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Generate up to 1,000 UUID v4 values, with uppercase, hyphen, and brace options.

Generate one random string from letters, digits, and optional symbols.

Convert text to camelCase, snake_case, kebab-case, CONSTANT_CASE, and Title Case.

Encode or decode Latin-1 text as standard Base64.

Hash text with SHA-256 and copy the lowercase hex digest.

Compare two text blocks line by line, by row index.

Turn text into space-separated binary groups, or turn those groups back into text.

Calculate UTF-8 and UTF-16 byte size, KB, MB, and cookie and header budgets.

Convert a color between HEX, RGB, and HSL.

Build hue schemes from one hex color.

Preview five-field Unix cron schedules in an IANA timezone.

Beautify or minify CSS stylesheets in the browser.

Rewrite CSV between comma, semicolon, tab, and pipe without splitting quoted cells.

Convert CSV data to a JSON array of objects.

Generate SQL INSERT statements from CSV. Choose a SQL dialect, quote identifiers and strings, and control NULL and type inference.

Convert cURL commands to JavaScript fetch code for browsers or Node.js. Preserve request headers and bodies with optional secret redaction.

Convert a cURL request to Python requests code with headers, body and basic authentication. Redact common secrets before sharing.

Pull email addresses out of messy pasted text.

Replace every plain-text or regular-expression match, optionally ignoring case.

Guess a hash family from digest length and alphabet.

Encode text to space-separated hex bytes, or decode those bytes back to text.

Sign a message with HMAC-SHA256, HMAC-SHA1, or HMAC-SHA512 and compare a webhook signature.

Reindent HTML with 2 spaces, 4 spaces, or a tab.

Encode brackets, ampersands, and quotes as HTML entities, or decode them.

Convert an HTML table to CSV. Select a table, choose delimiters and control rowspan and colspan with repeated or blank covered cells.

Extract plain text from HTML, with paragraph breaks and link handling.

Turn an image file into a Base64 data URI. The file stays in the browser.

Show network, broadcast, netmask, wildcard, and host range for an IPv4 CIDR.

Compare two JSON values and list added, removed, and changed paths.

Pretty-print JSON with 2 or 4 spaces, or minify it.

Infer a JSON Schema from example JSON, including required fields.

Convert a JSON array of objects to CSV.

Generate nested TypeScript interfaces from example JSON, including array unions and optional fields.

Unwrap quoted JSON strings, including nested layers, into text or formatted JSON.

Decode a JWT header and payload. The signature is not checked.

Sort, reverse, number, trim, or join lines from a pasted block.

Shuffle lines with a Fisher-Yates pass from crypto.getRandomValues.

Generate placeholder sentences or paragraphs from a fixed word list.

Turn Markdown into HTML as you type, with an optional rendered preview.

Generate an MD5 checksum from text or a file and compare it with an expected digest.

Generate title, meta description, canonical, Open Graph, and Twitter tags.

Generate up to 1,000 MongoDB ObjectIDs and decode the embedded timestamp.

Turn text into international Morse code, or turn dots and dashes back into text.

Generate NanoIDs with a custom alphabet, length, bulk count, and collision estimate.

Convert one whole number between binary, octal, decimal, and hexadecimal.

Format numbers with thousands separators, decimals, currency, and locales including en-US, de-DE, and sv-SE.

Generate passwords from length, count, and character-set switches.

Score a password for length, character classes, and an entropy estimate.

Generate whole numbers between a minimum and a maximum.

Generate a rewrite rule or redirect for Apache, Nginx, Netlify, and Next.js.

List JavaScript regex matches with index and capture groups.

Remove duplicate lines while keeping the first copy in its original order.

Create a robots.txt file with allow, disallow, and sitemap rules.

Generate a SHA-1 digest from text or a file, in hex or Base64.

Create a SHA-512 digest from text or a file and compare an expected value.

Create a lowercase hyphenated slug from a title.

Uppercase SQL keywords and break before major clauses, or minify.

Escape or unescape quotes, newlines, and backslashes for JSON, JavaScript, or SQL.

Convert a temperature between Celsius, Fahrenheit, and Kelvin.

Sort lines of text alphabetically or in reverse.

Count words, sentences, a Flesch score, and the five most common words as you type.

Generate sortable ULIDs and read the embedded timestamp.

Turn text into Unicode escapes, or turn those escapes back into text.

Convert length, weight, volume, area, and digital storage between two units.

Convert Unix timestamps to dates and dates back to seconds or milliseconds.

Split a URL or query string into components and decoded parameters.

Percent-encode or decode text with encodeURIComponent.

Build campaign-ready URLs with UTM parameters.

Validate UUIDs and GUIDs, including version v1–v8, variant, and bulk lists.

Generate sortable UUID v7 values and read the embedded timestamp.

Count words, characters, sentences, paragraphs, and reading time.

Format, minify, and validate XML documents.

Turn absolute URL rows into a sitemap urlset.

Convert XML documents into readable JSON.

Convert JSON to 2-space YAML, or YAML maps and lists to JSON.