Tools

Calculate a percentage, a share, or a percentage change.

Create a QR code locally from text or a URL.

Resize a local image and export PNG, JPEG, or WebP.

Calculate a shift duration, including overnight shifts and unpaid breaks.

Format, validate, and inspect JSON in your browser.

Count calendar days and completed years between two dates.

Convert time, length, temperature, and weight in one place.

Convert integers between binary, octal, decimal, and hexadecimal.

Calculate mean, median, minimum, maximum, sum, and range.

Simplify a whole-number ratio and calculate its proportions.

Count words, characters, lines, and approximate sentences.

Convert uppercase, lowercase, title case, and code naming styles.

Sort lines, remove duplicates, trim whitespace, or remove empty lines.

Replace literal text with optional case sensitivity.

Turn a title into a clean lowercase URL slug.

Securely pick an item or shuffle a list on your device.

Run a local countdown with work and break presets.

Measure elapsed time and record laps locally.

Design a color gradient and copy ready-to-use CSS.

Inspect token headers and payloads without uploading them.

Encode Unicode text into a Base64 string.

Decode Base64 into readable UTF-8 text.

Safely encode text for a URL component.

Decode percent-encoded URL components.