Web utilities

Count characters, words, and lines instantly.

Change case and remove extra spaces.

Sort lines alphabetically, in reverse, or by natural number order.

Remove repeated lines while keeping the first occurrence.

Replace literal text with case-sensitive or insensitive matching.

See which lines were added or removed between two documents.

Create readable URL slugs from multilingual titles.

Preview Markdown safely and export sanitized HTML.

Encode and decode HTML special characters.

Convert text to and from Unicode code points.

Extract email addresses or web URLs from text.

Turn lines into numbered lists, bullets, or a JSON array.

Generate Lorem ipsum paragraphs for layout testing.

Convert letters and numbers to international Morse code.

Check JSON and format or compact it.

Encode or decode a URL component.

Convert UTF-8 text to and from Base64.

Convert between dates and Unix timestamps.

Convert quoted and multiline CSV records into JSON.

Export object arrays as CSV with spreadsheet formula protection.

Validate and convert between YAML and JSON.

Validate XML structure and format it for reading.

Calculate SHA-256, SHA-384, or SHA-512 for text or files.

Generate one or more UUID v4 identifiers securely.

Convert arbitrarily large integers between bases 2–36.

Inspect URL query parameters, including repeated keys.

Read JWT headers and payloads without verifying signatures.

Test patterns in an isolated worker with a time limit.

Look up JSON values using property names and array indices.

Convert bytes and decimal or binary storage units.

Compare JSON values while ignoring object key order.

Convert UTF-8 text to and from Data URLs.

Convert length, weight, temperature, and six more unit groups.

Convert HEX, RGB, and HSL colors.

Create a QR image from text or a URL.

Generate passwords with secure randomness.

Calculate arithmetic, parentheses, and powers safely.

Calculate percentages, percentage change, and portions.

Calculate days, weeks, and hours between calendar dates.

Calculate completed years and elapsed days on a chosen date.

Display local date and time in another time zone.

Start, pause, and record elapsed lap times.

Set minutes and seconds and see when the countdown finishes.

Choose entries at random without repeating them.

Generate secure random integers within a chosen range.

Roll a chosen number of dice with custom sides.

Calculate and simplify fractions with exact integer arithmetic.

Simplify ratios and solve proportions.

Calculate the final price after a percentage discount.

Calculate a bill with a tip and the amount per person.

Change an image's width and height.

Compress and save images as JPEG, PNG, or WebP.

Crop a precise area using coordinates and dimensions.

Rotate images by 90, 180, or 270 degrees.

Mirror images horizontally or vertically.

Add a text watermark with adjustable color and opacity.

Apply grayscale, sepia, brightness, or contrast filters.

Extract dominant colors and copy their HEX values.

Create image Data URLs after stripping metadata.

Preview isolated SVG artwork and export it as PNG.