About CozyToolz

CozyToolz is a growing collection of free online tools for everyday jobs: merging a PDF for a form, shrinking a photo to fit an upload limit, grabbing a YouTube thumbnail, or working out a loan EMI.

We started CozyToolz because many tool sites are slow, covered in pop-ups, or ask you to upload private documents to unknown servers. We wanted the opposite: calm pages, clear instructions, and tools that do the work on your own device whenever possible.

How our tools work

Our PDF, image and audio tools use modern browser technology (JavaScript, WebAssembly and the Web Audio API) to process files locally. When you choose a file, it is read by your browser and the result is created on your device. We do not receive a copy.

Calculators and text tools also run entirely in your browser. The YouTube thumbnail tool loads public thumbnail images directly from YouTube’s image servers.

What we offer today

We currently offer 41 tools across PDF, image, YouTube, audio, text, developer and calculator categories, and we add new ones regularly. If there is a tool you would like to see, please tell us.

How CozyToolz is funded

CozyToolz is free to use. We may show advertising to cover hosting and development costs. Ads never block a tool from working, and we never sell your files or personal data.