Free online tools that run in your browser, not on our servers
From merging PDFs to compressing images to converting units, KioTools brings 100+ everyday tools together in one place — no installs, no accounts, no waiting for uploads.
How it works
Pick a tool
Browse by category on the Tools page, or search for what you need.
Add your file or input
Drop in an image or PDF, or type/paste your text and options.
Get your result instantly
Processing happens in your browser — no queue, no waiting on an upload.
Download or copy your output
Save the file or copy the result, and you're done.
Who We Are
KioTools is an independent project focused on building a collection of useful, fast, and accessible tools for everyone.
The idea started from a simple need: many small everyday tasks online require jumping between different websites, creating accounts, dealing with ads or cluttered interfaces, and sometimes uploading personal files to servers with no clear idea of how they're handled.
About KioTools
KioTools is a free, all-in-one platform for practical online tools, built for the things people do dozens of times a week: shrink an image before emailing it, merge a couple of PDFs into one file, check a password's strength, or work out a loan payment.
The platform covers image, PDF, audio & video, text & code, design, calculator, business, and productivity tools — plus workspaces that chain several related tools into a single connected experience. Every tool runs directly in your web browser — there's nothing to download, no account to create, and no waiting on a server queue.