Percentage Calculator
PopularFind what X% of Y is, calculate percentage change and reverse percentages in seconds.
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Image Compressor
PopularShrink JPG, PNG and WebP files without losing visible quality.
Image Tools
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Password Generator
PopularCreate strong, secure random passwords in one click.
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Word Counter
PopularCount words, sentences, paragraphs and reading time.
Text Tools
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JSON Formatter
PopularPretty-print, validate and minify JSON — securely in your browser.
Developer Tools
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Convert length, mass, temperature, volume, area, speed and data.
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Resize images to exact dimensions, scales or target sizes.
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Your exact age in years, months and days — down to the second.
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Built to do one thing well
Percentage Calculator
PopularFind what X% of Y is, calculate percentage change and reverse percentages in seconds.
Productivity
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Convert length, mass, temperature, volume, area, speed and data.
Productivity
Use tool
Password Generator
PopularCreate strong, secure random passwords in one click.
Productivity
Use tool
JSON Formatter
PopularPretty-print, validate and minify JSON — securely in your browser.
Developer Tools
Use tool
Image Compressor
PopularShrink JPG, PNG and WebP files without losing visible quality.
Image Tools
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Crop images to any rectangle or preset aspect ratio.
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Why ToolCraft
A better way to do small tasks
Most tool sites trade your data for a calculator. We flipped the model: the tool is the product, and it works on your machine.
Private by design
Every tool runs in your browser. Text, images and calculations are never uploaded anywhere.
Instant results
No page reloads, no waiting on a server. Results update as you type.
One toolbox
Calculators, image tools, developer utilities and text tools — consistent, discoverable, reusable.
Easy on the eyes
A refined light and dark theme, thoughtful typography and motion that respects reduced-motion settings.
Built to scale
A clean tool registry means new tools drop in with one entry — and the architecture is ready for accounts later.
No account, no ads walls
Use everything for free. Ads, when they arrive, stay clearly labelled and never gate a tool.
How it works
From problem to result in three steps
No installs, no sign-ups, no learning curve.
01
Find your tool
Search or browse by category — or press / from anywhere to jump straight to search.
02
Use it instantly
Type, paste or upload. Results update live with validation, examples and copy buttons.
03
Copy or download
Grab your result with one click. Tools remember your favorites and recent usage locally.
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What the community is using
Percentage Calculator
PopularFind what X% of Y is, calculate percentage change and reverse percentages in seconds.
Productivity
Use tool
Your exact age in years, months and days — down to the second.
Productivity
Use tool
Convert length, mass, temperature, volume, area, speed and data.
Productivity
Use tool
Word Counter
PopularCount words, sentences, paragraphs and reading time.
Text Tools
Use tool
Password Generator
PopularCreate strong, secure random passwords in one click.
Productivity
Use tool
JSON Formatter
PopularPretty-print, validate and minify JSON — securely in your browser.
Developer Tools
Use tool
From the blog
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Guides, comparisons and tips
Fresh, practical writing from our editorial team.
Featured
Aug 14, 2026
·
5 min read
How to Compress Images Without Losing Visible Quality
Cut image file sizes by 80% or more while keeping photos looking sharp. Here is the exact workflow we use, with real numbers.
Aria Chen
Senior Tech Editor
Featured
Jul 28, 2026
·
5 min read
WebP vs PNG vs JPEG: Which Image Format Should You Use?
Stop guessing. Here is a decision tree for choosing between JPEG, PNG and WebP — with the actual size differences.
Aria Chen
Senior Tech Editor
Popular guides
All guides
Go deeper with long-form guides
Everything you need to master the tools you use.
tool guidesAug 5, 2026
The Complete Guide to Image Compression
Everything about shrinking image files: formats, quality math, workflow and the tools that automate it.
Aria Chen · 6 min
Open
tool guidesJul 28, 2026
The Complete Guide to Image Resizing
Pick the right dimensions for every use — web, email, social, print — and resize without losing quality.
Aria Chen · 6 min
Open
educationJul 20, 2026
The Complete Guide to Percentage Calculations
Every percentage formula you will ever need, worked through with real examples — from discounts to compound growth.
Marcus Webb · 6 min
Open
FAQ
Questions, answered
The things people ask us most — answered plainly.
Are the tools really free?
Yes. Every tool is free, requires no account and shows no paywall. Our model is advertising (clearly labelled) and affiliate links — never gating tools.
Is my data private?
Tools run in your browser. What you type, upload or calculate is processed locally and never sent to our servers. Favorites and settings are stored only on your device.
Do I need to install anything?
No. Everything is a web page. Bookmark the tools you use most or save them as favorites.
Which formats do the image tools support?
The image compressor, resizer, cropper and converter accept JPG, PNG, WebP, GIF and BMP, and can export JPG, PNG or WebP.
How can I support ToolCraft?
Share a tool with a friend, subscribe to the newsletter, or use an affiliate link if it genuinely helps you — no obligation either way.
Are the blog articles reviewed?
Every article is checked against the actual tool output and current sources, and updated when things change. Authors are named on every post.
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