Thirty free utilities built to keep users' files on their own device.
AdeptBay gives developers, students, and businesses text, developer, security, calculator, and career tools with no sign-up, no upload, and no watermark. Most tools run entirely in the browser, and any tool that needs a server deletes files automatically within two hours.
- Product
- AdeptBay
- Type
- Our own product
- Platform
- Next.js on Vercel and Cloudflare
- Status
- Live
How the product is built, in numbers
What we set out to fix
Everyday utilities are some of the most used pages on the web, and some of the worst. Formatting a JSON payload or decoding a token usually means pasting it into a slow, ad-heavy site and sending it to a server you know nothing about.
- Production payloads, tokens, and documents are uploaded to unknown servers by default
- Pages are slow and ad-heavy, with the actual tool buried below the fold
- Sign-up walls and watermarks stand in front of ten-second tasks
- Tools rarely say where they fail, so a wrong answer looks the same as a right one
What we built and why
We made privacy a property of the architecture rather than a promise in a policy. If a file never leaves the device, there is nothing to leak.
The browser does the work
Parsing, hashing, encoding, and conversion run in the user's tab, using native browser APIs, Web Crypto for hashing, and WebAssembly where near-native speed matters. Nothing is uploaded, and the claim is testable: switch off Wi-Fi and the in-browser tools keep working.
A server path only where a browser cannot cope
For work that genuinely needs a server, files go straight to object storage through a link that expires in fifteen minutes, are processed, and are deleted by a storage lifecycle rule within two hours. Every such tool says so on the page.
A shipping bar every tool must clear
Each tool loads in under 1.5 seconds on a mid-range phone, works on a 360-pixel screen, beats existing options at something specific, completes real tasks without an account, and documents its limitations. A tool that misses any of these does not ship.
Benchmarks you can reproduce
Performance figures are measured on a stated reference machine, an Intel i5-6300U, as the median of eight runs after warm-up, and re-run each quarter. A wrong answer is treated as the most serious class of bug, and every fix is logged in the public changelog.
A roadmap decided by a scoring model
Candidate tools are scored on search demand, lasting usefulness, weakness of the current alternatives, business value, and build cost. Forty points and above ships this quarter, so the catalogue grows where it is most useful rather than where it is easiest.
Everything on this page is live. Open AdeptBay and check it for yourself.
The practices this product drew on.
Let us look at your architecture.
Two ways to start, both of them short. Bring the problem, not a specification — the first useful thing we do is tell you what we would build and roughly what it costs.
Book an architecture call
Fifteen minutes, no deck. We map your problem to an approach and tell you what a realistic scope and budget look like.
- A specific technical recommendation
- A budget band you can plan against
- An honest answer if we are the wrong fit
Send a written brief
Prefer to write it down? Send us the shape of the problem and we will reply with a first take, usually under 12 hours.
- Goes straight to an engineer, not a sales inbox
- We reply with an approach, not a brochure
- Links to repos, docs, and screenshots welcome
or email hello@folrik.com