Single-purpose web utilities, fluidly organized

Test and debug regular expressions in real time with match highlights, capture groups, and flags.

Compare two text blocks side-by-side or inline to highlight exact insertions and deletions.

Beautify, validate, and minify JSON data with recursive key sorting and line-level error detection.

Convert between CSV and JSON formats with support for quoted fields, custom delimiters, and headers.

Build and debug cron expressions with a visual schedule builder and human-readable intervals.

Compress HTML, CSS, and JavaScript code to strip whitespace, comments, and reduce payload size.

Inspect hidden file properties, EXIF camera data, PDF info, and hex bytes locally in your browser.

Convert seamlessly between YAML configuration files and JSON payloads with live syntax validation.

Beautify, minify, and validate XML documents with customizable indentation and syntax checks.

Format and indent complex SQL queries with configurable keyword casing and clause alignment.

Inspect protocol, host, path, and edit URL query string parameters in an interactive table.

Bulk generate UUID v4, time-ordered UUID v7, Nil UUIDs, and lexicographically sortable ULIDs.

Generate TypeScript interfaces, type aliases, and JSON Schema definitions from any JSON payload.

Convert cURL terminal commands into JavaScript fetch, Axios, or Python requests code snippets.

Search and filter all 1xx–5xx HTTP response status codes with meanings, RFC notes, and use cases.

Convert Unix file permissions between octal (755) and symbolic (rwxr-xr-x) with interactive toggles.

Calculate network address, broadcast IP, usable host range, and subnet mask from IPv4 CIDR blocks.

Analyze word count, character length, sentence count, and estimated reading time in real time.

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case.

Deduplicate lists and logs with configurable case sensitivity, trimming, and sorting options.

Convert between Markdown and clean HTML in real time with live rendered preview.

Extract emails, URLs, phone numbers, IP addresses, and hashtags from any block of text.

Generate placeholder paragraphs, sentences, words, or HTML lists for layouts and wireframes.

Convert article titles and strings into clean, SEO-friendly URL slugs with accent transliteration.

Sort text lines alphabetically, numerically, by length, reverse order, or shuffle randomly.

Batch search and replace text using plain strings or regular expressions with capture groups.

Hard-wrap lines at a fixed column width, unwrap hard breaks, or add blockquotes and indentation.

Build, edit, and align Markdown tables visually or import directly from CSV/TSV data.

Measure Flesch-Kincaid reading ease, grade level, syllable statistics, and top keyword phrases.

Compare two lists to find common items (intersection), unique items (A-B, B-A), and combined union.

Inspect Unicode code points, UTF-8 byte sequences, and strip hidden zero-width characters.

Spell out numbers and currency amounts into English cardinal, ordinal, and check-writing words.

Encode and decode Base64 strings with full UTF-8 support for text payloads and data URIs.

Escape or unescape special characters in URLs and query parameters safely.

Compute MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes locally in your browser.

Decode and inspect JSON Web Token headers, payload claims, and expiration timestamps offline.

Generate high-entropy random passwords with customizable length and character rules.

Evaluate password entropy, crack-time estimates, and common pattern vulnerabilities.

Create random API keys, secrets, and tokens in Hex, Base64, UUID, or alphanumeric formats.

Encode and decode HTML entities in named (&), decimal (&), or hexadecimal (&) formats.

Translate plain text to and from 8-bit Binary, Hexadecimal, Octal, and Decimal byte values.

Compute HMAC-SHA256, HMAC-SHA384, and HMAC-SHA512 signatures with a secret key in Hex or Base64.

Encrypt and decrypt text messages client-side using 256-bit AES-GCM and PBKDF2 key derivation.

Generate memorable Diceware-style multi-word passphrases with custom separators and entropy metrics.

Translate text to and from International Morse Code with live Web Audio tone playback.

Encode, decode, and brute-force ROT13, ROT47, Atbash, and all 25 Caesar cipher shifts.

Derive cryptographic keys from passwords using PBKDF2 with custom salt, iterations, and SHA hashes.

Build Content-Security-Policy (CSP), HSTS, and Permissions-Policy headers with server configs.

Automatically redact emails, credit cards, SSNs, IP addresses, phones, and secrets from text logs.

Convert between HEX, RGB, HSL, and HWB color formats and verify WCAG contrast ratios.

Convert images between PNG, JPG, and WebP formats locally with adjustable quality.

Resize images by exact pixel dimensions or percentage scale while preserving aspect ratio.

Crop, rotate, and flip images using common aspect ratio presets or freeform selection.

Redact sensitive details in images using rectangular or brush blur and pixelation tools.

Generate downloadable QR codes from URLs or text, or decode existing QR code images.

Generate and scan 1D barcodes in CODE128, EAN, UPC, and ITF formats.

Create linear, radial, and conic CSS gradients with multi-stop controls and curated presets.

Design multi-layered CSS box shadows and frosted glassmorphism surfaces with live sliders.

Minify SVG code, strip editor metadata, preview vector scaling, and encode to CSS Data URIs.

Calculate proportional width and height dimensions, simplify ratios, and check screen PPI/DPI.

Create custom monogram or emoji favicons and export 16×16, 32×32, 180×180, and 512×512 PNGs.

Pick exact pixel colors from any image with a magnifier loupe and extract dominant palettes.

Generate custom-sized SVG and PNG placeholder images with custom colors, text, and dimensions.

Craft organic 8-point CSS border-radius shapes and geometric clip-path polygons visually.

Convert between PX, REM, EM, and PT units and generate harmonious CSS typographic scales.

Apply customizable single or tiled text watermarks to images locally in your browser.

Convert length, weight, temperature, volume, speed, and digital storage units instantly.

Convert numbers between standard integers and Roman numerals up to 3,999.

Calculate exact chronological age in years, months, and days, plus next birthday countdowns.

Convert Unix timestamps, compare timezones, and calculate exact durations between dates.

Plot and inspect 2D mathematical functions on an interactive coordinate plane.

Multiply matrices and inspect the step-by-step dot-product calculation for every cell.

Convert integers between Binary (2), Octal (8), Decimal (10), Hex (16), and arbitrary bases (2–36).

Calculate percentages, percentage change, discounts, tax, and profit margin vs. markup.

Compute mean, median, mode, variance, standard deviation, quartiles, and distribution charts.

Test primality, find prime factorization, list all divisors, and compute GCD and LCM.

Model investment compound growth with recurring deposits or calculate monthly loan amortization.

Customizable focus, short break, and long break timer with session tracking and audio alerts.

High-precision millisecond stopwatch with lap splits, delta times, and fastest/slowest highlights.

Count working days between two dates or add/subtract business days excluding weekends and holidays.

Generate cryptographically random numbers, unique draws, custom dice rolls (d4–d100), and coin flips.

Calculate Body Mass Index (BMI), Basal Metabolic Rate (BMR), and daily calorie/macro targets.