SWS
SWS Universe
Simple browser tools
Practical free utilities

Useful tools that work in your browser

Free browser-based tools for images, text, percentages, QR codes, passwords, UUIDs, colors and everyday calculations.

🖼️ Images ✍️ Text % Calculations 🔐 Generators
Tool grid

Choose a tool

Each card explains the tool. The large icon on the right is the only link.

Images

Image Converter

Convert JPG, PNG and WebP images directly in your browser.

Resize images, adjust quality and download results without creating an account.

Open tool
PDF

Image to PDF

Create a PDF from JPG, PNG and WebP images.

Combine multiple images into one downloadable PDF from your browser.

Open tool
Text

Text Tools

Count words, characters and lines, then clean up text formats.

Useful for drafts, posts, descriptions, notes and quick cleanup.

Open tool
Math

Percentage Calculator

Calculate percentages, discounts, increases and changes.

Solve everyday percentage questions with clear inputs and direct results.

Open tool
Units

Unit Converter

Convert length, weight, temperature, volume, speed, time and data.

Switch between common units without creating an account.

Open tool
QR

QR Code Generator

Create QR codes for text, links, email, phone, SMS and WiFi.

Generate a scannable code directly from the browser.

Open tool
Security

Password Generator

Generate random passwords with length, numbers and symbols.

Create stronger passwords and copy them quickly.

Open tool
Format

Case Converter

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

Clean formatting for names, titles, slugs and copied text.

Open tool
Reading

Reading Time

Estimate reading, narration, speech and presentation time.

Paste text and get quick timing estimates.

Open tool
Time

Timer & Stopwatch

Use a countdown timer, stopwatch, lap times and quick presets.

Simple time tracking directly in the browser.

Open tool
Color

Color Tools

Pick colors and convert HEX, RGB and HSL values.

Useful for design checks, CSS values and palette work.

Open tool
Dev

UUID Generator

Generate UUID v4 identifiers.

Create random IDs for testing, development and documentation.

Open tool
Guides

Guides

Read short explanations for formats, calculations and tool decisions.

Learn when to use JPG, PNG, WebP, safe passwords, percentages and reading time.

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Guides

Short explanations to use the tools better

Guide

JPG vs PNG vs WebP

Compare transparency, file size, quality and compatibility.

Guide

Password Length and Entropy

Understand how length and character variety affect password strength.

Guide

How to Calculate Percentages

Simple formulas for discounts, increases and percentage changes.

Guide

How Reading Time Is Calculated

How words per minute estimate reading, narration and presentation time.

FAQ

Frequently asked questions

Are the tools free?

Yes. The visible tools in this version can be used without registration and without installing extra software.

Do I need an account?

No. They are designed so you can open the page, use the tool and get a result.

Are my files uploaded?

For file-based tools, local browser processing is preferred whenever possible.

Why does this version show fewer tools?

This version prioritizes practical utilities, short guides and a clearer review experience.