Welcome to OneTooly, a completely free, browser-based platform built for students, developers, designers, and everyday users who need fast and reliable online tools without the hassle of downloading software. Whether you need to convert a WEBP image to PNG, merge two PDF files, generate a QR code, or compress an image — OneTooly has you covered, all from one place.
OneTooly was built out of a simple frustration: most online tools are either paid, require sign-ups, or bombard you with ads before you can do anything. We wanted to change that. Our goal from day one has been to provide every user — whether a student working on an assignment, a freelancer managing client files, or a developer building a project — with powerful, easy-to-use tools that work instantly in the browser.
Our mission is to make digital productivity tools universally accessible. We believe that a person in any part of the world should be able to compress a PDF, convert an image, or create a QR code without paying a subscription fee or installing any software. That is the core principle behind everything we build at OneTooly.
OneTooly is a growing collection of free online tools organized into easy-to-navigate categories:
Unlike many online converter tools, OneTooly processes your files entirely within your browser using JavaScript. This means your files are never sent to our servers. When you upload an image or PDF, it stays on your device — we simply use your browser's built-in capabilities to do the conversion or processing. When you close the tab, the file is gone. No data is stored, no account is required, and no file is ever shared with third parties.
We take privacy seriously because we understand that your documents and images may contain personal or sensitive information. Our commitment is simple: what happens in your browser, stays in your browser.
All tools on OneTooly are free to use — no subscription, no premium tier, no hidden fees. We are funded through non-intrusive advertising, which allows us to keep the lights on and continue developing new tools. If you find our tools helpful and want to support us, you can make a voluntary donation using the "Support Us" button. Every bit of support goes directly toward improving the platform and adding new tools.
We also have a free Android app available for download so you can access OneTooly tools directly from your phone. Whether you're on a desktop, laptop, tablet, or mobile, our tools are designed to work seamlessly across all screen sizes.
OneTooly is a passion project built by a developer who wanted a single, reliable place for all common file-conversion and utility tasks. Our tools are built using standard web technologies — HTML, CSS, and JavaScript — along with trusted open-source libraries like PDF.js, jsPDF, and Fabric.js. We do not use any proprietary back-end processing. This means our tools are fast, private, and work even on slow internet connections since most processing happens locally.
We are always open to feedback. If a tool is not working correctly, if you have a suggestion for a new tool, or if you have found a bug, please use our Contact page to get in touch. We read every message and continuously improve the platform based on real user feedback.
Thousands of users visit OneTooly every month to get their daily tasks done faster. From students converting assignment documents to developers testing image pipelines, our community is diverse and growing. We believe in building tools that are not just functional, but genuinely enjoyable to use.
Follow our blog for tips, tutorials, and updates on new tools. We regularly publish guides like "How to Reduce PDF File Size Without Losing Quality," "The Difference Between JPG, PNG, and WEBP," and "5 Ways Online Tools Can Save You Hours Every Week." Subscribe to stay up to date.