Make professional invoices for free and download them as PDFs.
Create pay stubs with tax deductions. It is completely free and very easy to use.
Calculate your monthly mortgage payments. It is completely free and very easy to use.
Calculate loan payments and interest. It is completely free and very easy to use.
Calculate your monthly EMI payments for loans. It is completely free and very easy to use.
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.
Format, check, and read JSON data easily. It is completely free and very easy to use.
Test and fix your Regular Expressions (Regex). It is completely free and very easy to use.
Format your SQL queries to make them easy to read.
Encode or decode text and files using Base64. It is completely free and very easy to use.
Turn CSV spreadsheets into JSON format. It is completely free and very easy to use.
Free online code compare and text diff checker. Compare source code, text files, and JSON side-by-side with inline diffs and git patch export.
Generate a unique Version 4 UUID. It is completely free and very easy to use.
Turn JSON data into TypeScript types automatically.
Convert Unix timestamps into normal dates you can read.
Build CSS Grid layouts visually and copy the code.
Format your messy JavaScript or TypeScript code to make it neat.
Change YAML text into JSON format. It is completely free and very easy to use.
Make SVG files smaller and cleaner. It is completely free and very easy to use.
Free online HTML toolkit to format, beautify, minify, escape, and preview HTML markup. Fast, client-side HTML tools with zero server tracking.
Change XML data into JSON format. It is completely free and very easy to use.
Free online cron generator and crontab calculator. Build, convert, and test 5-part cron schedule expressions in plain English with instant next run times.
Format and clean up your CSS code. It is completely free and very easy to use.
Free IPv4 and IPv6 subnet calculator. Calculate CIDR prefixes, usable host ranges, VLSM allocations, and binary masks with 100% client-side privacy.
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. Process query parameters, form data, and Unicode strings with live character analysis and strict validation.
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.
Interactive URL parser and query parameter editor. Inspect components, edit query parameters in real time, normalize URLs, and check security flags.
Comprehensive RFC 9110 HTTP status codes reference. Explore cacheability rules, developer guidance, status comparisons, and client response handlers.
Free MAC address and OUI lookup tool. Identify device manufacturers and network hardware vendors from MAC prefixes locally with zero server logs.
Free online file hash checker and checksum verifier. Calculate SHA-256, SHA-512, MD5, and SHA-1 checksums locally in your browser with zero upload.
Generate cryptographically secure passwords and passphrases 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 with complete client-side privacy.
Make colorful background gradients for your website.
Find beautiful color palettes for your designs. It is completely free and very easy to use.
Check if your text colors are easy to read and meet WCAG rules.
Create shadow effects for your website boxes and copy the CSS.
Pick colors and convert between HEX, RGB, and HSL.
Free online CSS border radius generator. Visually customize 8-value rounded corners, organic shapes, and copy CSS border-radius styles instantly.
Free robots.txt generator. Create custom crawler directives, block AI scrapers, configure crawl delays, and declare XML sitemaps with zero server storage.
Free XML sitemap validator. Parse XML sitemaps, audit URL formatting, detect syntax errors, and verify sitemaps.org standards with zero server storage.
Free canonical URL checker and rel=canonical tag validator. Audit self-referencing canonicals, resolve duplicate content, and inspect HTML headers.
Generate complete search engine meta tags, OpenGraph social preview tags, and Twitter Cards with real-time visual previews and zero tracking.
Generate valid Schema.org JSON-LD structured data for FAQ pages, articles, e-commerce products, and breadcrumbs to secure rich Google SERP snippets.
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 53 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 local-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 sending your inputs to external backend servers.
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) to retrieve live DNS records and IP details as requested.