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Vietnamese Lunar Calendar

Utilities

Utilities

What Is My IP Address

Instantly find out your public IP address with detailed information including location, ISP, timezone, and security details.

Online Archive Extractor

Extract and browse ZIP, RAR, 7Z, TAR, GZ, BZ2, XZ, and ISO archives directly in your browser. 100% private client-side processing, instant preview, and batch ZIP export.

Fast File Storage

Free high-speed file upload and storage service. Instant direct download links, no ads, no countdown waiting time, and ultra-fast multi-threaded transfers.

User Agent Finder

User Agent Finder is a useful tool that helps you easily find the user agent for your browser

URL Shortener

URL Shortener is a useful tool that helps you shorten long URLs into short URLs

Vietnamese Lunar Calendar - Lịch Âm Việt Nam

View Vietnamese solar and lunar dates, Can Chi, zodiac, solar terms, auspicious hours, holidays and traditional festivals in one calendar.

Keyboard Test Tool

Keyboard testing tool to check key functionality and identify stuck or malfunctioning keys

Wheel of Names

Random name picker with spinning wheel animation. Perfect for raffles, giveaways, and decision making

Lorem Ipsum Generator

Generate custom Lorem Ipsum placeholder text for your designs and mockups.

Temp Mail - Free Disposable Temporary Email

Create instant disposable temporary email addresses to receive verification codes and OTPs without spam. Secure, real-time, and 100% free.

QR & Barcode

QR Code Generator

QR Code Generator is a useful tool that helps you generate QR codes for your website

QR Code Reader

QR Code Reader is a useful tool that helps you read QR codes from your website

VietQR Bank Payment QR Generator

Generate VietQR bank payment QR codes according to NAPAS standards. Easy and secure payment transfers.

Barcode Generator

Barcode Generator is a useful tool that helps you generate Barcodes for your products

Barcode Reader

Barcode Reader is a useful tool that helps you read Barcodes from images or directly from your camera

Converters

CSV to JSON Converter

CSV to JSON Converter is a useful tool that helps you convert CSV files to JSON format

Excel to CSV Converter

Convert Excel (XLS, XLSX) to CSV instantly in your browser. No data is uploaded to our servers, ensuring 100% privacy and security.

XML to JSON Converter

XML to JSON Converter is a useful tool that helps you convert XML data to JSON format and vice versa

Markdown to HTML Converter

Markdown to HTML Converter is a useful tool that helps you convert Markdown text to HTML format and vice versa

Web to Markdown Converter

Easily convert any webpage to Markdown format. Extract article content, ignore clutter, and copy or download the resulting Markdown code for free.

Document to Markdown Converter

Instantly convert PDF, DOCX, DOC, PPTX, and XLSX documents into clean, structured Markdown syntax with table and heading preservation online.

Unix Timestamp Converter

Unix Timestamp Converter is a useful tool that helps you convert Unix timestamps to human-readable dates and vice versa

Case Converter Tool

Change the case of text with our free online Text Case Converter tool

HEX - RGB Converter

HEX to RGB and RGB to HEX Converter is a useful tool that helps you convert HEX color codes to RGB color codes and vice versa

Punycode Converter

Easily convert between Unicode Domain Names (IDN) and ASCII-compatible encoding (Punycode). Supports converting multilingual characters to the xn-- format.

Currency Converter & Exchange Rates

Real-time multi-threaded currency converter (USD, EUR, JPY, VND...) and live Vietnam gold prices from SJC, DOJI, PNJ, and Bao Tin Minh Chau.

Media Tools

Image Compressor

Image compressor is a free online tool to reduce image file size while maintaining good quality. Optimize images for websites, emails, or save storage space in seconds.

Image Format Converter

Free online image format converter tool helps you convert images between popular formats like JPG, PNG, and WebP quickly, safely, and easily in your browser.

Image Editor

Edit images directly in your browser for free. Resize, compress, crop, rotate, flip, apply grayscale or blur effects, and add text overlays — no upload, no software needed.

EXIF Data Viewer

Free online EXIF metadata viewer. Inspect camera settings (aperture, ISO, shutter speed), device model, and GPS coordinates directly in your browser.

SVG Optimizer

Free online SVG Optimizer tool. Strip editor junk, metadata, comments, and unused attributes from Figma, Illustrator, and Inkscape for ultra-lightweight SVG code.

Color Palette Extractor

Free online color palette generator and extractor from images. Automatically detect dominant colors (HEX, RGB, HSL) with high accuracy directly in your browser.

Website Screenshot Generator

Capture full-page or viewport website screenshots online in high resolution across Desktop, Tablet, and Mobile devices. Download or copy instantly.

Audio to MP3 Converter

Convert audio files to MP3 format directly in your browser. This tool works client-side without uploading audio to a server.

Lyric Search & Synced LRC Downloader

Search song lyrics and download synchronized karaoke LRC files for free from the open LRCLIB database. Features popular Vietnamese hits, .lrc downloads, and built-in connection retry resilience.

M3U8 HLS Video Downloader

Download HLS (M3U8) videos directly in your browser. This tool works client-side without uploading videos to a server.

Online Screen Recorder

Record your screen, webcam, system audio, and microphone directly in your browser. 100% free, no software install, no watermark, no time limit, and completely private.

Online Voice Recorder

Record your voice and microphone audio directly in your browser. 100% free, private client-side processing, live waveform visualizer, audio trimming, and instant WAV or WebM download.

Audio Extractor (MP3)

Extract crystal-clear audio tracks from any video file and export directly as high-bitrate MP3 or lossless WAV. 100% client-side in browser, fast, free, and private.

Audio Cutter Online & Ringtone Maker

Trim audio files, create ringtones, customize Fade In/Out, boost volume, adjust speed & pitch with a smooth 60fps waveform. 100% client-side Web Audio API, fast and private.

Video Merger Online

Combine and join multiple video clips into one seamlessly in your browser. Custom aspect ratio (16:9, 9:16 TikTok, 1:1), transitions, background audio, 100% private with no server upload.

PDF Tools

Merge PDF Files Online

Easily combine multiple PDF files into a single document online. Secure, fast, and free PDF merging tool directly in your browser.

Split PDF Files Online

Easily split or extract pages from a PDF file online. Secure, fast, and free PDF splitting tool directly in your browser.

Compress PDF Online

Reduce your PDF file size by optimizing embedded images. Free, fast, and secure client-side PDF compressor.

Rotate PDF Online

Rotate your PDF pages by 90, 180, or 270 degrees. Completely free, secure, and processes directly in your browser without uploading to any server.

Delete PDF Pages

Remove unwanted pages from your PDF file for free. Fast, secure, and fully client-side processing.

Extract PDF Pages

Extract specific pages from your PDF file into a new document. 100% free, fast, and secure client-side extraction.

Rearrange PDF Pages

Rearrange and reorder pages in your PDF document exactly the way you want. 100% free, fast, and processed locally on your device.

Add Page Numbers

Add page numbers into your PDF files easily. Choose your preferred position, format, and typography. 100% free and processed on your device.

Watermark PDF

Add a custom text watermark to your PDF documents instantly. 100% free, fast, and processed securely on your device without uploading.

Edit PDF Metadata

View and edit the hidden metadata of your PDF documents including Title, Author, Subject, and Keywords. 100% free and processed locally.

Flatten PDF

Bake forms, annotations, and comments into static, non-editable content. Secure your PDF and make it ready for printing. 100% free and client-side.

Sign PDF

Add your electronic signature to any PDF document for free. Draw your signature or upload an image. 100% secure and processed locally on your device.

Image to PDF

Easily convert multiple JPG, PNG, and JPEG images into a single PDF document. Rearrange images and adjust margins. 100% free and client-side.

Convert PDF to Word

Convert your PDF files to editable Word (DOCX) documents online for free. No installation required. Fast, secure, and accurate conversion.

PDF to Excel Converter

Extract tables and text from your PDF files into Microsoft Excel spreadsheets (XLSX) instantly for free.

PDF to PowerPoint Converter

Easily convert your PDF presentations into Microsoft PowerPoint format (.pptx) instantly directly in your browser.

PDF to Image Converter

Extract and convert PDF pages into high-quality JPG or PNG images instantly for free in your browser.

Extract Images from PDF

Extract embedded images, photos, and graphics from PDF documents online for free. High resolution, 100% private in-browser extraction with bulk ZIP download.

PDF to Text

Extract all readable text from your PDF files instantly. Copy to clipboard or download as a TXT file. 100% free and runs securely in your browser.

Protect PDF

Encrypt your PDF files with a secure AES password. 100% free, fast, and processed securely on your device without uploading.

Unlock PDF

Remove the password from your PDF documents instantly. 100% free, fast, and processed securely on your device without uploading.

AI Tools

AI Detector - Free AI Text & Content Detector

Free AI Detector tool powered by advanced deep learning algorithms. Analyze up to 15,000 characters to detect ChatGPT, GPT-4, Claude, Gemini, and LLM-generated content with high accuracy.

Gemini Flow Watermark Remover

Remove Gemini Flow, Veo, Imagen 3, and Jimeng AI watermarks from images and videos directly in your browser. 100% free, client-side reverse alpha blending, zero server uploads.

Security

Password Tools

Password Generator

Generate secure, random passwords with customizable options for length, character types, and security requirements

Password Strength Test

Test the strength of your password against common security criteria and get advice on how to improve it

Password & Data Breach Checker

Check whether your password has been exposed in major data breaches using the k-Anonymity privacy model (Have I Been Pwned & XposedOrNot). Zero-knowledge security, passwords never leave your device.

Bcrypt Hash Generator

Generate secure Bcrypt hashes with custom cost factors and verify existing hashes against plaintext passwords

Scrypt Hash Generator

Generate and verify Scrypt hashes for secure password hashing.

Argon2 Hash Generator

Generate secure Argon2 hashes with customizable memory cost, time cost, and parallelism parameters

Htpasswd Generator

Generate and verify htpasswd entries for Apache HTTP Server basic authentication with multiple hash algorithms

Hash & Checksum

Hash Generator

Generate hash values using various algorithms (MD5, SHA-1, SHA-256, SHA-512, etc.) for text input or files

File Hash Checker

Verify file integrity by comparing its hash (MD5, SHA-1, SHA-256) with an expected hash value.

Hash Identifier Tool

Identify the type of a given hash using various algorithms (MD5, SHA-1, SHA-256, SHA-512, etc.)

Encode/Decode

Base64 Encoder/Decoder

Base64 Encoder/Decoder is a useful tool that helps you encode text to Base64 format and decode Base64 back to plain text

URL Encoder/Decoder

URL Encoder/Decoder is a useful tool that helps you encode or decode URLs to make them safe for transmission.

HTML Encoder/Decoder

HTML Encoder/Decoder is a useful tool that helps you encode or decode HTML entities in text, converting special characters to their HTML entity equivalents

JWT Debugger

Encode and decode JWT tokens with support for multiple algorithms including HMAC, RSA, ECDSA, and EdDSA

Encryption Tools

AES Encryption

Encrypt and decrypt data using AES (Advanced Encryption Standard) algorithm with AES-128/192/256, multiple modes, and padding schemes

RSA Encryption

Encrypt and decrypt data using RSA asymmetric encryption with public/private key pairs, PKCS1 v1.5 and OAEP padding

DES Encryption

Encrypt and decrypt data using DES (Data Encryption Standard) algorithm with ECB or CBC modes

Triple DES (3DES) Encryption

Encrypt and decrypt data using Triple DES (3DES) algorithm with multiple modes (ECB, CBC, CFB, OFB, CTR) and padding schemes

Generators

UUID Generator

Generate Universally Unique Identifiers (UUID) v1, v4, and v7 for your applications

OTP Generator

Generate and verify Time-based (TOTP) and HMAC-based (HOTP) One-Time Passwords

Gmail Dot Trick Generator

Generate all possible Gmail email variations using the Gmail Dot Trick

Webmaster Tools

DevOps & System

Docker Compose Validator

Validate Docker Compose YAML syntax and configuration structure online. Verify services, networks, volumes, port bindings, and dependency links with line tracking.

Kubernetes YAML Validator

Validate Kubernetes YAML manifests online. Check syntax, required fields (apiVersion, kind, metadata, spec), multi-document resources, and security best practices.

Systemd Service Parser

Parse Linux systemd .service unit files into structured JSON online. Analyze directives, inspect service sections, merge arrays, and validate service syntax.

Cron Expression Generator

Cron Expression Generator tool helps you easily create and verify cron jobs with an intuitive interface without memorizing complex syntax. Preview the next 5 runs to ensure correct execution schedule.

Code Tools

JSON Crack

Visualize and explore JSON data in an interactive tree format.

JSON Formatter

Format and beautify your JSON data with this free online tool. Make your JSON code easy to read with proper indentation and syntax highlighting

JSON Compare

Compare two JSON documents by path and find added, removed, changed, or type-changed values directly in your browser.

JSON Viewer

Visualize, parse, and explore JSON data with our interactive JSON viewer tool. Tree view with collapsible nodes makes it easy to analyze complex JSON structures

Regex Tester

Test and debug regular expressions with real-time matching.

Text Diff

Compare and visualize differences between two text files or code snippets. Use our free online text comparison tool to find changes between documents.

Chrome Extension Source Viewer

View source code of any Chrome extension directly online. Download CRX, unpack to ZIP, explore file tree, audit permissions, inspect manifest.json, and format minified code.

Code to Image

Free online Code to Image generator to convert source code into beautiful, aesthetic screenshots with macOS window frame, colorful gradients, and syntax highlighting for social media.

Mock Data Generator

Generate realistic mock user profiles, test fixtures, and dummy data in JSON, CSV, SQL, YAML, and XML formats powered by Random User API.

Code Formatters

HTML Formatter

Format and beautify your HTML code for better readability. This free online tool helps you indent and format messy HTML code properly.

CSS Formatter

Format and beautify your CSS code for better readability. This free online tool helps you indent and format messy CSS code properly.

JavaScript Formatter

Format and beautify your JavaScript code for better readability. This free online tool helps you indent and format messy JS code properly.

TypeScript Formatter

Format and beautify your TypeScript code with this free online tool.

JSX Formatter

Format and beautify your React JSX and TSX code with this free online tool.

Vue Formatter

Format and beautify your Vue.js Single-File Components with this free online tool. Make your Vue code easy to read with proper indentation and syntax highlighting.

PHP Formatter

Format and beautify your PHP code with this free online tool. Make your PHP code easy to read with proper indentation and syntax highlighting

SQL Formatter

Format and beautify your SQL queries with this free online tool. Make your SQL code easy to read with proper indentation and syntax highlighting

YAML Formatter

Format and beautify your YAML data with this free online tool. Make your YAML code easy to read with proper indentation and syntax highlighting

Markdown Formatter

Format and beautify your Markdown, CommonMark, GFM, and MDX files with this free online tool.

GraphQL Formatter

Format and beautify your GraphQL queries and schemas with this free online tool. Make your GraphQL code easy to read with proper indentation and syntax highlighting

Flow Formatter

Format and beautify your Flow type-annotated JavaScript code with this free online tool.

JavaScript Obfuscator

Obfuscate and protect your JavaScript code. This free online tool helps you protect your JS code from being stolen, copied, or reverse engineered.

Network Diagnostic

WHOIS Domain Lookup

Look up domain registration details with our free WHOIS lookup tool. Get information about domain owners, registration dates, expiration, and more.

Domain Age Checker

Accurate online domain age checker tool. Find out exact registration date, expiration date, domain age in years, months, and days, and registrar details.

Domain to IP Converter

Convert domain names to IP addresses with detailed geolocation information from multiple DNS servers worldwide.

What is my IP

Find out your public IP address and get detailed information about it including location, ISP, and more.

ASN Lookup

Look up Autonomous System Number (ASN) details with our free ASN lookup tool. Get information about network owners, registration dates, routing, and more.

Subdomain Finder

Find subdomains disclosed by public TLS certificate transparency logs, review certificate context, and reuse cached results.

DNS Record Lookup

Check all DNS records for a domain including A, AAAA, MX, TXT, NS, SOA and more.

DNS Trace Debugger

Trace DNS resolution step-by-step from Root → TLD → Authoritative nameservers, similar to dig +trace. Choose your DNS resolver: Cloudflare, Google, Quad9.

DNSSEC Debugger

Verify and debug the full DNSSEC chain of trust from the DNS Root zone down to your domain. Check DNSKEY, DS, and RRSIG records at every level.

Website Ping Tool

Check website connectivity and response time from your server or from multiple global locations

Internet Speed Test

Test your internet connection speed with our advanced speed test tool. Measure download, upload speeds, ping, and jitter in real-time.

Port Scanner

Scan an IP address or domain to find open ports. A basic port scanner for network troubleshooting.

Proxy Checker - Test Proxies

Test the status, speed, and anonymity level of multiple proxies at once. Supports HTTP, SOCKS4, and SOCKS5 proxies with authentication.

WebRTC Leak Check

Test your browser for WebRTC IP leaks. Check whether your proxy server or VPN is leaking your real public IPv4, IPv6, or local LAN IP address.

Browser Fingerprint Scan - Deep & Detailed Detection

Deeply inspect your browser fingerprint, device entropy, and tracking hashes. Test Canvas, WebGL, AudioContext, system fonts, and anti-spoofing genuineness rating.

IP Blacklist Checker

Check whether an IP address is on anti-spam blacklists (RBL/DNSBL) in real time. Inspect reputation across 30+ major mail and security databases.

Subnet / IP Calculator

Subnet / IP Calculator is a powerful tool to help you calculate and manage network parameters quickly and accurately.

SSL Certificate Checker

Check the validity and details of an SSL certificate for any website. View expiration dates, issuer information, and security details.

HTTP Header Checker

Check the HTTP headers returned by a web server. Analyze status codes, content types, and security headers.

CORS Checker

Check the Cross-Origin Resource Sharing (CORS) policy of a web server. Analyze Access-Control headers.

SEO Tools

XML Sitemap Generator

XML Sitemap Generator is a useful tool that helps you generate an XML sitemap file for your website to help search engines index your pages.

Robots.txt Generator

Create a robots.txt file with crawler-specific Allow and Disallow rules, crawl delay, sitemap URL, AI bot controls and ready-made templates.

Open Graph Meta Generator

Open Graph Meta Generator is a useful tool that helps you generate Open Graph meta tags for your website to improve social media sharing.

Open Graph & Twitter Card Checker

Analyze and score the Open Graph and Twitter Card tags of any URL. Get suggestions to improve your social media link previews.

Schema Markup Generator

Generate JSON-LD Schema markup for your website to enable rich results in search engines. Supports Article, FAQ, Product, Local Business, and more.

Page Link Analyzer

Free online tool to extract and analyze all links on a webpage. Identify internal, external, dofollow, and nofollow links instantly for SEO audits.