Developer & Security Tools

Fast and powerful tools for developers and security professional. All tools run locally in your browser for maximum privacy.

SEO Tools

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Robots.txt Analyzer

Analyze and validate robots.txt files to ensure proper crawler directives

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Robots.txt Analyzer

Analyze and validate robots.txt files to ensure proper crawler directives

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Sitemap Analyzer

Parse and analyze XML sitemaps to check URLs, priorities, and update frequencies

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Sitemap Analyzer

Parse and analyze XML sitemaps to check URLs, priorities, and update frequencies

Network Tools

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CDN & Firewall Detector

Identify CDN providers and WAF/firewall protection for any website

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CDN & Firewall Detector

Identify CDN providers and WAF/firewall protection for any website

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CORS Policy Checker

Test CORS configuration and check allowed origins, methods, and headers

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CORS Policy Checker

Test CORS configuration and check allowed origins, methods, and headers

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IP Lookup

Get detailed information about any IP address including geolocation and ISP

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IP Lookup

Get detailed information about any IP address including geolocation and ISP

Security Tools

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Secret Key Detector

Scan text for exposed API keys, tokens, and secrets using pattern matching

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Secret Key Detector

Scan text for exposed API keys, tokens, and secrets using pattern matching

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Secret Key Detector

Scan text for exposed API keys, tokens, and secrets using pattern matching

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JWT Decoder

Decode and inspect JSON Web Tokens (JWT) header, payload, and signature

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JWT Decoder

Decode and inspect JSON Web Tokens (JWT) header, payload, and signature

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JWT Decoder

Decode and inspect JSON Web Tokens (JWT) header, payload, and signature

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HTTP Security Headers Checker

Analyze HTTP security headers and get recommendations for improvement

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HTTP Security Headers Checker

Analyze HTTP security headers and get recommendations for improvement

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Base64 Encoder/Decoder

Convert data between encoded and decoded formats

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Base64 Encoder/Decoder

Convert data between encoded and decoded formats

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Base64 Encoder/Decoder

Convert data between encoded and decoded formats

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URL Encoder/Decoder

Convert data between encoded and decoded formats

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URL Encoder/Decoder

Convert data between encoded and decoded formats

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URL Encoder/Decoder

Convert data between encoded and decoded formats

Email Tools

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DMARC & SPF Checker

Verify email authentication records (DMARC, SPF) for any domain

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DMARC & SPF Checker

Verify email authentication records (DMARC, SPF) for any domain

DNS Tools

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CNAME Checker

Lookup CNAME DNS records and view the complete resolution chain

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CNAME Checker

Lookup CNAME DNS records and view the complete resolution chain

GOT QUESTIONS?

Everything You Need to Know, All in One Place

Discover quick and comprehensive answers to common questions about our platform, services, and features.

What is jsmon.sh?

How does jsmon.sh work?

Who is Jsmon built for?

What does Jsmon detect?

How does asset discovery work?

How frequently does Jsmon scan?

How are findings managed?

Does Jsmon help with compliance?

What integrations does Jsmon support?

What does the Enterprise license include?

How is Jsmon different from traditional vulnerability scanners?

TAKE CONTROL

Fix the threats before they are in production.

Start using Jsmon and take control over assets exploitation

Jsmon dashboard Image

TAKE CONTROL

Fix the threats before they are in production.

Start using Jsmon and take control over assets exploitation

Jsmon dashboard Image

TAKE CONTROL

Fix the threats before they are in production.

Start using Jsmon and take control over assets exploitation

Jsmon dashboard Image

© JSMON 2026 All Rights Reserved.

© JSMON 2026 All Rights Reserved.

© JSMON 2026 All Rights Reserved.