HTTP Headers Checker - Online Inspect URL Response Headers
Enter a URL and see the full HTTP response headers returned by the server. Detect redirects and server type. Useful for SEO and web debugging.
UD5 Toolkit
Bulk check HTTP response status codes, redirect chains and response times for multiple URLs. Perfect for SEO audits, link monitoring, and debugging.
| # | URL | Status Code | Response Time | Redirect Chain | Error |
|---|---|---|---|---|---|
| Enter URLs above and click Check URLs to see results. | |||||
Enter a URL and see the full HTTP response headers returned by the server. Detect redirects and server type. Useful for SEO and web debugging.
Trace the full redirect path of a URL. See every hop, status code, and final destination. Detect broken chains.
Pull out all URLs and links from text. Extract domains, paths, and protocols. Perfect for SEO scraping or analyzing text documents. Client-side execution.
Query DNS records for any domain directly from your browser using DNS-over-HTTPS. See A, AAAA, MX, CNAME, and TXT records. No logs.
Set up high‑intensity intervals with work, rest, and rounds. Audio cues. Sweat without any app. Local only.
Estimate how much agricultural lime or elemental sulfur to add to change soil pH by a target amount. Based on soil type and current pH. Educational.
Calculate water and soda ash needed to pre‑soak fabric for tie‑dye. Achieve vibrant, long‑lasting colors.
Estimate the total price after adding US state sales tax. Select state, enter amount, and see breakdown. Simple and quick, perfect for shoppers.
Find essential Visual Studio Code shortcuts for Windows, Mac, and Linux. Filter by category. Boost your coding speed with this reference.
Set up high-intensity interval training rounds with work and rest periods. Audio alerts and customizable sets. Runs in background, no download.
Test min, max, and step constraints on `<input type='number'>`. See how invalid values are handled. Undocumented behavior.
Adjust material types (leaves, grass) to achieve the ideal 30:1 C:N ratio. Improve compost bin performance. Local only.
Measure and log your glue stick before use. Alerts when you're low. Simple inventory for crafters.
Displays the national poison control number and basic first steps for common household ingestions. Seek medical help immediately.
Schedule your iron supplement away from inhibitors (coffee, calcium). Visual reminder and log.
Select a color in an image and completely remove it or make it transparent. Great for background removal experiments. Local.
Convert speed units such as miles per hour, kilometers per hour, knots, and meters per second. Accurate and quick, works offline in your browser.
Quickly find the final price after a percentage discount. Also works in reverse to find the original price. Handy for budget shoppers.
See how making extra payments reduces tenure and saves interest. Visual graph comparing original vs prepaid amortization. Purely local financial tool.
Select tea type and get recommended steeping time & temperature. Start a visual countdown with an alert. Make every cup perfect. No ads, local.
Compute simple interest and final amount given principal, annual rate, and duration. Also reverse-calculates rate or time. Local only.
Find safe mixing ratios for the classic elephant toothpaste demonstration. Volume adjustments for different container sizes.
Project how your savings and investments grow over time with compound interest. Interactive chart and detailed table. Free and anonymous.
Search a curated dictionary of modern internet acronyms (IMO, TBH, IYKYK) and slang. Simple offline-capable reference. No tracking.
Enter number of emitters and their GPH to calculate total water delivered and optimal run time for your plants.
Calculate dehydrating time based on meat slice thickness and desired texture. Countdown timer with reminders.
Calculate required bags of cement, sand, and gravel for a given concrete volume using standard mix ratios (1:2:4, etc.). Supports metric and imperial.
Look up common acronyms and abbreviations from a built-in list. Search by acronym or meaning. Always expanding, no internet needed.
Randomly prompts you to press a Windows keyboard shortcut (e.g., Win+E). Learn to be a power user.
Perform common percentage calculations: find percent of a number, percentage increase/decrease, and more. Simple, fast, and always available for free.