Інструменти в браузері

Форматуйте й генеруйте приватно.

Безкоштовні інструменти в браузері. Без облікового запису.

Обрані інструменти

No favorited tools yet.

Популярне

Beautify, minify and validate JSON in your browser.

Розробник

Base64 Encode / Decode

Encode or decode Base64 text locally.

Розробник

URL Encode / Decode

Percent-encode or decode URL components.

Розробник

MD5, SHA-1, SHA-256 and more — computed locally.

Розробник

Generate UUID v4 identifiers in bulk.

Розробник

Password Generator

Create strong random passwords offline.

Розробник

Convert between Unix time and human-readable dates.

Розробник

Query String Parser

Parse URL query strings to JSON and back.

Розробник

Convert CSV tables to JSON objects and back.

Розробник

Color Converter

Convert between HEX and RGB color formats.

Розробник

Count words, characters and reading time.

Lorem Ipsum Generator

Generate placeholder text for mockups.

Turn titles into URL-friendly slugs.

QR Code Generator

Create QR codes from text or URLs locally.

Image to Base64

Convert an image file to a Base64 data URL.

Image Format Convert

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

Compound Interest & DCA

Estimate future value with compounding and monthly contributions — locally.

Loan Payment Calculator

Equal-payment or equal-principal loan schedules. Runs in your browser.

Compute NPV and IRR from a list of cashflows. No data leaves your device.

Price change and net P/L after buy/sell fees.

FX Converter (manual rate)

Convert amounts with a rate you enter. No live market quotes.

Interest Rate Converter

Convert between daily, monthly and annual rates (nominal / effective).

Installment Fee → APR

Turn advertised monthly installment fees into an approximate APR.

Усі інструменти

Розробник

Кодування та форматування

Beautify, minify and validate JSON in your browser.

Розробник

Base64 Encode / Decode

Encode or decode Base64 text locally.

Розробник

URL Encode / Decode

Percent-encode or decode URL components.

Розробник

MD5, SHA-1, SHA-256 and more — computed locally.

Розробник

Generate UUID v4 identifiers in bulk.

Розробник

Password Generator

Create strong random passwords offline.

Розробник

Generate random hex or alphanumeric strings.

Розробник

Convert between Unix time and human-readable dates.

Розробник

Decode JWT header and payload without sending tokens away.

Розробник

Test regular expressions with live matches.

Розробник

Encode or decode HTML special characters.

Розробник

Query String Parser

Parse URL query strings to JSON and back.

Розробник

Convert CSV tables to JSON objects and back.

Розробник

Beautify or minify XML in your browser.

Розробник

Break down a 5-field cron expression.

Розробник

Color Converter

Convert between HEX and RGB color formats.

Розробник

Number Base Converter

Convert numbers between binary, octal, decimal and hex.

Розробник

Текст

Підрахунок і перетворення

Count words, characters and reading time.

UPPER, lower, Title Case, camelCase and more.

Lorem Ipsum Generator

Generate placeholder text for mockups.

Find and Replace

Find and replace text, with optional regex.

Compare two texts line by line.

Turn titles into URL-friendly slugs.

Файли

Зображення, QR і колір

QR Code Generator

Create QR codes from text or URLs locally.

Image to Base64

Convert an image file to a Base64 data URL.

Image Format Convert

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

Contrast Checker

Check WCAG contrast ratio between two colors.

Фінанси

Локальні калькулятори

Compound Interest & DCA

Estimate future value with compounding and monthly contributions — locally.

Loan Payment Calculator

Equal-payment or equal-principal loan schedules. Runs in your browser.

Compute NPV and IRR from a list of cashflows. No data leaves your device.

Price change and net P/L after buy/sell fees.

FX Converter (manual rate)

Convert amounts with a rate you enter. No live market quotes.

Split tax-inclusive prices or add VAT to a net amount.

Interest Rate Converter

Convert between daily, monthly and annual rates (nominal / effective).

Inflation Purchasing Power

See how inflation changes purchasing power over years.

Installment Fee → APR

Turn advertised monthly installment fees into an approximate APR.

Money Formatter

Format numbers with locale currency styles and decimal places.

Як це працює

Усе працює в браузері. Обліковий запис не потрібен.

Choose LocalKit when you want free utilities without accounts or uploading text and files to a converter SaaS. Scripts load from this site only; there is no third-party analytics pixel on tool pages. Prefer LocalKit over random online paste sites when the payload is sensitive (tokens, IDs, private JSON).