A clean and practical online toolbox

Generate strong random passwords by length and character set with local history.

Turn text or URLs into QR codes with adjustable size and colors.

Record your screen with browser APIs and export the result locally.

Batch-generate random values by range, precision, and uniqueness for sampling or test data.

Create multiple UUIDs in-browser for API testing, fixtures, and placeholder records.

Shuffle a roster into random groups by group count or size, or pick a single winner.

Apply repeated text watermarks to local images without uploading them.

Compress images in the browser and compare the before and after result.

Extract copyable text from a local QR image to inspect links, notes, or Wi-Fi payloads.

Draft barcodes with multiple standards and export crisp SVG artwork right away.

Calculate text MD5 hashes and show lower/upper case variants.

Hash local files in chunks for dependable MD5 verification.

Calculate keyed HMAC hashes for MD5 and SHA variants.

Compute SHA1, SHA256, SHA512, and related hash values.

Encrypt and decrypt with AES using common modes and padding options.

Encrypt and decrypt text with the Rabbit stream cipher.

Handle DES and TripleDES text encryption and decryption.

Run RC4 encryption or decryption on input text.

Convert between plain text and Base64 quickly.

Convert text to Unicode escape sequences and back.

Encode and decode URL values safely for transport.

Show the current timestamp and convert between time strings and timestamps.

Add or subtract time from a date and measure date intervals.

View a given moment across a set of major world time zones.

Shift schedules by business days with optional holiday and makeup-workday overrides.

Normalize timestamp-heavy logs line by line into readable dates or raw Unix values.

Keep common engineering and daily units in one place for quick side-by-side conversions.

Draft invoice-ready English amount wording from a numeric money value.

Turn loose numeric lists into sum, average, and min/max summaries for quick budgeting.

Estimate monthly burden and total interest from loan principal, rate, and term.

Convert numbers into uppercase Chinese RMB wording.

Clean repeated entries, case differences, and noisy spacing into a tidier list.

Strip emoji and pictographic symbols from text for cleaner, formal plain-text output.

Validate Mainland China 18-digit ID numbers and extract birthday, age, and gender details.

Switch quickly between Simplified and Traditional Chinese for copy cleanup and regional variants.

Transcribe Chinese text into pinyin and initials for indexing, search, or note organization.

Switch quickly between singular and plural English nouns.

Convert text into upper, lower, title, or sentence case.

Improve spacing between Chinese, English, and numbers automatically.

Trim whitespace from the whole text or line by line.

Test whether a string matches a regular expression pattern.

Render Markdown into HTML and switch between code and preview.

Format, minify, and validate JSON content.

Sketch TypeScript interfaces from sample JSON before refining them by hand.

Format CSS and apply lightweight compression.

Format or compact JavaScript snippets for quick cleanup.

Beautify HTML or compress it into a tighter representation.

Format SQL statements for readability or compress them for transport.

Preview the next several execution times from a cron expression.

Split natural language or existing identifiers and shift them into common code naming styles.

Bridge HEX, RGB, and HSL formats with a live swatch for quick visual confirmation.

Connect to a WebSocket endpoint, send messages, and inspect logs.

Convert between Go structs and JSON skeletons.

Compile Less snippets and output the generated CSS.

Convert numbers across binary, octal, decimal, hexadecimal, and more.