Convert files without sending them anywhere.
Every tool on this site runs locally in your browser tab. The files you select are processed on your own device and are not uploaded for conversion — pick a tool below and get started.
Image Converter
Convert one image or a batch to PNG, JPG, or WebP, resize by width or height, and download a ZIP.
MULTIPLE → ONEMerge PDF
Combine PDFs or rearrange one: page ranges, reorder, rotate, and remove pages.
IMAGES → ONE PDFImage to PDF
Put images on A4, Letter, or image-sized pages, in the order you choose.
Why browser-based conversion?
Most online converters work by uploading your file to a server, converting it there, and sending it back. That means your files — which might include private documents, personal photos, or business records — pass through someone else's server.
Workbench does the conversion directly in your browser using your device's own processing power. The files you choose are not uploaded to us, nothing is kept once you close the tab, and the tools keep working even if you lose your internet connection after the page has loaded.
Being precise about the edges: the page itself is an ordinary website. It loads its fonts from Google Fonts, the two PDF tools load a JavaScript library from a public CDN, and our hosting provider records the usual technical request logs. Your files are simply never part of any of that. The privacy policy sets out the detail.
Guides
Choosing a format, working out how many pixels you actually need, understanding why a JPEG softens each time it is re-saved, checking whether a tool really does the work locally — these are the things that decide whether a conversion goes well. The guides explain them in plain language, whether or not you use the tools here.
- PNG vs JPG vs WebP — what each format is genuinely good at, and why transparency often settles the decision for you.
- Image resolution, DPI and print size — why changing a DPI setting alone adds no detail, and the one formula behind every resolution question.
- How browser-based conversion keeps files private — what local processing does and does not protect, and how to verify the claim yourself.