Digital Tools

Choose the right calculator

Local utilities for code, images, QR codes, networks, and random values.

Password Generator

Generate a random password on your device. Choose its length and character set; copy it when ready.

QR Code Generator

Create a static QR code for text, a URL, or Wi-Fi credentials. Download it as PNG or SVG and test it before use.

QR Code Scanner

Scan a QR code from an image or your camera. Decoding runs in your browser; check any link before opening it.

JSON Formatter

Format, minify, or validate JSON. Optional key sorting changes key order but preserves JSON value types.

XML Formatter

Format, minify, or validate XML. Network access, DTDs, and external entities remain disabled.

Unix Timestamp Converter

Convert Unix seconds or milliseconds to a date, or a date to a timestamp in the selected time zone.

UUID Generator

Generate one or more cryptographically secure UUID version 4 values in the selected format.

Lorem Ipsum Generator

Generate bounded placeholder text by words, sentences, or paragraphs.

Uppercase Lowercase Converter

Convert text to upper, lower, sentence, title, camel, Pascal, snake, or kebab case.

Random Number Generator

Draw integers within inclusive bounds, with optional repeats and sorting.

Color Palette Generator

Build a complementary, analogous, or monochrome palette. Optional image extraction stays in your browser.

Image Resizer

Resize a local image in your browser. Choose dimensions, format, quality, and aspect-ratio behavior.

Subnet Calculator

Enter an IPv4 address and CIDR prefix to calculate network, broadcast, usable ranges, and mask.

Password Strength Checker

Check a password locally in your browser using length and simple pattern checks. No password is sent to the server.

Base64 Encoder Decoder

Encode or decode standard or URL-safe Base64 text.

URL Encoder Decoder

Encode or decode URL text or analyze a full URL.

JSON To XML Converter

Convert between JSON and XML using the existing bounded, protected parser.

JSON To Yaml Converter

Convert between JSON and supported simple YAML without tags or aliases.

Csv To JSON Converter

Convert CSV and JSON with a comma, semicolon, or tab delimiter.

Regex Tester

Test a bounded regular expression against text with optional case and multiline flags.

HTML Formatter

Format, minify, encode, or decode HTML as escaped text.

Hash Generator

Generate a digest from text; optionally verify an expected digest or hash a local file with SHA-256.

Random String Generator

Generate random strings with a chosen length, count, character set, prefix, and suffix.

Text Compare Tool

Compare two texts line by line with optional case or whitespace normalization.

Color Converter

Convert a color between HEX, RGBA, and HSLA.

CSS Gradient Generator

Generate a validated linear or radial CSS gradient with optional color stops.

Jpg To Png Converter

Convert a local JPG, PNG, or WebP image in your browser to PNG, JPG, or WebP.

Image Size Calculator

Calculate print dimensions, pixel dimensions, aspect ratio, or a missing image dimension.

Download Time Calculator

Estimate theoretical download time from file size, nominal speed, and efficiency.

Bandwidth Calculator

Convert between speed, data volume, and time, including several continuous streams.