Free Online Tools for Developers & Everyone
A growing collection of 90+ powerful tools — text formatters, generators, calculators, PDF tools, and SEO utilities. Everything runs in your browser. Your data never leaves your device.
Categories
Browse by Category
Organized for quick access — find exactly what you need.
Text & Dev Tools
Format, encode, decode, and manipulate text and code with developer-focused utilities.
10 tools →
Generators
Generate placeholder content, fake data, slugs, names, colors, and gradients instantly.
8 tools →
Calculators
Financial calculators for SIP, EMI, tax, loans, and more. Plus utility calculators for percentages, dates, and conversions.
48 tools →
SEO Tools
Generate meta tags, OpenGraph data, robots.txt, sitemaps, and analyze keyword density.
7 tools →
PDF Tools
Merge, split, compress, rotate, watermark, convert, and edit PDF files directly in your browser.
17 tools →
Popular
Featured Tools
Our most popular and powerful tools, hand-picked for you.
JSON Formatter & Validator
Format, beautify, and validate JSON data instantly. Detect syntax errors, fix indentation, and explore nested structures with a clean tree view.
Regex Tester
Write, test, and debug regular expressions in real time. See matches highlighted, capture groups extracted, and get plain-English explanations of your pattern.
UUID Generator
Generate universally unique identifiers (UUIDs) in versions 1, 4, and 7. Create single or bulk UUIDs with options for formatting and case.
Password Generator
Generate strong, cryptographically secure passwords with customizable length, character sets, and entropy estimation. Create memorable passphrases too.
Lorem Ipsum Generator
Generate customizable placeholder text in paragraphs, sentences, or words for your designs, mockups, and development projects.
Color Palette Generator
Create harmonious color palettes from scratch or from a base color using color theory rules, with export options for design and development.
Favicon Generator
Generate favicons in all standard sizes from an image, text, or emoji. Download PNG favicons for browsers, apps, and bookmarks.
Image Converter
Convert images between PNG, JPG, JPEG, and WebP formats instantly in your browser. Batch convert multiple images with adjustable quality.
Percentage Calculator
Calculate percentages instantly — find what percent one number is of another, compute percentage increase or decrease, and solve any percentage problem with ease.
Age Calculator
Calculate your exact age in years, months, and days from your date of birth, and discover upcoming birthday countdowns and milestone dates.
Unit Converter
Convert between hundreds of units across length, weight, temperature, volume, speed, area, and more with instant real-time results.
SIP Calculator
Calculate returns on your Systematic Investment Plan (SIP). Estimate how much wealth your monthly SIP investments can generate over time.
Lumpsum Calculator
Calculate returns on a one-time lump sum investment. See how your money grows with compound interest over your chosen time period.
Mutual Fund Returns Calculator
Calculate the returns on your mutual fund investments via SIP or lumpsum. Compare both investment methods side by side.
Income Tax Calculator
Calculate your income tax under both the New and Old tax regimes for India. Compare tax liability and find the regime that saves you more.
EMI Calculator
Calculate your Equated Monthly Installment (EMI) for any loan. See monthly payments, total interest, and amortization schedule with visual charts.
Home Loan EMI Calculator
Calculate your home loan EMI. See monthly payments, total interest payable, and view the amortization schedule with principal vs interest breakdown.
Meta Tag Generator
Generate optimized HTML meta tags for your web pages to improve search engine visibility and social media sharing.
SERP Preview Tool
Preview exactly how your web page will appear in Google search results before publishing, and optimize your title and description for maximum click-through rates.
Merge PDF
Combine multiple PDF files into a single document with one click.
Split PDF
Split a PDF into separate files by selecting page ranges or extracting individual pages.
JPG to PDF
Convert JPG, PNG, and WebP images to a single PDF document.
PDF to JPG
Convert PDF pages into JPG or PNG images for editing or sharing.
Watermark PDF
Add text watermarks to every page of your PDF with custom styling and positioning.
Why Us
Why Choose ToolsCafe.net?
Built with simplicity, privacy, and speed in mind.
Privacy First
All processing happens in your browser. Your data never leaves your device — no uploads, no server-side processing, no tracking.
Lightning Fast
No server round-trips means instant results. Every tool runs locally with zero latency, even on slow connections.
Free Forever
Every tool is completely free with no hidden costs, premium tiers, or usage limits. Use as much as you need.
No Sign-up Required
Jump straight into using any tool. No accounts, no emails, no passwords — just open and start working.
Mobile Friendly
Fully responsive design that works beautifully on phones, tablets, and desktops. Use your tools anywhere.
90+ Tools & Growing
From text formatters and encoders to calculators, PDF tools, and SEO utilities — new tools are added regularly.
FAQ
Frequently Asked Questions
Got questions? We've got answers.