Tech208 Utilities
  • Home
  • Downloads
  • Browser
    • Browser InfoInspect your browser details, headers, and cookies
    • Browser TestStress-test CPU, GPU, memory, network, and storage in your browser
    • CameraView your webcam with stackable visual effects, snapshot, record, and motion alert — 100% in-browser
    • System FingerprintFull snapshot of a browser/device — display, GPU, hardware, codecs, locale. Generate share URLs to capture remote systems
  • Network
    • CIDR / IP CalculatorCIDR subnet info, IP membership checks, and subnet splitting
    • DNS + MailFull DNS inspection and mail deliverability analysis — SPF, DMARC, DKIM, blacklists
    • HTTP ResponsesSimulate any HTTP response code, with optional delay
    • Latency / JitterMeasure RTT, jitter, and loss to any URL with live charts and percentiles
    • Subnet CalculatorCalculate subnet ranges, visualise masks in binary, and explore IP space
    • SyncShare text, links, and files between devices instantly
    • TCP CheckTest whether a TCP port is open, closed, or stealthed
    • URL InspectorFetch a URL and inspect response headers, timing, SSL certificates, and content
    • Webhook InspectorGenerate a URL, send any HTTP request to it, see exactly what arrived
    • WebRTC IP Leak TestDetect WebRTC IP leaks — compares HTTP IP to STUN-discovered IPs, shows all ICE candidates
    • WebSocket TesterConnect to any ws:// or wss:// endpoint, send/receive messages, inspect frames
    • WhoisLook up domain registration, contacts, and nameservers
  • Dev Tools
    • Base64 / EncodeEncode and decode Base64, URL, Hex, and HTML entities
    • Color Contrast CheckerWCAG AA/AAA contrast ratios, APCA Lc, accessible alternatives, colour-blindness simulation
    • Cron ParserParse cron expressions, preview next run times, inspect field matches — supports 5- and 6-field syntax
    • Diff ToolCompare two texts line-by-line with highlighted differences
    • JSON / YAMLFormat, validate, minify, and convert between JSON and YAML
    • JWT DecoderDecode JSON Web Tokens, inspect claims, verify HS/RS/ES signatures — all client-side
    • PaintIn-browser image editor — layers, effects, drag-drop import, multi-format export
    • Password GeneratorGenerate strong passwords and memorable passphrases with entropy display
    • Regex TesterLive regex matching with group capture and match highlighting
    • Timestamp ConverterConvert Unix/ISO/RFC dates, compare any two timestamps, view in multiple timezones
    • TOTP / 2FAGenerate TOTP codes from a 2FA secret seed — works offline
    • UUID GeneratorGenerate v4/v7/v1/v3/v5 UUIDs in bulk, inspect any UUID — version, variant, embedded timestamp
  • Games
  • Text
    • CalculatorStandard and programmer calculator with base conversion and history
    • HasherHash text or files using MD5, SHA-256, SHA-512, and more — all in your browser
    • QR CodeGenerate a QR code from any text or URL
    • Random TextGenerate cryptographically random text in your browser
    • TextifyTransform text: case, line breaks, find & replace, and more
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Tech208 Utilities — A growing collection of developer utilities
Admin 2026