Generate time-based one-time passwords from a TOTP secret key. Enter your base32 secret, choose a period and digit length, and get the current and next codes with a live countdown timer. Useful for testing and debugging 2FA integrations.

Generate Zod validation schema code from a JSON sample object. Infers z.string(), z.number(), z.boolean(), z.array(), z.object(), and z.null() types automatically. Handles nested objects, arrays of objects with optional field detection, and outputs copy-ready TypeScript with import and z.infer type alias.

Format, validate, and inspect JSON Lines (JSONL) and NDJSON files. Validates each line individually, reports parse errors by line number, outputs compact JSONL or a pretty-print preview, and lets you download the cleaned file.

Calculate the information-theoretic bit entropy of any password or API key. Detects character set pools automatically, shows the total number of possible combinations, and estimates crack time across five attack scenarios from rate-limited web logins to GPU cracking clusters.

Calculate screen width and height from diagonal size and aspect ratio. Convert between inches and centimeters for displays, TVs, and monitors with instant dimension calculations.

Check TLS protocol version compatibility and cipher suite strength ratings against current best practices. Supports IANA and OpenSSL cipher names — rates each suite as Strong, Weak, or Deprecated and explains why.

Scan pasted text, code, or config files for accidentally exposed API keys, tokens, passwords, and private keys. Detects 50+ secret types across AWS, GitHub, Stripe, OpenAI, and more — all client-side, nothing leaves your browser.

Validate TOML configuration file syntax and report errors with line numbers. Paste any TOML content — Cargo.toml, pyproject.toml, config.toml — and instantly see a green checkmark with key counts and structure stats, or a precise error message pointing to the exact line. Includes a collapsible JSON structure preview to confirm what was parsed.

Convert next-generation AVIF images to widely-compatible JPG format with adjustable quality settings. Perfect for ensuring maximum browser compatibility and sharing images with older systems. All conversions run locally in your browser - files never leave your device.

Convert GIF images to modern WEBP format with superior compression and quality. Reduce file sizes significantly while maintaining image quality. Perfect for web optimization and faster loading times. All conversions run locally in your browser - files never leave your device.

Convert PNG, JPG, and WEBP images to next-generation AVIF format with superior compression and quality. AVIF provides better compression than WEBP while maintaining excellent image quality. Perfect for modern web applications. All conversions run locally in your browser - files never leave your device.

Compress images to reduce file size while maintaining quality. Supports PNG, JPG, and WEBP formats with adjustable quality settings. Convert between formats for optimal compression. All processing runs locally in your browser - files never leave your device.

Convert PNG, JPG, and GIF images to modern WEBP format with superior compression and quality. Reduce file sizes by up to 30% compared to JPG while maintaining excellent visual quality. All conversions run locally in your browser - files never leave your device.

Convert WEBP images to PNG format with lossless quality. All conversions run locally in your browser - files never leave your device. Perfect for preserving transparency and maximum quality.

Convert multiple images to a single PDF document. Upload images, reorder pages, and customize PDF page size. Supports JPG, PNG, WebP, and all common image formats.

Convert WEBP images to JPG format with adjustable quality settings. All conversions run locally in your browser - files never leave your device. Perfect for universal compatibility and smaller file sizes.