All Free Online Tools

Free SEO Analyzer & Website Audit Tool

Comprehensive SEO analysis for any website. Check technical SEO, on-page factors, content quality, schema markup, Core Web Vitals, and security headers with actionable recommendations.

SEO Tools

Free XML Sitemap Generator

Generate XML sitemaps for your website and submit to Google & Bing for faster crawling and better search rankings.

SEO Tools

Meta Tag Analyzer & SEO Checker

Analyze and optimize meta title, description, and Open Graph tags for any URL. Preview how your page appears in Google search results.

SEO Tools

SEO URL Slug Generator

Convert titles and text into clean, SEO-friendly URL slugs. Supports unicode, special characters, and multiple separator formats.

SEO Tools

Keyword Density Checker – SEO Content Analysis

Analyze keyword frequency and density in your content to improve on-page SEO and avoid over-optimization.

SEO Tools

Robots.txt Generator – SEO Crawl Control

Generate robots.txt rules for search engine crawlers, including user-agent directives and sitemap declarations.

SEO Tools

Schema Generator – JSON-LD Structured Data

Create SEO-friendly JSON-LD schema markup for articles, products, events, and local business pages.

SEO Tools

HTML Minifier – Compress HTML Online

Minify HTML to reduce file size by removing whitespace, comments, and redundant attributes. Speed up page loads with smaller HTML files.

Minification Tools

CSS Minifier – Compress CSS Online

Minify and compress CSS stylesheets online. Remove whitespace and comments to reduce file size and improve website loading speed.

Minification Tools

JavaScript Minifier – Compress JS Online

Minify JavaScript files online by removing whitespace and comments. Reduce JS bundle size to speed up page load time significantly.

Minification Tools

JSON Minifier – Compress JSON Online

Minify and compact JSON data online. Reduce JSON payload size for faster API responses and better web app performance.

Minification Tools

XML Minifier – Compress XML Online

Minify and compress XML documents online by stripping whitespace. Reduce XML file size for faster data transfer and processing.

Minification Tools

URL Encoder & Decoder Online

Encode and decode URLs online. Convert special characters to percent-encoded format or decode encoded URLs back to readable text.

Text Processing Tools

Text Case Converter Online

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more formats with one click.

Text Processing Tools

Lorem Ipsum Generator – Dummy Text

Generate Lorem Ipsum placeholder text for designs and mockups. Choose number of paragraphs, sentences, or words instantly.

Text Processing Tools

UUID / GUID Generator Online

Generate unique UUIDs and GUIDs online in v1, v4, and other formats. Bulk generate identifiers for databases, APIs, and applications.

Text Processing Tools

Cron Expression Builder & Validator

Build, validate, and understand cron job schedule expressions with a visual editor. Get plain-English descriptions for any cron syntax.

Text Processing Tools

Regex Builder Online

Build, test, and debug regular expressions online with live match highlighting, capture groups, flags, and detailed explanations.

Text Processing Tools

Regex Tester – Test Regular Expressions

Test and debug regex patterns with live matching, flags, and highlighted output for faster development.

Text Processing Tools

Date Calculator – Add, Subtract & Compare Dates

Add or subtract days, weeks, months, and years. Calculate date differences, business days, and age with leap year support.

Text Processing Tools

Unix Timestamp Converter – Epoch to Date Online

Convert Unix epoch timestamps to human-readable dates and back. Auto-detects seconds, milliseconds and microseconds, with UTC, local time, ISO 8601 and time zones.

Text Processing Tools

Online Code Editor – HTML, CSS & JavaScript

Write and edit HTML, CSS and JavaScript in the browser with syntax highlighting in a fast, distraction-free browser editor.

Editor Tools

Online SVG Editor & Viewer

Edit, view, and modify SVG files online with a visual editor. Tweak SVG paths, attributes, and shapes with an instant live preview.

Editor Tools

SVG Optimizer – Reduce SVG File Size

Optimize and compress SVG files online. Remove metadata and unnecessary code to reduce file size for faster web performance.

Editor Tools

Markdown Editor & Live Preview

Write and preview Markdown in real time with live rendering. Edit and export Markdown documents to HTML effortlessly.

Editor Tools

HTML to Markdown Converter Online

Convert HTML markup to clean, readable Markdown syntax online. Perfect for migrating content to GitHub, README files, and static site generators.

Editor Tools

Mermaid Diagram Viewer & Live Editor

Create, edit, and render Mermaid diagrams live online. Supports flowcharts, sequence diagrams, class diagrams, ERDs, Gantt charts, and architecture diagrams with instant SVG, PNG, and PDF exports.

Editor Tools

Database Diagram Generator – SQL to ER Diagram

Generate entity-relationship diagrams from SQL CREATE TABLE statements. Visualise database schemas and export the ER diagram as PNG or SVG.

Editor Tools

JWT Secret Key Generator Online

Generate cryptographically secure random secret keys for JWT token signing. Choose key length and encoding format for your auth system.

Security Tools

JWT Decoder – Decode JSON Web Tokens

Decode JWT headers and payloads, inspect claims, and quickly validate token structure for debugging.

Security Tools

Strong Password Generator Online

Generate strong, random passwords with custom length, special characters, numbers, and uppercase letters. Create secure passwords instantly.

Security Tools

TOTP Tester

Generate and verify time-based OTP codes for authenticator app testing

Security Tools

SAML Response Analyzer & Validator

Decode, validate, and inspect SAML Response XML online. Verify assertions, signatures, and timestamps for SSO debugging and troubleshooting.

Security Tools

Hash Generator – MD5, SHA-1, SHA-256, SHA-512

Generate MD5, SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 hashes from text or files at once and verify checksums. Hashing runs locally in your browser.

Security Tools

HMAC Generator & Webhook Signature Verifier

Generate HMAC-SHA256, SHA-1 and SHA-512 signatures and verify GitHub, Stripe, Shopify and Slack webhook signatures. Secrets never leave your browser.

Security Tools

Bcrypt Hash Generator & Checker

Hash passwords with bcrypt using a configurable cost factor and check a password against an existing bcrypt hash ($2a$, $2b$, $2y$). Runs in your browser.

Security Tools

PBKDF2 Key Derivation Generator

Derive keys from passwords with PBKDF2-HMAC-SHA1/256/512, choosing salt, iterations and key length. Verify stored PBKDF2 hashes. Runs in your browser.

Security Tools

SSH Key Generator & Fingerprint Tool

Generate Ed25519 or RSA SSH key pairs in your browser and calculate SHA256 and MD5 fingerprints of public keys for authorized_keys and known_hosts.

Security Tools

Secrets & PII Scrubber – Redact Logs Online

Mask API keys, tokens, passwords, emails, phone numbers, card numbers and IP addresses in logs or text before sharing them in tickets and chats.

Security Tools

Credit Card & IBAN Validator

Check credit card numbers with the Luhn algorithm and detect the card brand, and validate IBANs with the mod-97 checksum and country length rules.

Security Tools

AWS IAM Policy Viewer & Analyzer

Visualize AWS IAM policy JSON as readable statements, see which actions and resources are allowed or denied, and flag risky wildcards and missing conditions.

Security Tools

CSS Custom Scrollbar Generator

Design and generate custom CSS scrollbar styles with a visual editor. Get cross-browser scrollbar CSS code with live preview.

CSS Tools

CSS Gradient Generator – Linear & Radial

Create beautiful linear and radial CSS gradients with a visual editor. Copy gradient CSS code for your web projects instantly.

CSS Tools

Color Strip Generator Online

Generate harmonious color strips using complementary, triadic, analogous, and split-complementary harmony rules.

CSS Tools

Color Palette Generator Online

Create custom color palettes from your own colors. Export HEX, RGB, and HSL values for design systems.

CSS Tools

Text Diff Checker – Compare Text Online

Compare two text blocks and highlight differences side by side. See insertions, deletions, and modifications line by line and character by character.

Developer Utility Tools

Word Counter & Character Count Tool

Count words, characters, sentences, paragraphs, and estimated reading time. Ideal for SEO content writing and social media character limits.

Developer Utility Tools

Duplicate Line Remover Online

Remove duplicate lines from text online with case-sensitive and trimming options. Clean up lists, CSV data, and code instantly.

Developer Utility Tools

Text Line Sorter – Sort Text Online

Sort text lines alphabetically, numerically, by length, or randomly online. Includes reverse sort and case-insensitive sorting options.

Developer Utility Tools

Whitespace Remover & Text Cleaner

Remove extra whitespace, trim blank lines, and normalize text formatting online. Clean up copied text or messy code in seconds.

Developer Utility Tools

String Escape & Unescape Tool Online

Escape and unescape strings for HTML, JavaScript, JSON, SQL, and URL formats. Encode or decode special characters for any context instantly.

Developer Utility Tools

SQL Formatter & Beautifier Online

Format, indent, and beautify SQL queries online. Supports SELECT, INSERT, UPDATE, DELETE, and complex JOINs with syntax highlighting.

Developer Utility Tools

Online Code Formatter – HTML, CSS, JS, JSON, XML

Format and prettify HTML, CSS, JavaScript, JSON, and XML code online. Improve code readability with proper indentation in one click.

Developer Utility Tools

HTML Live Preview Tool Online

Preview and test HTML code live in your browser. Switch between desktop, tablet, and mobile responsive viewports instantly.

Developer Utility Tools

Favicon Generator – Create Website Icons

Create website favicons from text, emoji, or images in all standard sizes (16x16, 32x32, 180x180). Download ICO, PNG, and SVG formats free.

Developer Utility Tools

JSON to HTML Table Converter Online

Visualize and convert JSON data into a clean interactive HTML table. Supports nested objects, arrays, and expandable row views.

Developer Utility Tools

Base64 Encoder & Decoder – Text, Files & Images

Encode text, files and images to Base64 or data URIs and decode Base64 back to text or downloadable files. Supports UTF-8 and URL-safe Base64.

Developer Utility Tools

Chmod Calculator – Unix File Permissions

Calculate Unix file permissions in octal (755, 644) and symbolic (rwxr-xr-x) notation, including setuid, setgid and sticky bits, with ready-to-run chmod commands.

Developer Utility Tools

Mock Data Generator – Fake JSON, CSV & SQL

Generate realistic fake test data with names, emails, addresses, dates and numbers. Export up to 10,000 rows as JSON, CSV, SQL INSERT or XML.

Developer Utility Tools

JSONPath Tester & Evaluator Online

Test JSONPath expressions against your JSON with live results and matched paths. Supports wildcards, recursive descent, slices and filter expressions.

Developer Utility Tools

File Meta Data Analyzer & EXIF Inspector

Inspect and analyze metadata from PDF, JPG, PNG, TIFF, BMP, DOCX, XLSX, CSV, TXT, JSON, and XML files. View EXIF data, hashes, document properties, and compare files side by side.

Developer Utility Tools

QR Code Generator Online - URL, WiFi, vCard

Generate QR codes for URLs, plain text, email, phone numbers, SMS, and WiFi credentials. Download high-quality QR images instantly.

QR Code Tools

PDF Splitter – Split PDF Pages Online

Split PDF documents by page range, every N pages, or odd/even pages. Download individual pages as separate PDF files instantly.

PDF Tools

PDF Merger – Combine PDF Files Online

Merge multiple PDF files into one document online. Reorder pages and combine PDFs free without registration or software download.

PDF Tools

PDF Compressor – Reduce PDF Size Online

Compress and reduce PDF file size online while preserving quality. Optimize PDFs for email attachments, web uploads, and cloud storage.

PDF Tools

PDF to Image Converter – PDF to PNG or JPG

Convert PDF pages to high-resolution PNG or JPG images online. Choose page range, DPI, and output format for each conversion.

PDF Tools

Image to PDF Converter Online Free

Convert JPG, PNG, WebP, and other images to PDF online. Customize page size, orientation, and margin settings for each document.

PDF Tools

PDF to Text Extractor Online

Extract and copy text content from PDF documents online. Output clean plain text or preserve formatting for editing and reuse.

PDF Tools

Rotate PDF Online

Rotate PDF pages by 90, 180, or 270 degrees with optional page range targeting.

PDF Tools

PDF Password Setter

Add password protection to your PDF files for secure sharing.

PDF Tools

Remove PDF Password

Unlock a password-protected PDF when you know the current password.

PDF Tools

OCR PDF – Searchable PDF Converter

Convert scanned PDFs into searchable documents using OCR text recognition.

PDF Tools

Automatic Schema OCR Extractor

Upload a PDF or image to automatically match keywords and extract structured key-value fields and table schemas.

PDF Tools

Generic OCR Data Extractor

Interactively draw crop zones over templates to design reusable templates and extract text from single or multiple documents in batch.

PDF Tools

Full JSON Layout Extractor (Raw OCR)

Perform raw OCR on documents to extract full text lines, structural tables, and bounding box coordinates in a raw JSON tree.

PDF Tools

HTML to PDF Converter

Render raw HTML into downloadable PDF files for sharing and archiving.

PDF Tools

Word to PDF Converter

Convert DOC, DOCX, and ODT files into clean PDF format.

PDF Tools

PowerPoint to PDF Converter

Convert PPT and PPTX presentations to PDF for easier sharing.

PDF Tools

Excel to PDF Converter

Convert XLS, XLSX, ODS, and CSV spreadsheet files to PDF.

PDF Tools

PDF to JPG Converter

Convert each page of a PDF into high-quality JPG files.

PDF Tools

Watermark on PDF

Add a repeated text watermark to all pages in your PDF files.

PDF Tools

Page Numbers on PDF

Add custom-positioned page numbers across your PDF pages.

PDF Tools

Edit PDF Pages

Reorder pages and remove selected pages from a PDF file.

PDF Tools

Compare PDF Differences

Compare two PDFs and inspect text-level differences quickly.

PDF Tools

PDF Form Filler – Fill PDF Forms Online

Upload and fill interactive PDF form fields directly in your browser, then download the completed file.

PDF Tools

Color Converter – HEX, RGB, HSL, CMYK Online

Convert colors between HEX, RGB, HSL, HSV, and CMYK formats online. Copy any color code for CSS, design tools, and development projects.

Converter Tools

Number Base Converter – Binary, Octal, Decimal & Hex

Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36, and encode text to hex or binary bytes. Handles very large numbers.

Converter Tools

JSON, YAML, CSV & XML Converter Online

Convert data between JSON, YAML, CSV and XML in any direction. Choose CSV delimiters, flatten nested objects and download the result. Runs in your browser.

Converter Tools

HTML Beautifier & Formatter Online

Beautify and format HTML markup online with configurable indentation. Fix messy HTML code and improve readability instantly.

Beautifier Tools

CSS Beautifier & Pretty Printer Online

Beautify and format CSS stylesheets with consistent spacing and indentation. Expand minified CSS code for easy reading and editing.

Beautifier Tools

JavaScript Beautifier & Formatter Online

Beautify and unminify JavaScript code online. Fix JS indentation, expand compressed code, and improve readability with one click.

Beautifier Tools

JSON Beautifier & Pretty Printer Online

Prettify and format JSON data online with configurable indentation. Make compact or minified JSON instantly human-readable.

Beautifier Tools

XML Beautifier & Formatter Online

Format and prettify XML documents online with proper indentation and line breaks. Convert minified XML into a beautifully structured format.

Beautifier Tools

HTML Validator – Check HTML Errors Free

Validate HTML code and catch markup errors, unclosed tags, and invalid attributes. Get detailed W3C-style HTML compliance error reports.

Validation Tools

CSS Validator – Check CSS Code Online

Validate CSS stylesheets online for syntax errors, unknown properties, and browser compatibility issues. Get instant error reports.

Validation Tools

JSON Validator & Syntax Checker Online

Validate JSON syntax online and get clear error messages with exact line numbers. Ensure your JSON is valid for APIs, configs, and web apps.

Validation Tools

XML Validator – Check XML Well-formedness

Validate XML documents online for well-formedness and structural errors. Get detailed parser diagnostics and fix malformed XML instantly.

Validation Tools

What Is My IP Address – IP Lookup Tool

Instantly find your public IP address with geolocation details including city, country, ISP, and ASN. Check your IPv4 and IPv6 address online.

Network Tools

Network Speed Tester

Fast.com-inspired Network Speed Tester. Measure download speed, upload speed, latency, jitter, packet loss, server diagnostics, and export test reports.

Network Tools

Subnet Calculator – IPv4 CIDR & IP Range

Calculate IPv4 subnets from CIDR notation: network and broadcast address, usable host range, netmask, wildcard mask and host count. Split networks into subnets.

Network Tools

Web Server Config Generator – Nginx & Apache .htaccess

Generate Nginx server blocks and Apache .htaccess rules for HTTPS redirects, reverse proxies, SPAs, caching, gzip and security headers.

DevOps Tools

CSP Header Builder – Content Security Policy Generator

Build a Content-Security-Policy header directive by directive, analyze an existing policy for unsafe settings, and export it for Nginx, Apache or HTML.

DevOps Tools

SPF, DKIM & DMARC Record Generator

Generate and check SPF, DKIM and DMARC DNS TXT records for email authentication, including DKIM key pairs. Improve deliverability and stop spoofing.

DevOps Tools

Dockerfile Linter – Check Dockerfile Best Practices

Lint a Dockerfile for security and best-practice issues: unpinned base images, running as root, apt cache, ADD vs COPY, layer order and more.

DevOps Tools

Docker Compose Validator – docker-compose.yml Checker

Validate docker-compose.yml files: YAML syntax, service keys, ports, volumes, depends_on, networks and common mistakes, with clear line-level errors.

DevOps Tools

Kubernetes YAML Linter – Validate K8s Manifests

Lint Kubernetes manifests for errors and best practices: missing resource limits, probes, latest tags, privileged containers and label selector mismatches.

DevOps Tools

Helm Values Tool – Diff, Merge & Convert values.yaml

Compare and merge Helm values.yaml files the way Helm does, and convert values to --set flags or back. Spot overridden and missing keys.

DevOps Tools

Log Analyzer – Parse Access Logs & JSON Logs

Parse Nginx/Apache access logs, JSON logs and plain application logs. Filter by level, status or text and see top paths, IPs, status codes and errors.

DevOps Tools

SLA & Uptime Calculator – Allowed Downtime

Convert an SLA percentage such as 99.9% into allowed downtime per day, month and year, combine dependent services and track error budgets.

DevOps Tools

Throughput Estimator – RPS, Bandwidth & Capacity

Estimate requests per second, peak load, bandwidth and the number of servers or workers you need from users, traffic patterns and latency.

DevOps Tools

Conventional Commit & Changelog Generator

Write Conventional Commits messages with a guided builder and linter, and turn a commit list into a grouped CHANGELOG.md with a suggested semver bump.

DevOps Tools

OpenAPI Validator & Viewer – Swagger Spec Checker

Validate OpenAPI 3.x and Swagger 2.0 specs in YAML or JSON, find broken $refs and missing fields, and browse endpoints, parameters and schemas.

QA & Testing Tools

HAR File Viewer & Analyzer

Open HAR files from browser DevTools to inspect every request, response, header and timing, find slow or failed calls and export them as cURL.

QA & Testing Tools

SOAP Message Viewer & Request Builder

Format and inspect SOAP 1.1 and 1.2 envelopes, read headers, body and faults, and build SOAP requests with the matching cURL command.

QA & Testing Tools

XPath & CSS Selector Tester

Test XPath expressions and CSS selectors against your HTML or XML and see every matching element highlighted, for scraping and test automation.

QA & Testing Tools

Gherkin Formatter & Validator

Format and validate Gherkin feature files for Cucumber, SpecFlow and Behave. Align tables, fix indentation and catch syntax errors in scenarios.

QA & Testing Tools

E2E Locator Generator – Playwright, Cypress & Selenium

Paste an HTML snippet and get robust locators for Playwright, Cypress and Selenium, ranked by resilience: role, label, test id, text and CSS.

QA & Testing Tools

Pairwise Test Case Generator – All-Pairs Testing

Generate a minimal set of test cases that covers every pair of parameter values. Cut combinatorial test suites down while keeping coverage.

QA & Testing Tools

Image Format Converter – PNG, JPG, WebP & More

Convert images between PNG, JPG, WebP, GIF, BMP, TIFF, ICO, and AVIF formats online. Fast, free, and no software installation required.

Image Tools

Image Resizer – Resize Images Online Free

Resize images online using Lanczos, Bicubic, and Bilinear algorithms. Maintain aspect ratio or enter custom width and height dimensions.

Image Tools

Image Compressor – Compress Images Online

Compress and optimize JPG, PNG, and WebP images online without losing quality. Reduce file size with adjustable quality presets.

Image Tools

Crop Image Tool

Crop image files with exact x/y coordinates and output dimensions.

Image Tools

Watermark on Image

Apply text or image watermark overlays to photos and graphics.

Image Tools

Meme Creator Online

Upload an image and place styled text anywhere to create memes quickly.

Image Tools

Blur Face in Image

Automatically detect and blur faces to protect privacy in images.

Image Tools