All Free Online Tools

Check SSL/TLS certificates for validity, expiry, issuer, and supported protocol version.

Look up and inspect DNS records, propagation, and nameserver configuration.

• SOA Record Lookup
• DNS Propagation Checker
• CAA Record Lookup
• SRV Record Lookup
• DNSSEC Checker
• TTL Checker

Check domain registration, age, expiry, and WHOIS/RDAP ownership details.

• Domain Availability Checker
• Reverse DNS Lookup
• IP to Domain Lookup
• Nameserver Lookup
• WHOIS Privacy Checker
• Domain Unicode / Punycode Converter

Check the live status, HTTP headers, and technical health of any website.

• Robots.txt Checker
• Sitemap Checker
• Favicon Checker
• Website Technology Checker
• HTML Validator
• CSS Validator
• URL Encoder / Decoder
• Base64 Encoder / Decoder
• Unix Timestamp Converter
• Broken Link Checker
• Website Charset Checker
• HTML Minifier
• URL Parser

Scan for common website security misconfigurations, from HTTP headers to mixed content.

• Referrer-Policy Checker
• Permissions-Policy Checker
• CORS Header Checker
• Mixed Content Detector

Check SPF, DKIM, DMARC, and MX records for email deliverability and security.

• Email Header Analyzer
• DMARC Record Generator

Check response time, compression, caching, and other website performance signals.

• CDN Detection
• Performance Health Score
• Render-Blocking Resources Checker
• Image Optimization Checker

Lightweight on-page SEO analysis - meta tags, headings, canonical, and robots directives.

• Image Alt Text Checker
• Structured Data / Schema Checker
• Indexability Checker
• SEO Health Score
• Meta Tags Preview
• Hreflang Checker

Build, test, and debug HTTP/API requests - request builders, cURL tools, JSON/OpenAPI utilities, and reference lookups.

• cURL Generator
• cURL to Code Converter
• JSONPath Tester
• JSON Pointer Tester
• HTTP Status Code Lookup
• User-Agent Parser
• Webhook Tester
• OpenAPI / Swagger Validator
• OpenAPI to JSON Converter
• OpenAPI to YAML Converter
• API Mock Response Generator

Generate Git commands, branch names, commit messages, .gitignore files, GitHub Actions workflows, changelogs, and README files.

• Git Diff Viewer
• Git Merge Conflict Helper
• Git URL Parser
• GitHub URL Parser
• GitHub Repository URL Generator
• GitHub Actions YAML Generator
• GitHub Actions Validator
• GitHub Actions Cron Helper
• Git Tag Generator
• Semantic Version Generator
• Changelog Generator
• README Generator

Generate and validate Dockerfiles, Docker Compose files, CI/CD pipelines, Terraform, Ansible, and CloudFormation configuration.

• Docker Compose Environment Validator
• GitLab CI Generator
• Jenkinsfile Generator
• CI/CD Pipeline Generator
• Terraform Formatter
• Terraform Configuration Generator
• Ansible Playbook Generator
• Ansible Inventory Generator
• CloudFormation Template Generator
• Infrastructure Config Generator

Calculate file permissions and generate common Linux, Nginx, Apache, SSH, and cron configuration and commands.

• systemd Service Generator
• Nginx Config Generator
• Apache .htaccess Generator
• Nginx Redirect Generator
• Nginx Reverse Proxy Generator
• SSH Command Generator
• SSH Config Generator
• SCP Command Generator
• Rsync Command Generator
• Linux Path Converter
• Environment Variable Formatter

Format, validate, and generate SQL queries and schema - plus MongoDB, Redis, and database data type references.

• SQL INSERT Generator
• SQL UPDATE Generator
• SQL DELETE Generator
• SQL Table Generator
• SQL WHERE Builder
• SQL JOIN Builder
• SQL Query Generator
• Database Schema Designer
• MySQL Data Type Reference
• PostgreSQL Data Type Reference
• SQL Server Data Type Reference
• MongoDB Query Formatter
• MongoDB Query Generator
• Redis Command Builder

Parse and generate AWS ARNs, IAM/S3 policies, and CLI commands - plus region, cost, instance, and resource-naming reference tools.

• AWS IAM Policy Generator
• IAM Policy JSON Validator
• AWS Cron Expression Helper
• AWS CLI Command Generator
• AWS CLI S3 Command Generator
• Cloud Cost Calculator
• AWS Instance Comparison
• AWS Region Time Converter
• Cloud Resource Naming Generator
• Cloud Tag Generator

Generate and validate Kubernetes manifests - Deployments, Services, ConfigMaps, Secrets, Ingress, CronJobs, and more.

• Kubernetes Namespace Generator
• Kubernetes Pod Generator
• Kubernetes CronJob Generator
• Kubernetes Resource Calculator
• Kubernetes Labels Generator
• Kubernetes Selector Builder
• Kubernetes Manifest Formatter
• Kubernetes Manifest Validator

Format, convert, and inspect JavaScript, PHP, and Python code - plus generic code utilities and JSON-to-code converters.

• PHP Array to JSON
• JSON to PHP Array
• PHP var_dump Formatter
• PHP Serialized Data Decoder
• Python Formatter
• Python JSON Formatter
• Python Requirements Generator
• Python Package Name Checker
• Code Indentation Tool
• Code Line Counter
• Code Comment Remover
• Code Beautifier
• Code Minifier
• Code to JSON
• JSON to TypeScript
• JSON to Python
• JSON to JavaScript

Generate CSS gradients, shadows, flexbox/grid layouts, animations, and color palettes - plus unit converters and a specificity calculator.

• CSS Transform Generator
• CSS Animation Generator
• CSS Clip Path Generator
• CSS Filter Generator
• CSS Text Shadow Generator
• CSS Triangle Generator
• CSS Glassmorphism Generator
• CSS Neumorphism Generator
• CSS Color Palette Generator
• CSS Unit Converter
• PX to REM Converter
• REM to PX Converter
• PX to EM Converter
• CSS Specificity Calculator

Format, minify, and convert SVG and images - Base64/Data URI tools, favicon and ICO generation, and image metadata inspection.

• Base64 to Image
• SVG to PNG Converter
• SVG to JPG Converter
• Favicon Generator
• ICO Generator
• Image Dimension Checker
• Image Metadata Viewer
• WebP Converter
• AVIF Converter
• Image Aspect Ratio Calculator
• Image Placeholder Generator
• BlurHash Generator

Generate strong passwords and real password hashes - bcrypt, Argon2, PBKDF2, Scrypt - including framework-specific formats for Laravel, Django, and more.

• Bcrypt Hash Generator
• Argon2 Hash Generator
• PBKDF2 Hash Generator
• Scrypt Hash Generator
• PHP Password Hash Generator
• Django Password Hash Generator
• ASP.NET Password Hash Generator
• Htpasswd Generator

Convert between CSV, JSON, XML, YAML, INI, TOML, Markdown, HTML, and plain text - accurate, client-side data format conversion.

• JSON to YAML Converter
• YAML to JSON Converter
• YAML to XML Converter
• XML to YAML Converter
• TSV to CSV Converter
• CSV to TSV Converter
• INI to JSON Converter
• JSON to INI Converter
• TOML to JSON Converter
• JSON to TOML Converter
• Markdown to HTML Converter
• HTML to Markdown Converter
• HTML to Text Converter
• Text to HTML Converter

Convert number bases, calculate bitwise operations and data storage units, and use everyday calculators - percentage, modulo, and more.

• Number Base Converter
• Bitwise AND/OR/XOR Calculator
• Bit Shift Calculator
• Byte Converter
• Bits to Bytes Converter
• KB/MB/GB/TB Converter
• Download Time Calculator
• Storage Calculator
• File Size Calculator
• Percentage Calculator
• Modulo Calculator
• Scientific Notation Converter
• Roman Numeral Converter

Validate, compare and bump semantic versions, and make sense of npm, Composer and Python dependency constraints.

• Dependency Version Comparator
• Package Name Validator
• Version Range Calculator

Generate the files every project needs - LICENSE, CONTRIBUTING.md, SECURITY.md, CODEOWNERS, .env, Makefile and API docs - plus project, package and endpoint naming helpers.

• Makefile Generator
• Project Name Generator
• Package Name Generator
• API Endpoint Naming Generator
• API Documentation Generator

Convert text, hex, Base64 and files to and from byte arrays, view hex dumps, swap endianness, decode numbers and UTF-8, and identify files by their magic number - all in your browser.

• Byte Array to Base64 Converter
• Byte Array Formatter
• Hex Viewer (Hex Dump)
• Text to Hex Converter
• Endianness Converter
• Bytes to Integer / Float Converter
• Integer to Bytes Converter
• UTF-8 Encoder / Decoder
• Unicode Code Point Converter
• Byte Array Compare
• File Signature (Magic Number) Checker

Count words and characters, change case, compare texts, clean up spacing, remove duplicates, convert lists and generate placeholder, fancy and handwritten text - all in your browser.

• Text Compare (Diff Checker)
• Remove Extra Spaces & Line Breaks
• Find and Replace Text
• Slug Generator
• Reverse Text
• Add Line Numbers
• Keyword Density Checker
• Fancy Text Generator
• Text to Binary Converter
• Morse Code Translator
• Caesar Cipher / ROT13
• Hidden Character Detector
• HTML Entity Encoder / Decoder
• List Converter
• Email Extractor
• URL Extractor
• Number to Words Converter
• NATO Phonetic Alphabet Converter
• Random Picker
• Text Similarity Checker
• Duplicate Sentence Finder
• Text to Handwriting Converter

Work out loan EMIs, SIP and FD returns, PPF, EPF and NPS savings, income tax under both regimes, take-home salary, GST and more - calculated in your browser.

• RD Calculator
• PPF Calculator
• EPF Calculator
• NPS Calculator
• Gratuity Calculator
• HRA Calculator
• Income Tax Calculator (Old vs New Regime)
• Salary In-Hand Calculator (CTC to Take-Home)
• GST Calculator
• Compound Interest Calculator
• Simple Interest Calculator
• Inflation Calculator
• Retirement Calculator
• Mortgage Calculator

Merge, split, compress, rotate, sign and convert PDFs right in your browser - your files are never uploaded to a server.

• Delete PDF Pages
• Reorder PDF Pages
• Add Page Numbers to PDF
• Watermark PDF
• PDF to Text
• Crop PDF
• Sign PDF
• PDF Metadata Editor
• Text to PDF
• Flatten PDF Forms

Compress, resize, crop, convert and edit photos in your browser - passport photos, signatures for forms, HEIC to JPG, watermarks and more. Nothing is uploaded.

• Image Converter
• HEIC to JPG
• Add Text & Watermark to Image
• Blur & Pixelate Image
• Image Color Picker
• Meme Generator