How to compress images online without losing quality
Learn how to compress JPG, PNG, and WebP online for free. Shrink photos in your browser with Rankify — no signup, local processing, fast downloads. Read More
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Latest guides and how-tos from Rankify — PDF tools, image editing, networking, and free online utilities.
How to Find a Website's IP Address
Resolve any domain to its current A/AAAA records. Understand CDN fronting and when the IP is not the origin server. Read More
How to resize an image online for free
Resize photos by pixels or percent online for free. Change width, height, and aspect ratio in your browser with Rankify — no install or signup. Read More
How to send a secret one-time message online
Send a secret one-time message that self-destructs after reading. Share passwords safely with Rankify Secret Note — free, encrypted link, no signup. Read More
How I Built an 80+ IP Lookup Website with Next.js 15
A developer walkthrough of building IP Checker Online — 88 network tools on Next.js 15, TypeScript, no database, and SEO-first architecture. Live demo and template details. Read More
How to Test VPN Privacy — IP, DNS & WebRTC Leaks
Verify your VPN actually hides your IP. Run IP, DNS leak, and WebRTC tests in one privacy checklist before you trust the connection. Read More
How to merge PDF files online for free
Merge PDF files online for free. Combine multiple documents into one PDF in your browser with Rankify — drag, drop, download. No signup required. Read More
How to Run a DNS Health Check
Get a full domain DNS report with email auth validation and health score — ideal after hosting or mail migrations. Read More
How to separate PDF pages online
Split PDF files and extract pages online for free. Separate a large PDF into smaller files in your browser with Rankify — no signup or install. Read More
How to convert HTML to PDF online
Convert HTML pages and files to PDF online for free. Save web content as a PDF in your browser with Rankify — no signup, quick download. Read More
How to convert PDF to image (JPG or PNG)
Convert PDF pages to JPG or PNG online for free. Export each page as an image in your browser with Rankify — high quality, no signup required. Read More
Every free tool explained
Full guide to every free online tool here — each utility with a clear description and direct link. Image, PDF, IP, AI, and browser tools. No signup. Read More
How to extract a color palette from an image
Extract color palettes from any image online free. Get HEX and RGB codes for design and branding in your browser with Rankify — no signup. Read More
How to Use Traceroute Online
See each router hop between you and a server. Spot latency spikes and share results with your ISP. Read More
How to resize photos for Instagram posts and Stories
Resize photos for Instagram posts (1080×1080), portraits (1080×1350), and Stories (1080×1920). Free guide + resize tool on Rankify. Read More
IPv4 vs IPv6 — What's the Difference?
Compare IPv4 and IPv6: address format, NAT, speed, security, and adoption. Check which protocol your connection uses with our free IPv6 test. Read More
DNS Lookup vs WHOIS — What's the Difference?
DNS tells you where a domain points; WHOIS shows who registered it. Learn when to use each lookup and how to read the results. Read More
VPN vs Proxy — Which Should You Use?
VPNs encrypt all traffic; proxies usually only reroute one app or browser. Compare privacy, speed, and when each makes sense. Read More
Public IP vs Private IP — What's the Difference?
Your router has a public IP; your laptop has a private one. Learn how NAT works, why ipconfig is not your public IP, and when each number matters. Read More
SSL vs TLS — What's the Difference?
People still say SSL, but HTTPS runs on TLS today. Learn the history, how the handshake works, and how to check your certificate expiry. Read More
How to protect a PDF file with a password
Password-protect PDF files online for free. Encrypt documents with a user password in your browser with Rankify — secure sharing, no signup. Read More
How to convert images to PDF online
Turn JPG, PNG, and other photos into one PDF online for free. Combine multiple images in your browser with Rankify — no signup or software install. Read More
How to convert HEIC to JPG on iPhone and Windows
Convert HEIC photos to JPG for Windows, job portals, and websites. Free browser guide + HEIC to JPG tool on Rankify. Read More
How to Check If Your IP Is Blacklisted
See if your IP appears on spam blocklists. Fix mail delivery and request delisting after abuse incidents. Read More
How to convert images to JPG online
Convert PNG, WebP, HEIC, and other images to JPG online for free. Browser-based format conversion on Rankify — fast downloads, no signup required. Read More
How to compress a large PDF file
Compress large PDF files online for free. Reduce PDF size for email and uploads in your browser with Rankify — practical steps and a free compressor tool. Read More
How to Look Up Domain WHOIS Registration Data
Read WHOIS results: registrar, expiry, nameservers, and status codes. Know what registration data means before you buy or report a domain. Read More
How to Check If Your VPN Is Detected
See whether your IP looks like VPN, proxy, or datacenter. Know what websites likely flag before you assume you're hidden. Read More
How to Run a Ping Test Online
Measure latency to any host in milliseconds. Interpret ping results for gaming, video calls, and ISP troubleshooting. Read More
How to Check SSL Certificate Expiry & HTTPS Status
Validate HTTPS certificates, see issuer and days until expiry, and fix mixed content before browsers warn visitors. Read More
How to resize images for YouTube thumbnails
Resize images to 1280×720 for YouTube thumbnails online free. Meet YouTube upload specs in your browser with Rankify — no desktop editor required. Read More
How to remove the background from an image online
Remove image backgrounds online for free. Get transparent PNG cutouts for products, portraits, and designs — browser-based on Rankify, no signup. Read More
How to compress a photo to 50 KB for online forms
Step-by-step guide to compress photos to 50 KB for online applications. Use Rankify free in your browser — see file size before upload. Read More
How to Test WebRTC Leak With VPN
Detect if your browser exposes local LAN IPs while VPN is on. Adjust settings when leaks appear. Read More
How to unlock a password-protected PDF
Unlock password-protected PDF files you own online for free. Remove PDF passwords in your browser with Rankify — decrypt and edit locked documents. Read More
How to convert Word to PDF online for free
Convert Word DOCX to PDF online for free. Turn documents into shareable PDFs in your browser with Rankify — no Microsoft Office or signup required. Read More
How to Set Up Port Forwarding on Your Router
Forward ports for gaming, remote desktop, or self-hosted apps. Find your public IP, set the rule, and verify with an external port checker. Read More
How to Look Up IP WHOIS Records
Find network owner, CIDR block, and abuse contacts for any IP. Different from domain WHOIS — here's when to use each. Read More
How to Check DNS Propagation Worldwide
See when global resolvers pick up new A, MX, or nameserver records. Understand TTL, caching, and how to read propagation results. Read More
How to Hide Your IP Address Online
VPN, proxy, and Tor compared. What actually changes your visible IP and how to verify with live checks. Read More
How to Test DNS Leak With VPN Connected
See if DNS queries bypass your VPN tunnel. Fix resolver settings so browsing stays private. Read More
How to add a watermark to a PDF online
Add text or image watermarks to PDF files online for free. Stamp DRAFT, CONFIDENTIAL, or branding on every page in your browser with Rankify. Read More
How to crop an image online for free
Crop photos online for free by aspect ratio or custom area. Trim JPG and PNG in your browser with Rankify — precise cuts, no software install. Read More
How to Check DNS Records Online Free
Look up A, MX, TXT, NS, and more DNS records in one search. Step-by-step guide to verify domain DNS after hosting or email changes. Read More
How to test your click speed online (CPS test)
Test your click speed online with a free CPS test. Measure clicks per second, track scores, and improve gaming reflexes — instant browser test on Rankify. Read More
How to Extract Text From an Image (OCR)
Turn photos and screenshots into editable text in your browser. Tips for clear scans and accurate OCR results. Read More
How to Set Up SPF, DKIM & DMARC Email DNS Records
Fix email delivery with SPF, DKIM, and DMARC TXT records. Validate selectors and policy after DNS changes. Read More
How to Translate Morse Code Online
Encode text to dots and dashes or decode Morse back to letters. Play audio and learn the ITU chart in your browser. Read More
How to Look Up an IP Address & Location
Find geolocation, ISP, and ASN for any IPv4 address. Learn what IP lookup can and cannot tell you. Read More
How to rotate PDF pages online
Rotate PDF pages 90° or 180° online for free. Fix sideways scans in your browser with Rankify — select pages, rotate, download. No signup. Read More
Static IP vs Dynamic IP — How to Tell Which You Have
Most home connections use dynamic IPs that change occasionally. Learn static vs dynamic IP, how to check yours, and when a fixed address is worth paying for. Read More
How to Scan a QR Code Online Free
Use your browser camera or upload a screenshot to decode QR codes — URLs, Wi‑Fi, and contact cards without an app. Read More
How to Check Reverse DNS (PTR Records)
Look up PTR records for mail deliverability. Learn why forward and reverse DNS should match on mail servers. Read More
How to share code online with live collaboration
Share code online with live editing and collaboration. Create a link, pair program in real time — free Rankify CodeShare in your browser, no account needed. Read More
How to resize a photo for passport or ID online
Resize passport and ID photos to official dimensions online free. Meet visa and passport size requirements in your browser with Rankify — no studio needed. Read More
How to Run an Internet Speed Test Online
Measure download, upload, ping, and jitter. Learn what speed test numbers mean and when to test on Wi‑Fi vs Ethernet. Read More
How to Test IPv6 Connectivity
Check if your network supports IPv6 and see your address. Dual-stack basics and what to do when only IPv4 works. Read More
How to Scan Open Ports Online
Probe common TCP ports on your server or home IP. Use presets for web, mail, and remote access, then verify single ports. Read More
How to Find Your Public IP Address (Not ipconfig)
ipconfig shows your private LAN IP — not what websites see. Learn how to find your real public IP address free with our live checker. Read More