Student Toolkit

Pretty-print and beautify JSON with custom indentation.

Convert JSON into well-formed, indented XML.

Convert JSON documents to clean, readable YAML.

Flatten a JSON array of objects into a CSV spreadsheet.

Count words, characters, sentences, and reading time.

Count characters and bytes with limit presets.

Convert text between 11 different letter cases.

Generate placeholder text for mockups and designs.

Analyze readability with Flesch score and syllable stats.

Split delimited text into aligned columns and re-join it.

Prettify and align Markdown tables with column alignment.

Spell out text using the NATO phonetic alphabet.

Obfuscate text with ROT13, zero-width spaces, or leetspeak.

Generate lorem ipsum text wrapped in HTML tags.

Beautify and indent messy HTML markup.

Beautify or minify CSS with safe string handling.

Design linear, radial, and conic gradients visually.

Visually build flexbox layouts and copy the CSS.

Design CSS grid layouts with live preview.

Translate common Tailwind utility classes into plain CSS.

Convert between px, rem, em, %, pt, vw, and vh.

Convert images between PNG, JPEG, and WebP in your browser.

Convert images to Base64 data URLs and back again.

Convert any image into ASCII text art in your browser.

Analyze keyword frequency and density in your text.

Convert between CSV and JSON with delimiter and header options.

Convert YAML to JSON and JSON to YAML.

Convert XML to JSON and JSON to XML using the browser's DOMParser.

Convert Markdown to HTML with a live preview.

Convert numbers between binary, octal, decimal, hex, and custom bases.

Convert length, weight, temperature, area, volume, speed, and data-size units.

Convert CSV into a Markdown or HTML table with alignment options.

Parse simple SQL INSERT INTO statements into JSON rows.

Convert text to binary or octal codes and back.

Convert between numbers and Roman numerals.

Convert CSV data into well-formed XML with custom tag names.

Convert TOML configuration files to JSON and back.

Convert between milliseconds, seconds, minutes, hours, days, and weeks.

Convert bytes, KB/MB/GB/TB with binary (KiB/MiB) or decimal units.

Convert between base64/data URI text and image previews.

Convert numbers into English words, with a currency mode.

Convert HTML markup into clean Markdown syntax.

Generate SQL INSERT statements from CSV data.

Convert between spreadsheet column numbers and letters.

Convert between Unix timestamps and human-readable dates.

Format a date using custom patterns and Intl presets.

Convert a datetime across multiple IANA timezones at once.

Convert dates and durations to and from ISO 8601 format.

Count business days between two dates, excluding holidays.

Live countdown to any date and time.

Convert a list of Unix timestamps to readable dates in bulk.

Convert colors between HEX, RGB, HSL, HWB, OKLCH and CMYK.

Extract and normalize colors from CSS gradients or lists.

Convert IPv4 to decimal/hex/binary, and expand or compress IPv6.

Convert between URL query strings and JSON, with nested bracket support.

Convert between decimal, scientific, and engineering notation.

Convert .env files to JSON, YAML, or shell exports.

Convert identifiers between camelCase, snake_case, kebab-case, and more.

Convert a curl command into JavaScript fetch() code.

Convert a JS object literal into strict, valid JSON.

Format and indent SQL queries for readability.

Format and indent GraphQL queries and mutations.

Convert indentation between tabs and spaces.

Render Markdown into a printable page and save it as a PDF.

Turn pasted HTML into a print-ready page you can save as PDF.

Get word, character and paragraph counts for text-based documents.