Analyze HTTP request and response headers — detect security headers, review formatting, and inspect value structure. Everything runs locally in your browser — nothing is uploaded.
Scan HTTP response headers for security best practices like HSTS, X-Frame-Options, and CSP.
Analyze JSON payload size, structure, nesting depth, and key count for optimizing API request and response bodies.
Parse Set-Cookie headers into structured JSON, or analyze cookie security flags (Secure, HttpOnly, SameSite, expiry).
Projects customer lifetime value using average order value, purchase frequency, gross margin, and estimated customer lifespan in months. SaaS founders and e-commerce operators use LTV to determine acquisition budgets, segment high-value customers, and forecast recurring revenue.
Analyze CSV structure — column types, counts, unique values, and empty cells.
HTTP Header Analyzer lets you analyze HTTP request and response headers — detect security headers, review formatting, and inspect value structure. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Analyze HTTP request and response headers — detect security headers, review formatting, and inspect value structure. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, HTTP Header Analyzer runs entirely on your device with no internet connection needed. All processing is done locally.
Analyze HTTP request and response headers — detect security headers, review formatting, and inspect value structure. Everything runs locally in your browser — nothing is uploaded. All processing runs locally — no code is sent to any server.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check the tool description for specifics.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. Formatters use well-known libraries (sql-formatter, Prettier-compatible patterns) and follow widely adopted rules.
HTTP Security Checker
Scan HTTP response headers for security best practices like HSTS, X-Frame-Options, and CSP.
HTTP Cache Header Generator
Generate Cache-Control directives with configurable max-age, scope, must-revalidate, and no-transform options. Everything runs locally in your browser — nothing is uploaded.