Do I need to create an account?

No. All tools work without signing up. Just open a tool and use it.

Is my data sent to your servers?

No. Everything runs in your browser. Your files and text never leave your device.

Are these tools really free?

Yes. The site is free to use. No payments required.

Can I use these tools offline?

After you load a page once, many tools keep working without the network for things like text and numbers. Image and file tools need the page to load first.

Free Online Tools

Convert, calculate, and process — all in your browser. No sign-up, no uploads to our servers.

Browse by category

Image Tools

Convert, compress, and resize images

Image Compressor

Compress images in the browser. No upload, client-side only.

Image Format Converter

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

Image Resizer

Resize images by width and height. Runs entirely in your browser.

File Converters

Convert between file formats

JSON Formatter

Format and validate JSON. Pretty-print or minify.

CSV to JSON

Convert CSV text to JSON. No upload, client-side only.

JSON to CSV

Convert JSON array to CSV text in your browser.

XML Formatter

Format and indent XML. Validate structure.

Markdown Preview

Preview Markdown as HTML. Renders in the browser.

Unit Converters

Convert units of measurement

Unit Converter

Convert length, weight, temperature, and more.

Time Converter

Convert seconds, minutes, hours, days, and more.

Binary / Hex / Decimal Converter

Convert numbers between binary, hexadecimal, and decimal.

Data Size Converter

Convert between bytes, KB, MB, GB, TB.

Text Tools

Process and transform text

Text Case Converter

Convert text to uppercase, lowercase, title case, and more.

Word Counter

Count words, characters, and sentences in text.

Find and Replace

Find and replace text. Supports regex.

Reverse Text

Reverse text or lines. Reverse each line or the whole block.

Sort Lines

Sort lines alphabetically or numerically. A–Z, Z–A, or random.

Remove Extra Spaces

Remove extra spaces and normalize whitespace.

Remove Duplicate Lines

Remove duplicate lines from text. Keep first or keep unique.

Regex Tester

Test regular expressions against text. See matches in real time.

Text Diff

Compare two texts and see differences. Side-by-side or unified.

HTML Encoder / Decoder

Encode or decode HTML entities. & < > etc.

URL Encoder / Decoder

Encode or decode URL-encoded strings. Percent-encoding.

Slug Generator

Convert text to a URL-friendly slug (lowercase, hyphens, no special chars).

Morse Code Encoder / Decoder

Encode or decode text to Morse code. Runs in your browser.

Binary to Text / Text to Binary

Convert text to binary (ASCII) and binary to text.

Extract URLs from Text

Find and extract all URLs (and optionally emails) from text.

Remove Accents / Diacritics

Remove accents and diacritical marks from text (é → e).

Add Line Numbers

Add line numbers to each line of text.

Calculators

Math and conversion calculators

Calculator

Simple and scientific calculator.

Tip Calculator

Calculate tip and split the bill. Percentage or custom amount.

BMI Calculator

Calculate Body Mass Index from height and weight.

Percentage Calculator

What is X% of Y? What percent is X of Y? Increase/decrease by %.

Compound Interest Calculator

Calculate compound interest. Principal, rate, time.

Date Difference Calculator

Calculate the number of days between two dates.

Age Calculator

Calculate age from birth date to today or a specific date.

Roman Numerals Converter

Convert numbers to Roman numerals and Roman numerals to numbers.

Generators

Generate data and content

UUID Generator

Generate random UUIDs (v4) in the browser.

Lorem Ipsum Generator

Generate placeholder text for your designs.

Password Generator

Generate secure random passwords. Length, symbols, numbers.

Random Number Generator

Generate random numbers between min and max. Integers or decimals.

Color Palette Generator

Generate color palettes. Complementary, analogous, monochrome.

Fake Data Generator

Generate fake names, emails, phones, addresses. For testing.

Hash Generator

Generate SHA-256, SHA-384, SHA-512 hashes. Runs in browser.

Dice Roller

Roll one or more dice (d4, d6, d8, d10, d12, d20).

Coin Flip

Flip a virtual coin. Heads or tails.

Productivity

Utilities to get things done

Base64 Encode / Decode

Encode and decode Base64 text in the browser.

Timestamp Converter

Convert Unix timestamp to date and time. Or date to timestamp.

Color Converter

Convert between HEX, RGB, and HSL. Pick a color.

JSON Validator

Validate JSON syntax. See errors and fix.

List Randomizer

Randomize or shuffle a list. One item per line.

Find My IP

See your public IPv4 and IPv6 address. Fetched when you click.

Stopwatch

Simple stopwatch with lap times. Runs in your browser.

Countdown Timer

Count down from a set time. Minutes and seconds.

Why use these tools?

Client-side — Your data never leaves your device.
No accounts — Start using any tool immediately.
Free — No payments required.

Frequently asked questions

Do I need to create an account?: No. All tools work without signing up. Just open a tool and use it.
Is my data sent to your servers?: No. Everything runs in your browser. Your files and text never leave your device.
Are these tools really free?: Yes. The site is free to use and supported by ads. No payments required.
Can I use these tools offline?: After you load a page once, many tools keep working without the network for text and numbers. Image and file tools need the page to load first.