Tech208 Utilities

Inspect your browser details, headers, and cookies

Stress-test CPU, GPU, memory, network, and storage in your browser

View your webcam with stackable visual effects, snapshot, record, and motion alert — 100% in-browser

Full snapshot of a browser/device — display, GPU, hardware, codecs, locale. Generate share URLs to capture remote systems

CIDR subnet info, IP membership checks, and subnet splitting

Full DNS inspection and mail deliverability analysis — SPF, DMARC, DKIM, blacklists

Simulate any HTTP response code, with optional delay

Measure RTT, jitter, and loss to any URL with live charts and percentiles

Calculate subnet ranges, visualise masks in binary, and explore IP space

Share text, links, and files between devices instantly

Test whether a TCP port is open, closed, or stealthed

Fetch a URL and inspect response headers, timing, SSL certificates, and content

Generate a URL, send any HTTP request to it, see exactly what arrived

Detect WebRTC IP leaks — compares HTTP IP to STUN-discovered IPs, shows all ICE candidates

Connect to any ws:// or wss:// endpoint, send/receive messages, inspect frames

Look up domain registration, contacts, and nameservers

Encode and decode Base64, URL, Hex, and HTML entities

WCAG AA/AAA contrast ratios, APCA Lc, accessible alternatives, colour-blindness simulation

Parse cron expressions, preview next run times, inspect field matches — supports 5- and 6-field syntax

Compare two texts line-by-line with highlighted differences

Format, validate, minify, and convert between JSON and YAML

Decode JSON Web Tokens, inspect claims, verify HS/RS/ES signatures — all client-side

In-browser image editor — layers, effects, drag-drop import, multi-format export

Generate strong passwords and memorable passphrases with entropy display

Live regex matching with group capture and match highlighting

Convert Unix/ISO/RFC dates, compare any two timestamps, view in multiple timezones

Generate TOTP codes from a 2FA secret seed — works offline

Generate v4/v7/v1/v3/v5 UUIDs in bulk, inspect any UUID — version, variant, embedded timestamp

Standard and programmer calculator with base conversion and history

Hash text or files using MD5, SHA-256, SHA-512, and more — all in your browser

Generate a QR code from any text or URL

Generate cryptographically random text in your browser

Transform text: case, line breaks, find & replace, and more