Free Online Tools for Everyday Tasks
General online tools and utilities for everyday tasks
No account required. Many tools process files locally in your browser.
Calculators
Quick calculators for everyday percentage, tax and price questions.
Calculation Tools
Percentage Calculator
Calculate a percentage of a value, work out percentage changes, and increase or decrease values by a percentage.
VAT Calculator
Add VAT to a net amount or extract the net amount and included VAT from a gross amount.
Unit Price Calculator
Compare package sizes, quantities and prices on the same basis to see which offer is really cheaper.
Images
Simple tools for working with images.
Image Editing Tools
Image Resizer
Resize JPG, PNG, and WebP images to precise dimensions.
Image Editor
Draw, crop, resize and annotate PNG, JPEG and WebP images.
Tools for common PDF tasks.
PDF Tools
Merge PDF
Combine multiple PDF files in your chosen order.
Text
Compare text quickly and clearly.
Text Tools
Text Compare
Compare two texts line by line and clearly identify added, removed, and unchanged content.
Data
Format and inspect structured data like JSON and XML.
Data Formatting & Validation
JSON Formatter
Format, validate, inspect, and convert JSON.
XML Viewer
Inspect XML, explore its structure, and edit supported values.
Find the right tool for your task
Start with the result you need, rather than the name of a file. A question about amounts or proportions belongs with Calculators; a picture that needs visual changes belongs with Images. If several finished documents should become one, look under PDF. These are different jobs even when they are part of the same project.
Choose Text when you need to inspect changes between two written versions. Choose Data when the structure of JSON or XML matters as much as the values it contains. For a task involving several categories, finish one step and check its result before moving on. You do not need to turn a small job into a complicated workflow.
Practical tools, directly in your browser
fourwww focuses on specific tasks that can be handled without creating an account. Open the relevant tool, supply the information it needs, and review the result. Each workspace keeps its options close to the task instead of requiring you to learn a larger application first.
Image editing, PDF merging, text comparison and the JSON/XML tools process the supplied files or content locally in the browser. This describes their processing, not a promise about every part of the website. Keep original files where relevant and check downloaded or copied results before using them in another application. The tools support your work; you remain in control of the final choice.