Free Online Tools — Fast And Simple

Test REST APIs instantly - Like Postman, but in your browser

Encode and decode Base64 strings easily

Visual Linux chmod file permissions calculator with octal numbers, symbolic notation, and shell commands.

Format and beautify code in JavaScript, CSS, HTML, SQL, Python, and more

Minify HTML, CSS, and JavaScript to reduce file size

Build, parse, and explain cron expressions with human-readable explanations and next run schedules.

View, edit, and convert CSV to JSON or other formats

Convert cURL commands to JavaScript Fetch, Axios, Python Requests, Go, and PHP

Generate Lorem Ipsum, fake user data, and test data

Generate MD5, SHA-1, SHA-256 hashes from text

Convert special characters to HTML entities and vice versa instantly

Compare two JSON objects side-by-side with visual color-coded highlighting of added, removed, and modified values.

Format, validate, and beautify JSON data with syntax highlighting

Convert JSON data into TypeScript interfaces, Type aliases, or clean YAML with type inference.

Decode and inspect JSON Web Tokens

Preview how your website link will appear when shared on Facebook, X (Twitter), LinkedIn, Zalo, and Google Search.

Create custom mock APIs instantly for testing and prototyping

Convert numbers between different bases and perform bitwise operations instantly

Test and debug regular expressions with real-time results

Visualize GitHub repository structure and generate markdown tree

Format, beautify, indent and minify SQL queries for PostgreSQL, MySQL, SQLite, BigQuery

Test and validate STUN/TURN server configuration for WebRTC

Convert between Unix timestamp and human-readable date

Encode and decode URL strings for web development

Generate UUID v1 and v4 unique identifiers

Interactive CSS box-shadow and glassmorphism generator with multi-layer shadows and live preview.

Pick colors and convert between HEX, RGB, HSL formats

Convert between px, rem, em, pt, %, and viewport units instantly

Create stunning CSS linear, radial, and mesh gradients with curated palettes, angle controls, and one-click code export.

Compress PNG, JPG, WebP images without losing quality

Generate placeholder images with custom sizes. Simple API for developers.

Convert PNG, JPG images to SVG vector format

Create professional promotional images with custom dimensions

Preview, edit and optimize SVG files in real-time

Convert between Tailwind CSS classes and vanilla CSS styles

Compare two texts and find differences

Write, preview, and export Markdown documents

Convert text between different cases: uppercase, lowercase, title case, and more

Count words, characters, sentences, paragraphs, and estimate reading time in real-time.

Check DNS records, WHOIS, and domain information

Find your public IP address and geolocation

Generate strong random passwords or strengthen existing ones

Encrypt and decrypt text with AES-256, ROT13, and Caesar cipher

Download documents, books, and presentations from Scribd as PDF files

Download presentations from SlideShare as PDF or PPT files

Download study documents from StuDocu for offline access

Shuffle questions and choices to generate multiple exam test codes with automatic answer key matrix

Calculate grade point average and predict target GPA

Write, preview, and copy LaTeX equations

Split participants or students into balanced random teams or groups instantly

Test and practice your typing speed (WPM) and accuracy in English and Vietnamese with live real-time metrics.

Automate Bing searches effortlessly to earn Microsoft Rewards points on PC and Mobile with human-like timing.

Count down to your important events and deadlines

Schedule event reminders with email and browser notifications

Calculate mortgage, loan repayments, and compound interest with monthly amortization schedules and visual charts.

Convert PDF to images and images to PDF

Split pages from a PDF or merge multiple PDF files into one directly in your browser. 100% private and client-side.

Generate customizable QR codes with logos, colors, and styles

Test your internet connection speed, latency (Ping), and jitter in real-time with an animated speed gauge meter.

Precise time measurement with lap tracking functionality

Shorten long URLs with multiple services

Check current time across multiple time zones

Cut and trim audio files (MP3, WAV, M4A) directly in your browser with interactive waveform visualization. Fast and 100% private.

Extract text from images using OCR technology

Test your computer keyboard online. Check for broken or sticky keys, test N-Key Rollover (NKRO) anti-ghosting, detect key chatter, and inspect key codes.

Test your microphone with real-time waveform visualization and audio quality analysis

Remove image backgrounds instantly with AI-powered tools

Record your screen, webcam, and microphone directly in your browser with no software installation or time limits.

Convert audio files to text instantly

Convert written text into natural-sounding speech with customizable voice, speed, pitch, and word-by-word highlighting.

Watch animated animals race to the finish

Spin the wheel to pick random choices

Check current weather and 5-day forecast for any location