Free online invoice generator. Create professional PDF invoices, customize currencies, tax rates, add payment QR codes, and download instantly for free.
Free pay stub generator with built-in paycheck calculator. Calculate federal tax, FICA deductions, overtime, and net pay with instant printable PDF export.
Free online mortgage calculator. Calculate monthly mortgage payments, total interest, amortization schedules, and loan payoff timelines with zero sign up.
Free personal & business loan calculator. Calculate monthly loan payments, total interest costs, and view complete amortization schedules in your browser.
Free online EMI calculator. Compute monthly loan installments, total interest payable, and repayment schedules for home, car, and personal loans instantly.
Free online estimate maker and quote generator. Create professional project estimates and contractor bids with instant PDF export and zero signup.
Calculate sales commissions, tiered bonus brackets, quota accelerators, and real estate splits with instant breakdown charts and zero server logs.
Browser-based image toolkit. Compress to optimized JPEG target sizes, convert WebP, PNG, JPG, decode AVIF, resize dimensions, and inspect EXIF metadata.
Compress JPG, PNG, and WebP images to optimized JPEG directly in your browser. Shrink file sizes to target KB without uploading photos to external servers.
Convert images between PNG, JPG, WebP, and BMP, or decode AVIF locally in your browser. Fast client-side image format transformation with zero server uploads.
All-in-one client-side PDF suite. Merge, split, rotate, organize pages, compress files, convert images, extract digital text, and add security watermarks.
Merge multiple PDF files into a single document directly in your browser. Fast drag-and-drop PDF combiner that never uploads your files to remote servers.
Convert JPG, PNG, and WebP images into clean PDF documents directly in your browser. Arrange pages, adjust margins, and download PDFs with zero uploads.
Split multi-page PDF documents and extract specific page ranges directly in your browser. Safe client-side PDF separation without uploading documents.
Free online JSON toolkit. Format, validate, minify, and inspect JSON payloads with instant error detection and fast in-browser parsing.
Free online regular expression tester and debugger. Test regex patterns with real-time match highlighting, group capture, and explanation in your browser.
Free online SQL query formatter and beautifier. Indent, format, and organize SQL statements for PostgreSQL, MySQL, SQLite, and SQL Server in your browser.
Free online Base64 encoder and decoder. Convert plain text, files, and images to and from RFC 4648 Base64 strings safely with zero server data storage.
Free online CSV to JSON converter. Transform CSV spreadsheet rows into structured JSON arrays and objects with customizable delimiters and type parsing.
Free online text diff checker & code compare tool. Compare source code, text files, and JSON side-by-side with split diffs, inline changes, and patches.
Free online UUID and GUID generator. Generate RFC 4122 Version 4 random UUIDs in bulk with uppercase, lowercase, and hyphen formatting options.
Convert JSON payloads to clean TypeScript interfaces and type definitions instantly. Supports nested objects, optional keys, and union types. Free tool.
Convert Unix timestamps and epoch time to human dates (UTC & local) instantly. Supports seconds, milliseconds & microsecond timestamps. Free online tool.
Free visual CSS Grid generator. Design responsive CSS grid layouts, adjust rows, columns, and gaps visually, and copy production-ready CSS code.
Free JavaScript and TypeScript code formatter. Beautify and clean up messy JS/TS syntax with configurable indentation and zero server uploads.
Free online YAML to JSON converter. Convert YAML configuration files into structured JSON format with syntax validation and instant clipboard copy.
Free SVG optimizer and toolkit. Clean up, minify, and optimize SVG vector graphics to reduce file size while preserving render quality and scalability.
Free online HTML toolkit: format, minify, validate markup, check WCAG accessibility, audit SEO, and sanitize code with client-side processing.
Free online XML to JSON converter. Convert XML documents and feeds into formatted JSON objects with attribute preservation and zero server uploads.
Free online cron generator and crontab calculator. Build, convert, and test 5-part cron schedule expressions in plain English with instant next run times.
Free online CSS formatter and minifier. Beautify, format, or compress CSS stylesheets for faster web page load times and cleaner codebase architecture.
Compare code files and text snippets side-by-side. Highlights line and character diffs locally in your browser with zero data uploads or latency.
Free online word counter, character tracker, and text analyzer. Calculate word count, reading time, sentences, and paragraphs in local browser memory.
Free text case converter. Convert strings to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case instantly with zero server uploads.
Free online text cleaner. Remove extra whitespace, duplicate blank lines, trailing spaces, and non-printable characters with zero server processing.
Free IPv4 and IPv6 subnet calculator. Calculate CIDR prefixes, usable host ranges, AWS subnets, and binary netmasks with instant client-side processing.
Free DNS-over-HTTPS lookup tool. Query A, AAAA, MX, TXT, and CNAME records across Cloudflare, Google, and Quad9 with live propagation comparison.
Free RFC 3986 URL encoder and decoder. Encode and decode query strings, form components, and special characters with UTF-8 support and instant output.
Free online HAR file analyzer. Inspect network waterfalls, response timings, headers, and domain analytics with automatic sensitive data redaction.
Convert cURL commands to JavaScript Fetch, Axios, Python Requests, Node.js, Go, PHP, Java, and Rust with shell parsing and secret redaction.
On-demand browser network diagnostics. Check IPv4 and IPv6 availability, WebRTC mDNS IP leaks, browser connection bandwidth, and multi-CDN latency.
Free URL parser and query parameter inspector. Inspect URL components, protocol, host, path, parameters, and hash fragments with instant live editing.
Instant HTTP status code reference. Search 1xx-5xx REST API response codes, RFC 9110 specs, cache headers, and quick code fixes. Fast client-side search.
Free MAC address & OUI lookup. Identify device manufacturers, hardware vendors, and randomized MAC addresses instantly. Fast client-side database search.
Free online file hash checker. Compute SHA-256, SHA-512, SHA-384, and SHA-1 checksums locally in your browser memory to verify software integrity.
Generate cryptographically secure passwords while testing password strength, crack time, and Shannon entropy locally in your browser.
Inspect, decode, and debug JSON Web Tokens (JWT) or craft and sign new tokens locally with HMAC SHA-256 using client-side processing.
Decode, debug, and verify JSON Web Tokens (JWT) in your browser. Inspect headers, payload claims, and expiration without sending tokens over the network.
Generate strong, secure passwords using browser Web Crypto API. Customize length, symbols, and character sets locally without uploading data to servers.
Free online CSS gradient generator. Design linear, radial, and conic color gradients with visual angle controls and instant copy-paste CSS code.
Free color palette generator. Generate harmonious monochromatic, analogous, and complementary color schemes with HEX, RGB, and HSL export options.
Test text and background colors against WCAG 2.1 AA and AAA accessibility standards. Instant contrast ratio score, hex picker, and accessible color tips.
Free CSS box shadow generator. Design multi-layer drop shadows, inset shadows, blur radius, and spread with instant copy-paste CSS and Tailwind code.
Free online color picker and converter. Convert color values seamlessly between HEX, RGB, HSL, and HSV with live luminance and contrast metrics.
Free CSS border radius generator. Visually adjust 8-value border radius handles, preview organic blob shapes, and copy CSS code instantly with zero lag.
Free online robots.txt generator. Create search crawler rules for Googlebot, Bingbot, and AI crawlers with sitemap integration and zero server storage.
Free XML sitemap validator. Parse sitemap XML files, audit URL formatting, detect broken links and syntax errors with zero server uploads.
Audit canonical URL tags. Compare request URLs against targets, detect parameter drift, protocol mismatches, and trailing slashes directly in browser.
Generate complete search engine meta tags, OpenGraph social preview tags, and Twitter Cards with real-time visual previews and zero server storage.
Generate valid Schema.org JSON-LD structured data for FAQ pages, articles, e-commerce products, and breadcrumbs to secure rich Google SERP snippets.
Generate Google-compliant BreadcrumbList JSON-LD schema markup for your website. Preview structured breadcrumbs and copy code with zero server uploads.
Generate rich snippet Product and Offer JSON-LD schema markup for eCommerce stores. Add pricing, reviews, and availability without uploading store data.
Simple tools that help you get things done. Perfect for developers, students, and creators.
Format JSON and HTML, build a Cron Schedule, use Code Compare, and write SQL.
Make Robots.txt files, validate Canonical URLs, build structured data with the Schema Studio, and preview links in the Social Meta Studio.
Manage, merge, and sign documents with the PDF Toolkit. Optimize, convert, and resize photos with the Image Toolkit.
Verify checksums with the File Hash Checker, protect credentials with the Password Security Hub, or generate codes with the QR Generator.
Calculate payments with the Mortgage Calculator, plan loans, create invoices, and build quotes with the Estimate Generator.
Read simple guides that explain how things work, like cron jobs, JSON, and web security.
Many web tools are weighed down by slow remote servers and intrusive overlays that interrupt your workflow. Outlivo is different. Our tools run directly inside your own browser runtime.
This means your passwords, code, and personal numbers stay private. You can use our tools quickly and safely, without worrying about who is looking at your data.
Our tools run on your device, so you get your answers instantly without waiting.
We don't save or track the things you type into our tools.
Outlivo is completely free to use. There are no hidden fees or limits.
Outlivo hosts 63 purpose-built utilities spanning Developer Tools (JSON formatters, JWT decoders, SQL beautifiers), SEO Utilities (Robots.txt, Sitemap validator, Meta tag generator), Network Diagnostics (DNS-over-HTTPS lookup, IPv4 Subnet Calculator, HAR viewer), Design & A11y (WCAG Color Contrast checker, CSS Grid builder), and Financial Calculators (Mortgage amortization, Loan payoff).
Outlivo is built on a client-side-first architecture. The vast majority of our tools execute calculations, cryptographic hashing, image compression, and code formatting locally inside your web browser using JavaScript and WebAssembly, without uploading your inputs to an Outlivo application server.
Specific network utilities (such as DNS Record Lookup and Network Diagnostics) query public APIs directly from your browser (e.g. Cloudflare/Google DNS-over-HTTPS endpoints and public IP services) to retrieve live DNS records and IP details as requested.