for multiple timezones around the world

Wk

Week Number

Date

Calculate ISO week number and day-of-year stats

?

Decision Maker

Fun

Coin flip, dice roll, yes/no, and custom picker

⚄

Dice Roller

Fun

Roll multiple dice with realistic animations

☺

Emoji Search

Fun

Search and copy emojis by name or keyword

⠿

Braille Translator

Fun

Translate text to and from Grade-1 Braille

D

Fake Data Generator

Code

Generate mock names, emails, phones & more

♫

Text to Speech

Media

Read text aloud with voice, rate & pitch controls

✏

Drawing Board

Design

Freehand drawing canvas with color & brush control

⧉

Image Resizer

Media

Resize images by dimensions with aspect ratio lock

⏳

Countdown Timer

Fun

Set a timer with presets, pause, and audible alert

◉

Color Blindness Simulator

Design

Simulate protanopia, deuteranopia, tritanopia & more

✍

Scratchpad

Text

Quick notes that auto-save to your browser

Hm

HTML Minifier

Code

Strip comments, whitespace & reduce HTML file size

⌚

Stopwatch

Fun

Count up with lap times and millisecond precision

◐

Color Contrast Checker

Design

Check WCAG AA/AAA compliance between two colors

⇉

URL Parser

Code

Parse URLs into components and query parameters

√

Scientific Calculator

Math

Advanced math with trig, log, factorial & more

⊟

Image Cropper

Media

Select and crop a region from any image

ℹ

Device Info

System

View browser, screen, network & system details

◰

Calendar

Date

Monthly calendar view with navigation

TS

JSON to TypeScript

Code

Generate TypeScript interfaces from JSON objects

01

Text Encoder

Code

Encode text as binary, hex, octal & decimal char codes

◐

Color Harmonies

Design

Generate complementary, triadic, tetradic & analogous colors

⚡

Battery Info

System

View battery level, charging status and estimated time

◑

Image Filters

Media

Apply grayscale, sepia & invert filters with adjustable intensity

♩

Speech to Text

Media

Transcribe speech in real-time using your microphone

⏲

Pomodoro Timer

Fun

Focus timer with work/break intervals and session tracking

◐

CSS Color Names

Design

Browse and search all 148 named CSS colors with preview

⌗

CSS Units Converter

Code

Convert between px, em, rem, vw, vh, pt, cm, mm & more with live preview

⌘

Credit Card Validator

Security

Validate card numbers with Luhn algorithm and detect card type

☾

Moon Phase

Date

Find moon phase, illumination and age for any date

□

Resolution Calculator

Media

Calculate aspect ratio, megapixels, PPI and pixel pitch

⇶

HTTP Request Builder

Network

Send HTTP requests with custom method, headers and body

H↓

HTML to Markdown

Code

Convert HTML snippets to clean Markdown

▓

ASCII Art Generator

Fun

Transform text into ASCII art with multiple styles

⊡

GZip Compressor

Code

Compress and decompress text with gzip

▢

CSS Box Model

Design

Visualize and generate CSS margin, border and padding

◫

Storage Explorer

System

Browse, search, add and delete browser localStorage and sessionStorage

◈

SVG to JSX

Code

Convert SVG markup to React JSX components

ISBN

ISBN Validator

Code

Validate ISBN-10 and ISBN-13 with check digit & format conversion

T

Text Shadow Generator

Design

Create multi-layer CSS text shadows with live preview

♩

Metronome

Media

Audio metronome with BPM control and time signatures

♪

Audio Recorder

Media

Record audio from your microphone and download as WebM

⌨

Keyboard Tester

System

Test key presses with a visual keyboard and event log

≡

Flexbox Generator

Design

Visual CSS flexbox layout builder with live preview

⚷

RSA Key Generator

Security

Generate RSA public/private key pairs in PEM format

⚔

Ciphers

Security

Encode and decode text with Caesar, Atbash, ROT13 & Vigenere

⊞

CSS Grid Generator

Design

Visual CSS grid layout builder with live preview

▶

Transition Generator

Design

Create and preview CSS transitions interactively

◐

Palette from Image

Media

Extract dominant colors from any image

⇔

Image Comparer

Media

Compare two images with an interactive slider

.env

Dotenv Parser

Code

Parse .env files and convert to JSON or YAML

⏱

Reaction Time Test

Fun

Measure your reaction speed with click timing

⌨

Typing Speed Test

Fun

Test your WPM typing speed and accuracy

♫

Piano

Media

Play piano with keyboard or click using Web Audio

R

Roman Numeral Converter

Math

Convert between numbers and Roman numerals

◎

CSS Outline Generator

Design

Visual CSS outline property editor with preview

◎

Click Speed Test

Fun

Test how fast you can click in a timed session

◉

BMI Calculator

Math

Calculate BMI, BMR and weight category

◐

Color Temperature

Design

Convert between Kelvin color temperature and RGB

%

Investment Calculator

Math

Project investment growth with compound interest

≡

Duplicate Line Remover

Text

Remove duplicate, empty or unwanted lines from text

⚡

GraphQL Formatter

Code

Format and indent GraphQL queries and mutations

♪

Noise Generator

Media

Generate white, pink, and brown noise for focus or sleep

○

Breathing Exercise

Fun

Guided breathing patterns for relaxation and focus

▤

Scrollbar CSS Generator

Design

Create custom scrollbar styles with live preview

✙

CSS Cursor Reference

Design

Browse and test all CSS cursor values

{ }

Code Beautifier

Code

Auto-indent and beautify JS, HTML and CSS code

⇅

Data Size Converter

Math

Convert between bytes, KB, MB, GB, TB and PB

SV

SemVer Compare

Code

Compare and validate semantic version strings

▦

Media Query Builder

Design

Generate responsive CSS media queries visually

--

CSS Variables Generator

Design

Generate and manage CSS custom properties

⎈

Docker Compose Builder

DevOps

Generate docker-compose.yml from preset services

▣

Base64 Image Viewer

Media

Decode and preview Base64-encoded images inline

≡

Changelog Generator

DevOps

Generate formatted changelogs from entries

⚙

Env File Editor

System

Parse, edit and export .env files to JSON or shell

◇

CSS Clip Path Generator

Design

Visual clip-path shape builder with live preview

⚷

Password Strength Analyzer

Security

Analyze password strength with detailed feedback and entropy

∼

Bandwidth Test

Network

Estimate your connection speed with real-time latency

☸

K8s Deployment Generator

DevOps

Generate Kubernetes Deployment and Service YAML

◎

Screen Color Picker

System

Pick colors from your screen with the EyeDropper API

▆

Barcode Generator

Media

Generate CODE128 barcodes from text or numbers

⊞

Terraform Formatter

DevOps

Format and indent HashiCorp HCL configuration files

↗

Nginx Config Builder

DevOps

Generate nginx server blocks with location directives

⊞

HTML Table Generator

Code

Visually build HTML tables with headers and data

▶

CSS Marquee Generator

Design

Create scrolling text marquee animations in CSS

▦

CSV Viewer

Code

Paste CSV data and view it as a formatted table

⚷

PEM Certificate Viewer

Security

Decode and inspect PEM certificate headers and metadata

ℹ

Notification Tester

System

Test browser push notifications with custom title and body

◉

NTP Clock

Network

Display precise network time synced from worldtimeapi

⇆

Date Range Calculator

Date

Calculate duration between dates in multiple units

Σ

Average Calculator

Math

Calculate mean, median, mode, min, max and range

❝

Quote Generator

Fun

Display random inspirational quotes from a curated collection

📋

Clipboard Manager

System

Copy, paste and manage clipboard history in your browser

⏳

Event Countdown

Date

Live countdown timer to a specific date and time

▬

CSS Aspect Ratio Generator

Design

Generate aspect-ratio CSS from width and height dimensions

PDF

PDF Meta Reader

PDF

Extract and display metadata from uploaded PDF files

🍪

Cookie Viewer

System

View, search and clear cookies set by the current site

◎

DNS Lookup

Network

Query DNS records via Cloudflare DNS-over-HTTPS

⎈

Docker Run Generator

DevOps

Generate docker run commands with ports, volumes and env vars

⚔

Caesar Cipher

Security

Encode and decode text with Caesar cipher and ROT13

💾

Memory Stats

System

View browser JS heap and device memory usage

PDF

PDF Info

PDF

Extract metadata, page count and dimensions from PDF files

◎

Whois Lookup

Network

Query domain registration info via the RDAP protocol

☸

K8s Pod Generator

DevOps

Generate Kubernetes Pod YAML manifests

🌍

Geolocation

System

Get your current GPS coordinates and location metadata

#

Entropy Calculator

Security

Calculate password and text entropy in bits with strength meter

⇆

Day Counter

Date

Count days, weekdays, weeks and months between two dates

◎

Network Info

Network

View real-time browser network connection details

⎈

CI Badge Generator

DevOps

Generate shields.io badge markdown, HTML and URLs

📳

Vibration Tester

System

Test device vibration patterns on mobile browsers

◐

Color Guessing Game

Fun

Guess the hex code that matches the displayed color

F

Font Viewer

System

List and preview system fonts with custom sample text

☸

K8s Ingress Generator

DevOps

Generate Kubernetes Ingress YAML with TLS and annotations

◎

IP Geolocation

Network

Look up geographic location and ISP details for any IP

⚔

XOR Cipher

Security

Encrypt and decrypt text using XOR with a key

🌸

Season Finder

Date

Determine astronomical and meteorological season for any date

◎

URL Health Check

Network

Check URL reachability and inspect response headers and timing

☸

K8s ConfigMap Generator

DevOps

Generate Kubernetes ConfigMap YAML manifests

📹

Screen Recorder

System

Record your screen, window or browser tab

⏱

Time Since

Date

Calculate human-readable time elapsed since any date

🔮

Magic 8 Ball

Fun

Ask a yes/no question and get a classic fortune

▤

PDF Thumbnail

PDF

Generate thumbnail preview images of PDF pages

◈

JWT Generator

Security

Generate JWT tokens with custom payload and HMAC secret

☸

K8s Secret Generator

DevOps

Generate Kubernetes Secret YAML with base64-encoded data

⏱

Countup Timer

Date

Live counter measuring time elapsed since a date

◑

Image Grayscale

Media

Convert images to grayscale, sepia or invert with adjustable intensity

Wc

PDF Word Count

PDF

Count words, characters and sentences in PDF documents

⇅

Bandwidth Converter

Network

Convert between bps, Kbps, Mbps, Gbps and byte/s rates

0x

Hex Converter

Security

Convert text to hex and hex back to text

⏸

Idle Detector

System

Track how long you have been idle without keyboard or mouse

½

Fraction Converter

Math

Convert decimal numbers to fractions with adjustable precision

⇉

URL Extractor

Network

Extract all URLs from text with deduplication

☸

K8s HPA Generator

DevOps

Generate Kubernetes HorizontalPodAutoscaler YAML

🪨

Rock Paper Scissors

Fun

Play rock paper scissors against the computer

ⁿ

Exponent Calculator

Math

Calculate powers, nth roots and logarithms

≡

Text Padding

Text

Pad text with custom characters on left, right or center

#

CRC32 Checksum

Security

Calculate CRC32 checksum of any text input

🎮

Hangman

Fun

Guess the hidden word before the hangman is complete

◑

Image Blur

Media

Apply Gaussian blur to images with adjustable radius

🎉

Anniversary Calculator

Date

Count days until the next anniversary or birthday

≡

Text Wrapper

Text

Wrap text to a specific column width in word or char mode

01

Binary Encoder

Security

Convert text to binary and binary back to text

⎈

Docker Cleanup

DevOps

Generate Docker cleanup and maintenance commands

⏰

Alarm Clock

System

Set a one-time browser alarm with audio and label

🔤

Word Scramble

Fun

Unscramble the jumbled word in this fun word game

⏰

Time in Words

Date

Convert digital time to human-readable words

C

Combination Calculator

Math

Calculate nCr combinations, nPr permutations, and factorials

🍪

Cookie Editor

System

View, set and delete browser cookies for the current site

⎈

Dockerfile Generator

DevOps

Generate Dockerfiles from preset templates for various runtimes

M

MIME Type Lookup

Network

Browse and search common MIME types, extensions and descriptions

⇩

PDF to TXT

PDF

Extract plain text from PDF documents using pdf.js

🔍

PDF Text Search

PDF

Search for text within a PDF document

📡

Ping Monitor

Network

Measure response times and reachability of hosts

☀

Wake Lock

System

Keep your screen awake using the Screen Wake Lock API

☸

K8s Namespace Generator

DevOps

Generate Kubernetes Namespace YAML manifests

📅

Calendar Converter

Date

Convert dates between Gregorian, Hebrew, Islamic and Chinese calendars

♩

BPM Tapper

Fun

Tap any key or click to find the beats per minute

Δ

Levenshtein Distance

Text

Calculate the edit distance between two strings

{}

JSON Minifier

Code

Minify JSON by removing all unnecessary whitespace

⚙

CPU Info

System

View browser CPU core count, architecture and hardware concurrency

U+

Unicode Inspector

Text

Inspect Unicode character details, codepoints and properties

▤

PDF to Image

PDF

Convert PDF pages to PNG images with adjustable scale

◎

SSL Certificate Checker

Network

Check SSL certificate details for any HTTPS domain

⚷

HMAC Generator

Security

Generate HMAC-SHA256 and HMAC-SHA512 signatures with a secret key

⊟

PDF Compress

PDF

Analyze PDF page sizes and estimate compression savings

M→H

Markdown to HTML

Code

Convert Markdown text to rendered HTML in real-time

⊞

CSS Layout Generator

Design

Visual grid, flexbox, and positioning layout builder

💰

Loan Calculator

Math

Calculate monthly payments, interest, and amortization schedule

🥚

Easter Date Finder

Date

Find Easter Sunday date for any year with Orthodox option

⚷

Argon2 Hash Generator

Security

Generate Argon2 password hashes with configurable parameters

⟳

Image Rotator

Media

Rotate and flip images with adjustable angle control

M\

Markdown Escape

Text

Escape and unescape Markdown special characters

◐

CSS Gradient Library

Design

Browse and copy curated CSS gradient presets

P

Permutation Generator

Math

Generate all permutations of a given set with optional filters

📡

Uptime Monitor

DevOps

Log and track website uptime checks over time

⇆

Date Add/Subtract

Date

Add or subtract days, weeks, months, or years from a date

⇋

TCP/UDP Port Scanner

Network

Scan common TCP and UDP ports for availability

◫

Maze Generator

Fun

Generate random mazes with configurable size and solve them

💾

Disk Space Checker

System

Estimate browser storage quota, usage and available space

⎈

Docker Network Generator

DevOps

Generate Docker network configuration YAML

→

Vector Calculator

Math

Add, subtract, dot product and cross product of 2D and 3D vectors

⚷

Security Headers Check

Network

Check a domain's HTTP security headers status

🔤

Word Scramble Solver

Fun

Unscramble letters to find all words

°

Temperature Converter

System

Convert between Celsius, Fahrenheit, Kelvin, Rankine

200

HTTP Status Reference

DevOps

Browse all HTTP status codes with descriptions

?

Random Picker

Fun

Randomly pick items from a list

$

Currency Converter

Math

Convert between 30+ world currencies with live rates

00

ASCII Table

Code

Complete ASCII reference with dec, hex, bin, oct, and HTML entities

🎂

Birthday Countdown

Date

Count days until next birthday with age, zodiac, and stats

⇄

XML to JSON

Code

Convert between XML and JSON formats

╱

Graph Plotter

Math

Plot mathematical functions f(x) on an interactive canvas

🕐

Analog Clock

Date

Live analog clock face with multiple timezone support

🔑

Password Manager

Security

Store and manage passwords locally with encryption

⇄

HTML to JSX

Code

Convert HTML to JSX with attribute mapping and component wrapping

⊞

CIDR Calculator

Network

Calculate network, broadcast, hosts, and binary from CIDR notation

📊

System Monitor

System

Monitor browser, display, network, and battery information

⇔

JSON Diff

Code

Compare two JSON objects and highlight additions, removals and changes

✓

JSON Schema Validator

Code

Validate JSON data against a JSON Schema with detailed error reporting

◉

Regex Generator

Text

Generate regex patterns from presets or build with clickable blocks

◇

SVG Optimizer

Code

Compress and optimize SVG files by removing metadata, comments and whitespace

⇄

CSS to Tailwind

Code

Convert raw CSS properties into Tailwind CSS utility classes

🎞

Video Converter

Media

Convert video between MP4, WebM, MOV, MKV, AVI and GIF in your browser

🎵

Audio Converter

Media

Convert audio between MP3, WAV, OGG, FLAC, M4A, Opus and WebM

🔊

Extract Audio

Media

Pull the audio track out of any video as MP3, WAV, M4A or FLAC

🖼

Video to GIF

Media

Turn any video clip into an animated GIF with smart palette colors

🗜

Compress Video

Media

Shrink video file size with H.264 quality control and resolution caps

✂️

Background Remover

Media

Remove solid-color backgrounds with tolerance, softness and edge feathering

🪄

Image Background Remover

Media

Cut subjects out of photos with an on-device AI model — one image or a whole batch

◆

Favicon Generator

Media

Generate favicon.ico, all PNG sizes and a web manifest, zipped for easy install

🗜️

Image Compressor

Media

Shrink image size as JPEG or WebP with quality control and optional resize

🔁

Image Format Converter

Media

Convert images between PNG, JPEG, WebP and AVIF in your browser