Eliminating the Privacy Risks of Online File Conversion
Every day, millions of creators, developers, and businesses upload sensitive tax documents, private family photos, and proprietary manuscripts to anonymous cloud converter websites. ConvertStuff was built to change that forever.
The Problem with Legacy Cloud Converters
Traditional converters force you to upload your files to remote third-party cloud servers. Your private data is stored in temporary server disks, processed on shared machines, and exposed to data breaches, crawler scraping, and server downtime.
The ConvertStuff Client-Side Solution
We leverage modern WebAssembly (WASM), HTML5 Canvas, and the Web Audio API to compile native conversion engines directly into your web browser. Your files are processed locally inside your computer's RAM with zero server uploads.
Our Four Core Engineering Principles
Zero Network Uploads
No confidential files, images, or audio tracks ever leave your local device. Verify with browser DevTools.
No Paywalls or Daily Limits
Because conversions execute on your device's hardware, we incur zero server computing costs and pass 100% free access to you.
Peer-Reviewed Accuracy
Every tool is audited against strict format specifications (AP/APA guidelines, RFC 4122 UUID, W3C standards).
Open & Transparent
We publish how each tool works, its known limits, and steps you can follow to confirm nothing is uploaded.
The ConvertStuff Editorial Team
Our guides and comparisons are written by the team that builds ConvertStuff. Here is how we work. The full process is in our editorial policy.
Written by the people who build the tools
Guides are written and maintained by the ConvertStuff editorial team, the same small team that builds and tests the converters. They are published under the team name rather than individual bylines.
Claims we can check
When a guide says a conversion keeps or loses something, that comes from how the format is specified and from running the conversion ourselves. When we compare other services, we say which facts came from their own published pages.
Comparisons that include competitors
Our "best of" roundups list other services, including paid ones, when they do a job better than we do. We say where ConvertStuff fits and where it does not.
Corrected when things change
Prices, limits and features change. Each guide carries its last-updated date, and we revise it when a tool we cover changes. Corrections can be sent through the contact page.
Explore Our Research & Standards
Read our guides, our editorial policy, and how to check our privacy claims yourself.