Blue Idea – S.E.O Tools
This page at blue-idea.net/1stseo.html hosts a collection of blue & yellow neon-themed online tools. Use the slide-out side menus or the search box to jump to any feature. Each tool includes a Download button to save its output.
Sitemap Validator SEO
Paste your XML sitemap to check if it is well-formed.
Robots.txt Tester SEO
Meta Tag Analyzer SEO
Open Graph Preview Social
URL Redirect Checker Web
Canonical Tag Checker SEO
Broken Link Checker (List) Web
Keyword Density Analyzer Text
Page Speed Estimator Experimental
Structured Data (JSON-LD) Validator SEO
JSON Formatter & Validator Data
CSV → JSON Converter Data
Regex Tester Dev
Markdown → HTML Converter Text
Base64 Encoder / Decoder Data
Text Diff Checker Text
UUID Generator Dev
Hash Generator (SHA-256) Dev
HTML Minifier Dev
Code Syntax Highlighter (Simple) Dev
API Request Tester Dev
JWT Decoder Dev
HTML Entity Encoder/Decoder Dev
User-Agent Viewer Dev
CSS Gradient Generator Design
Color Contrast Checker Accessibility
Password Generator Utility
Unit Converter Utility
Color Picker & Palette Generator Design
File Metadata Viewer Utility
Pomodoro Timer (Simple) Productivity
minutes
To-Do List (localStorage) Productivity
Notes App (localStorage) Productivity
Drawing Canvas App (Simple) Canvas
Hold mouse and draw. Use Download to save PNG.
Random Name/Word Generator Fun
Music Tone Generator (Simple) Audio
Uses Web Audio API for a short beep.