Developer tools that understand your input.

Format JSON with readable indentation for debugging and documentation.

Parse JSON logs and NDJSON line by line, unescape nested payloads, identify failed records, and copy normalized output locally.

Minify valid JSON into a compact single line without changing objects, arrays, or values.

Generate TypeScript interfaces and types from valid JSON samples in the browser.

Validate JSON syntax in the browser and find errors before using payloads in APIs.

Convert CSV content or files into JSON using browser-based processing.

Encode UTF-8 text into Base64 directly in the browser for tests, headers, and payloads.

Decode standard Base64 or Base64URL into UTF-8 text in the browser with explicit normalization and invalid-input diagnostics.

Detect and convert CSS colors between RGB, RGBA, HEX, HEXA, HSL, and HSLA, including modern syntax.

Decode JWT header and payload JSON locally, then inspect algorithms, audiences, and registered time claims without signature validation.

Encode text, query parameters, and URL segments with percent-encoding for copy-ready URLs.

Decode percent-encoded query strings, paths, and fragments back into readable text.

Generate lorem ipsum paragraphs as plain text placeholders.

Generate up to 20 UUID v4 values for test fixtures and mock data, then copy them as lines, a JSON array, or a CSV column.

Generate synthetic person profiles for tests and prototypes, adapting fields to the current locale.

Generate PNG QR Codes from text or URLs with configurable size, margin, and error correction level.

Calculate SHA-256 hashes locally in the browser.

Calculate MD5 hashes in the browser for quick integrity checks without cryptographic guarantees.

Count words, Unicode characters with or without whitespace, UTF-8 bytes, lines, paragraphs, and sentences without sending text to a server.

Remove Unicode diacritics, review how many characters changed, and preserve punctuation, emoji, and non-transliterated scripts.

Reverse the characters of each word while preserving word order.

Convert phrases and variable names into PascalCase.

Convert text into snake_case quickly.

Convert text into URL-friendly slugs.

Calculate age in full years and total days from a birth date up to today.

Count calendar days between two dates, compare elapsed and inclusive rules, and review weeks, weekdays, and weekend days.

Convert epoch values into readable UTC dates.

Convert a readable date or ISO string into an epoch timestamp.

Calculate how many days are left until a target date or how many days have already passed.

Compress PNG files locally with safe lossless and more aggressive size-reduction modes.

Optimize SVG files locally with standard or custom settings and no uploads.

Extract text from PNG, JPEG, and WebP images with browser OCR in Portuguese, English, or Spanish.

Simulate compound interest with monthly contributions, rate conversion, charts, and time-based projections.

Evaluate scientific math expressions with DEG/RAD modes, trigonometry, logs, powers, roots, and constants.

Break a URL into protocol, domain, path, query string, hash, and port for redirect and callback debugging.

Convert query strings into readable JSON for UTM, OAuth, filters, redirects, and deep-link debugging.

Paste HTTP headers and convert them into readable JSON for cache, CORS, redirects, cookies, and security review.

Identify browser, operating system, device type, and engine from a User-Agent string.

Look up common HTTP status codes for debugging APIs, redirects, cache behavior, and authentication errors.

Calculate network, broadcast, subnet mask, wildcard mask, and usable range for IPv4 CIDR blocks.