All tools

Measure browser download speed, upload speed, and latency using a lightweight local test.

Reveal your public IP and key browser details while keeping the process privacy-friendly.

Inspect A, AAAA, MX, CNAME, TXT, NS, SOA, and CAA records for a domain.

Check domain availability, status, and structure in a simple browser-based validator.

Check the HTTP response for a URL and review the status, server, and redirect chain.

Test if a site is reachable and quickly review the response status and timing.

Analyze a public website's SEO, technical health, security headers, performance signals, and accessibility basics.

Review HTTP response headers for caching, content type, security, and debugging information.

Review certificate validity, issuer, SAN entries, subject data, and remaining validity time.

Measure the latency between your browser and a public endpoint using browser-friendly timing.

Check whether a given host and port appear reachable from the browser environment.

Parse device, browser, and operating system details from the incoming user agent string.

Convert colors between HEX, RGB, and HSL in real time.

Validate, format, minify, copy, and download JSON with a quick browser-based parser.

Encode and decode UTF-8 text directly in your browser.

Create SHA-256, SHA-384, or SHA-512 hashes locally in your browser.

Convert non-negative integers between binary, decimal, and hexadecimal.

Decode readable JWT headers and payloads locally without verifying signatures.

Encode or decode URL strings and query parameter content securely in-browser.

Generate a QR code from text or a URL and download it as a PNG image.

Combine multiple PDF files into one document locally in your browser.

Extract selected pages from a PDF into a new document locally.

Remove selected pages from a PDF without uploading the file.

Combine PNG and JPEG images into a single PDF document locally.

Turn plain text into a simple downloadable PDF document in your browser.

Generate version 4 UUID strings using cryptographically secure randomness.

Create strong random passwords with adjustable length and symbol support.

Convert text to upper, lower, title, camel, or snake case in your browser.

Generate placeholder paragraphs with adjustable paragraph and word counts.

Calculate the exact difference between two dates and times.

Convert between Unix timestamps and human-readable dates in seconds or milliseconds.

Test regular expressions against sample text to validate search and parse logic quickly.

Count characters, words, lines, sentences, and estimated reading time for any text block.