GUI Tools — Free Online Tools

Hot

Base Converter

Convert numbers between bases 2 and 64 in real time, switch bases without page reload, and copy results instantly.

Currency Converter

Fetch latest exchange rates and convert major currencies instantly, with swap and manual refresh.

Unit Converter

Convert mass, length, volume, area, speed, pressure, plus temperature, time, energy, power, data size, angle, and frequency.

Checksum Verifier

Calculate text/file hashes with SHA-256, SHA-1, SHA-384, SHA-512, and MD5, then compare with expected values.

Text to Speech

Convert text to speech instantly using your browser's built-in voice synthesis. Supports multiple voices, speed and pitch control.

Schedule Planner

Visual canvas with AI planning, task dependency links, auto-scheduled dates from work hours, and Gantt chart

Emoji List

Filter by keyword or tag, click to copy. Find the perfect emoji in seconds!

PDF Tools

Merge, split, compress, rotate PDFs or convert between PDF and images — all processed locally in your browser.

Files

Checksum Verifier

Calculate text/file hashes with SHA-256, SHA-1, SHA-384, SHA-512, and MD5, then compare with expected values.

Image Editor

Compress / crop / rotate / mirror / resize / convert: upload an image, adjust compression quality, crop interactively, then rotate, flip, resize, and convert - all done inside your browser.

PDF Tools

Merge, split, compress, rotate PDFs or convert between PDF and images — all processed locally in your browser.

Text

Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text instantly. Choose from paragraphs, sentences, or words mode, set a custom count, and copy with one click.

Online Markdown

Write and preview Markdown online with live rendering, clean HTML output, and quick copy actions.

Text Diff Checker

Compare two text blocks and highlight deleted, added, and changed content line by line.

Text to Speech

Convert text to speech instantly using your browser's built-in voice synthesis. Supports multiple voices, speed and pitch control.

Word & Character Counter

Real-time counting of words, characters and paragraphs — perfect for editors and writers!

Encode

Barcode Generator

Generate CODE128, EAN13, UPC-A and more, with style controls and clean PNG/SVG exports.

Base64 Encoder/Decoder

Convert text or images to Base64, or decode Base64 strings back to readable text.

JWT Decoder

Paste a JWT token to decode the Header and Payload, check expiry status — everything runs in your browser.

Morse Code Encoder/Decoder

Turn text into Morse code or decode it back. Standard Morse is used for ASCII, while CJK characters are preserved with reversible Unicode blocks.

QR Code Generator

Create QR codes for text, URL, Wi-Fi and contacts, with custom styles, logo upload, and PNG/SVG download.

URL Encoder/Decoder

Encode and decode URLs in real time, including UTF-8 text, emoji, and query parameters. Paste and start immediately.

Convert

Base Converter

Convert numbers between bases 2 and 64 in real time, switch bases without page reload, and copy results instantly.

CSV Converter

Upload or paste CSV, edit it as a table, and export JSON, CSV, or XLSX.

Currency Converter

Fetch latest exchange rates and convert major currencies instantly, with swap and manual refresh.

Data Format Converter

Data format converter for YAML, JSON, XML, and TOML with conversion, formatting, and validation.

Text Converter

Convert Traditional/Simplified Chinese, switch full-width and half-width characters, change letter case, and reformat to Title Case, camelCase, or snake_case in one place.

Unit Converter

Convert mass, length, volume, area, speed, pressure, plus temperature, time, energy, power, data size, angle, and frequency.

Network

CIDR Calculator / IPv4 to CIDR

Supports both CIDR calculation and IPv4 to CIDR conversion, with fast network, broadcast, and CIDR list results from IPv4 addresses, subnet masks, or start/end ranges.

URL Shortener

Turn long URLs into short, shareable links. Links unused for 180 days are auto-deleted.

Domain WHOIS Lookup

Enter a domain name to instantly look up WHOIS information including registrar, expiry date, and name servers.

Share

Emoji List

Filter by keyword or tag, click to copy. Find the perfect emoji in seconds!

Open Graph Preview

Preview social sharing cards, adjust Open Graph fields, and copy ready-to-use meta tags before publishing a page.

Design

Info Board

Create on-site info boards with text, images, mixed slides, and image uploads for notices, promotions, and live displays.

Chart Generator

Pick a chart template, enter values, and export your chart in PNG or SVG. Supports up to 10 values per chart.

Color Palette

Adjust colors online and convert HEX, RGB, and HSL instantly in one focused workspace.

Color Mixer

Blend two colour codes, fine-tune the ratio, and generate in-between shades you can use immediately in UI work.

WCAG Contrast Checker

Instantly check text-to-background contrast ratios and WCAG 2.x AA/AAA compliance with live preview and color improvement suggestions.

CSS Gradient Generator

Build linear, radial, and conic CSS gradients visually. Adjust colours and stops, then copy the ready-to-use CSS.

CSS Shadow Generator

Visually design box-shadow and text-shadow with multi-layer support, real-time preview, and one-click CSS copy.

Dev

Cron Expression Tool

Visually build and parse Cron expressions with instant next-run previews

JSON Formatter

Format, beautify and minify your JSON in one click! Syntax checking included — essential for API development.

Regex Generator

Build regular expressions from checkboxes: required character types, allowed sets, length range, flags, and instant test.

UUID / GUID Generator

Generate UUID v4 or v7 in bulk, copy individually or all at once, and inspect any UUID to reveal its version and embedded timestamp.

XML Formatter

Beautify or minify XML in one click with live syntax validation — works with config files, RSS, SOAP, SVG and more.

Safe

AES Encrypt/Decrypt

Advanced browser-side AES tool with custom key, IV, mode, padding, and Base64/Hex output for integration testing and troubleshooting.

MD5 Hash Generator

Generate MD5 instantly with 16/32 length and upper/lowercase output options.

Password Generator

Generate strong random passwords in seconds. Your credentials stay secure in your browser.

Time

Countdown Timer

Set a target date and time to track remaining or elapsed days, hours, minutes, and seconds, so no important date slips by.

Pomodoro Timer

Manage your work and rest cycles with automatic mode switching between work, short break, and long break sessions to build a productive focus rhythm.

Schedule Planner

Visual canvas with AI planning, task dependency links, auto-scheduled dates from work hours, and Gantt chart

Stopwatch/Countdown

A timing board that combines stopwatch and countdown with split logs, countdown alerts, and hotkeys.

Unix Timestamp Converter

Convert Unix seconds/milliseconds and date-time instantly, with ISO and local outputs for smoother debugging.

World Clock

Track current time across multiple cities with UTC offsets, so cross-time-zone meetings are easier to line up.

Math

Fitness Calculator

Enter height, weight, and goals to calculate BMI, recommended water intake, daily calories, and jogging/walking exercise targets — all in one place.

Percentage Calculator

Enter A and B to solve 6 common percentage scenarios at once: A of B%, ratio, reverse base, percent change, and plus/minus percent.

Statistics Calculator

Paste numbers or import CSV, XLS, XLSX to get mean, median, standard deviation, quartiles, histogram, and frequency table instantly.

Fun

Bobei Divination

Choose a deity, toss moon blocks, and get Sheng/Jiao/Yin results with a reserved deity photo area.

Counter

Create multiple counters with increment/decrement, reset, keyboard shortcuts, drag sorting, and auto-save.

Dice Roller

Roll a 3D die with a real toss-and-land animation, so it feels like the cube actually hits the table.

List Grouper & Shuffler

Paste a list, then randomly sort or split it into groups — results are easy to copy

Lucky Wheel

Can't decide? Enter your options and let the wheel spin!

Nickname Generator

Built for pen names, gamer tags, and online aliases. No real surname needed. Add a prefix, set the length, and generate stylish nicknames instantly.

Scoreboard

An online scoreboard designed for sports competitions. Display both teams' scores, match time, and inning number in real-time. Customize team names and scoring rules.

Which tool would you like to use first?

Hot

Base Converter

Currency Converter

Unit Converter

Checksum Verifier

Text to Speech

Schedule Planner

Emoji List

PDF Tools

Files

Checksum Verifier

Image Editor

PDF Tools

Text

Lorem Ipsum Generator

Online Markdown

Text Diff Checker

Text to Speech

Word & Character Counter

Encode

Barcode Generator

Base64 Encoder/Decoder

JWT Decoder

Morse Code Encoder/Decoder

QR Code Generator

URL Encoder/Decoder

Convert

Base Converter

CSV Converter

Currency Converter

Data Format Converter

Text Converter

Unit Converter

Network

CIDR Calculator / IPv4 to CIDR

URL Shortener

Domain WHOIS Lookup

Share

Emoji List

Open Graph Preview

Design

Info Board

Chart Generator

Color Palette

Color Mixer

WCAG Contrast Checker

CSS Gradient Generator

CSS Shadow Generator

Dev

Cron Expression Tool

JSON Formatter

Regex Generator

UUID / GUID Generator

XML Formatter

Safe

AES Encrypt/Decrypt

MD5 Hash Generator

Password Generator

Time

Countdown Timer

Pomodoro Timer

Schedule Planner

Stopwatch/Countdown

Unix Timestamp Converter

World Clock

Math

Fitness Calculator

Percentage Calculator

Statistics Calculator

Fun

Bobei Divination

Counter

Dice Roller

List Grouper & Shuffler

Lucky Wheel

Nickname Generator

Scoreboard