Toolbly

Free & Private Online Tools for Every Task

Your one-stop destination for a comprehensive collection of secure, client-side utilities. Whether you need a no-upload file converter, a private PDF merger, or a secure JSON formatter, our tools work directly in your browser without ever sending your data to a server.

Why Choose Our Platform?

In a digital world where data privacy and speed are paramount, our tools stand apart by design. Our entire suite is built on a "client-side" architecture, which means all data processing happens directly on your device. Your files and information are never uploaded to our servers, offering an unparalleled combination of privacy, performance, and reliability that is impossible to achieve with standard online tools.

Absolute Privacy

Your files and data are processed locally in your browser. Nothing is ever uploaded to our servers, ensuring your information remains completely confidential.

Instantaneous Results

Operations are immediate, with no waiting for server responses or network latency. Everything happens right on your device for a lightning-fast experience.

Offline Functionality

Once a tool's page is loaded, it can often be used without an active internet connection, providing reliability wherever you are.

155+

Tools Available

9

Categories

0ms

Server Latency

100%

Private & Secure

How Our Tools Work: A Privacy-First Approach

Every tool on this website runs entirely in your browser using modern web technologies like JavaScript and WebAssembly. We don't need servers to process your data because we never see it. This simple, transparent, three-step process guarantees both your privacy and the tool's speed, setting us apart from traditional server-based services.

1. Select Your Tool & File

Choose from our wide array of tools and select your file. The application and all its logic load directly and run entirely in your browser.

2. Process on Your Device

All conversions, calculations, and data manipulations happen locally, using your computer's own processor. Your sensitive data never leaves your machine.

3. Download Instantly

Your output is ready immediately. There's no waiting for servers, no upload progress bars, and no network latency. Just save your result instantly.

Effortlessly convert a wide array of file types directly in your browser. From images like PNG to JPG, documents like DOCX to PDF, or data formats like JSON to CSV, our tools provide instant, private conversions without any uploads. Whether you are a developer handling data, a designer optimizing assets, or a student preparing a report, our file converters streamline your workflow by performing all operations locally on your device, ensuring both speed and complete data privacy.

Take full control of your PDF documents with our comprehensive suite of secure, client-side tools. Merge multiple PDF files into a single, cohesive document, split a large PDF into smaller, more manageable parts, or extract specific pages. You can also compress your PDFs to reduce their file size for easy sharing without sacrificing quality, or convert images and other documents into the universally-accepted PDF format. All operations are processed in your browser, guaranteeing the confidentiality of your documents.

A complete suite for all your image manipulation needs, from basic editing to advanced conversion. Convert between formats like JPG, PNG, and the modern WEBP, compress images for optimal web performance, generate a full set of favicons for your website, or extract a color palette from a photo to inspire your design. You can also create before-and-after comparison sliders, calculate aspect ratios, and add watermarks. Because every tool runs in your browser, your images are never uploaded, ensuring total privacy.

An essential toolkit designed to streamline your development workflow. Format and validate JSON, encode or decode Base64 and URL strings for safe data transmission, test and debug complex regular expressions in real-time, generate secure hashes (SHA-1, SHA-256), or convert Unix timestamps to human-readable dates. These fast, client-side utilities provide instant results without ever sending your data or code to a server, making them a secure choice for any project.

Enhance your web projects with our powerful collection of code generators, simulators, and utilities. Generate essential meta tags for SEO and social sharing, build responsive typography with our CSS clamp() calculator, create CSS-only tooltips and gradients, or test your website's responsiveness across multiple device viewports at once. All code is generated instantly in your browser, helping you build better websites faster.

Manipulate, analyze, and format text with ease using our comprehensive set of text-based utilities. Count words and characters for content writing, convert text between different cases (e.g., uppercase, title case), sort lines alphabetically or by length, remove duplicate entries from a list, or generate Lorem Ipsum placeholder text for your designs. These tools are perfect for writers, editors, developers, and anyone who works with text regularly.

A complete and easy-to-use set of converters for all your everyday measurement needs. Quickly and accurately convert between different units of length (meters, feet, miles), weight (kilograms, pounds), temperature (Celsius, Fahrenheit), volume (liters, gallons), speed (km/h, mph), and data storage (MB, GB). All calculations are performed instantly in your browser, providing a fast and reliable resource for students, engineers, and professionals.

Make informed financial decisions with our simple yet powerful calculators. Estimate the real-time cost of a meeting to encourage efficiency and productivity, generate a full loan amortization schedule to understand your payments over time, or calculate the impact of a salary sacrifice on your pension contributions and take-home pay. These tools provide clarity on complex financial scenarios, right in your browser.

Solve complex mathematical problems with our suite of powerful calculators. From plotting functions on a graph to performing advanced matrix operations like finding determinants and inverses, our tools provide the accuracy and speed needed for students and professionals in STEM fields. All calculations are performed securely in your browser.

From the Blog

Dive deeper into the technologies that power our tools, explore best practices for your projects, and learn more about digital privacy in our original articles and guides.

The Ultimate Guide to SEO Strategies to Improve Your Website's Visibility

October 20, 2025

An in-depth guide covering everything from keywords and on-page SEO to off-page strategies and the importance of user experience. Learn how to rank higher on Google and drive more organic traffic to your site.

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The Developer's Deep Dive into JSON: A Guide to Mastery

October 19, 2025

Go beyond the basics of JSON. This guide explores the nuances of JSON syntax, data types, parsing strategies, and best practices for using it effectively in modern web APIs and applications, ensuring your data is both lightweight and robust.

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Base64 Encoding: The Complete Technical Guide for Modern Developers

October 19, 2025

Base64 is everywhere, from data URIs in CSS to email attachments. This article explains what Base64 is, why it's not encryption, how it works under the hood by converting binary data into a 64-character subset of ASCII, and when you should (and shouldn't) use it.

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Unlocking PDF Power: The Ultimate Guide to Splitting, Merging, and Compressing

October 19, 2025

PDFs are universal, but managing them can be a pain. This guide dives into the practical techniques for manipulating PDF files. Learn how to split large documents into manageable chapters, merge multiple reports into a single file, and compress PDFs for easy sharing—all using client-side tools that protect your privacy.

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The Ultimate Guide to Image Compression and Web Formats (JPG, PNG, WEBP, AVIF)

October 19, 2025

JPG, PNG, GIF, WEBP, AVIF... what's the difference, and which should you use? This definitive guide explores the trade-offs between image quality and file size, explaining the use cases for lossy vs. lossless compression and helping you choose the perfect format for every situation.

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A Gentle Introduction to Regular Expressions (Regex) for the Terrified

October 19, 2025

Regex looks like Martian poetry, but it's an incredibly powerful tool for pattern matching. This guide demystifies the basic concepts of regular expressions, including character sets, quantifiers, and groups, with simple, practical examples.

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