All Tools

84 free tools for developers and designers. No signup required.

Frontend Tools (20)

Backend Tools (16)

SEO Tools (27)

Open Graph Checker

Preview how your website appears on social media

Meta Tag Generator

Generate complete HTML meta tags for SEO and social media

Slug Generator

Create clean URL slugs from titles and lists with batch mode and SEO-friendly controls

Sitemap Generator

Create XML sitemaps to help search engines index your site

Schema Generator

Generate JSON-LD structured data for rich search results

Redirect Checker

Trace URL redirect chains & detect redirect loops

Canonical URL Checker

Validate rel=canonical tags and preferred URL alignment

Robots.txt Checker

Audit crawl directives, sitemap lines, and tested paths

Hreflang Checker

Check alternate language tags, x-default, and return links

Core Vitals Checker

Analyze load times across 3G, 4G, 5G & fiber connections

Meta Tag Extractor

Extract and analyze all meta tags from any webpage

HTTP Header Analyzer

Check security headers, caching & performance optimization

HTML Cleaner

Strip bloated HTML attributes from AI and editor content

Word Counter

Count words, characters, sentences, and paragraphs instantly

Reading Time Estimator

Calculate reading and speaking time for any text

Case Converter

Convert between camelCase, snake_case, kebab-case & 15+ formats

Alt Text Checker

Check image accessibility and WCAG compliance for any URL

Sitemap Splitter

Split large XML sitemaps into smaller files (50,000 URLs each)

Sitemap Validator

Validate XML sitemaps for errors and Google compliance

XML Sitemap Extractor

Extract and export all URLs from XML sitemaps to CSV

Meta Length Checker

Check title and meta description character counts for SEO

Favicon Generator

Generate all favicon sizes from any image — ico, PNG, apple-touch-icon, webmanifest

OG Image Generator

Create beautiful 1200×630 Open Graph images for social media previews

Reading Level Checker

Analyze text readability with Flesch-Kincaid, SMOG, Dale-Chall and more

Web to Markdown

Convert any webpage URL into clean, structured Markdown instantly

Serp Simulator

Preview how your webpage appears in Google search results with live editing

Favicon Checker

Check if your favicon is set up correctly across all platforms

Intel Tools (21)

Third-Party Script Auditor

Detect analytics, pixels, chat widgets, replay tools, and external vendors on live pages

AI Skills Directory

Discover GitHub-backed SKILL.md files by workflow, category, and repo quality

AI Token Counter

Count OpenAI and Claude prompt tokens, inspect context fit, and spot token-heavy inputs

WHOIS Lookup Tool

Inspect RDAP registration data, nameservers, expiry dates, registrar contacts, and hosting clues for public domains

MX Lookup Tool

Inspect MX records, SPF presence, provider hints, and inbound mail readiness for any public domain

Email Header Analyzer

Parse raw email headers to inspect SPF, DKIM, DMARC, routing hops, and sender identity mismatches

CNAME Lookup Tool

Check DNS alias targets, direct A and AAAA answers, and flattening hints for public hostnames

IPv4 to IPv6 Converter

Generate IPv4-mapped, compatible, and 6to4-style IPv6 representations for IPv4 addresses

IPv6 to IPv4 Converter

Extract embedded IPv4 values from mapped, compatible, and 6to4 IPv6 address forms

Hash Identifier

Detect likely hash formats, password-hash schemes, and common digest ambiguities from raw values or batches

Cookie Scanner

Scan live pages for Set-Cookie flags, tracking categories, persistence, and consent banner signals

Number Base Converter

Convert binary, octal, decimal, and hexadecimal values with fixed-width, signed, unsigned, and byte-level views

Two's Complement Calculator

Encode signed integers and decode binary or hex patterns with width-aware signed, unsigned, and bit-level views

Tech Stack Detector

Find what any website is built with — frameworks, hosting, analytics and more

NPM Package Alternative Finder

Find alternative packages for any npm package you're using

Can I Use

Check browser support for CSS, JS and HTML features

npm Trends

Compare npm package downloads, growth, bundle size and GitHub stars

Package Comparator

Compare any two npm packages side-by-side by downloads, bundle size, health score and GitHub stars

Package Health

Check if any npm package is still maintained — health scores, download trends and GitHub activity

Proxy Checker

Test proxy status, latency, anonymity level and location

Screen Resolution Detector

Inspect screen size, viewport size, DPR, orientation, safe-area insets, and live resize signals