A Convertio alternative that never uploads your files
Convertio converts between hundreds of formats by uploading files to its servers, with size limits on the free tier. InstantTools converts the common formats — images, PDFs, data files — directly in your browser with no size-based paywall.
Where your file goes
Convertio is a server-side converter: files upload to their infrastructure, convert there, and download back. The free tier caps file size, with subscriptions lifting limits. Files are removed per their stated policy.
InstantTools converts on-device. The practical limit is your machine's memory rather than a pricing tier, and conversion speed does not depend on upload bandwidth — a 200 MB video never has to leave your laptop to get compressed.
The same jobs, done locally
Honest questions
Does InstantTools support as many formats?
No — Convertio's long tail (e.g. obscure ebook or CAD formats) is broader. InstantTools covers the high-frequency conversions; for those, it does the job without the upload and without size-tier pricing.
Why is local conversion often faster?
Server conversion pays for the file to travel twice — up, then down. Local conversion skips both trips, which dominates total time for large files on ordinary connections.
Verify it yourself
Open your browser's developer tools, switch to the Network tab, and use any InstantTools file tool. After the page and its engine load, you will see no request carrying your file. That check takes thirty seconds and beats any privacy policy.