Got tired of "free" tool sites that upload your files — so I built ones that don't

Got tired of "free" tool sites that make you sign up or quietly upload your files just to resize an image or format some JSON. So I built Nonkera — 49 tools, no account, most of it processed locally in your browser.

nonkera.com

The pattern that got old

Every time I needed to do something quick — resize a photo before uploading it somewhere, format a blob of JSON, generate a password, merge a couple of PDFs — I kept landing on the same kind of site: create an account, sit through an upload progress bar, wait for a server to hand back a result, sometimes hit a paywall halfway through. For a five-second task. And for some of that — a password, a scanned ID, a personal photo — I didn't love the idea of it touching someone else's server at all.

So Nonkera works the other way. Most tools run entirely in your browser using the Web APIs already built into it (Canvas for image work, native JSON parsing, the File API for PDFs) — nothing gets uploaded, there's nothing to sign up for, and there's no server round-trip to wait on.

You don't have to take my word for it

This is the part I actually want people to try, not just read: open your browser's DevTools, click the Network tab, then use one of the tools — resize an image, format some JSON, generate a password. Watch the Network panel while you do it. For most tools, nothing carrying your file or text goes out over the wire. The result appears instantly because it was never sent anywhere to begin with.

A few tools are the honest exception — currency conversion needs live exchange rates, for instance — and I've tried to be upfront about which ones those are rather than blur the line.

What's actually in there

49 tools right now, across five categories:

• Documents — PDF merge, split, and compression; CSV/JSON conversion
• Images — resize, compress, convert formats, SVG optimization
• Developer tools — JSON formatting/validation, regex testing, hash generation, a GraphQL-to-TypeScript converter, Base64 and URL encoding
• Productivity — word/character counters, password generation, QR codes, timestamp and timezone conversion
• Calculators — percentage, tip, loan, mortgage, BMI, GPA, unit conversion, and more

New tools go up most months — if there's something you keep reaching for a sketchier site to do, I'd genuinely like to hear about it.

Try it

nonkera.com — free, no account, no waiting.