Tools that never upload your files
Twenty browser-based utilities, calculators and games. Everything runs on your device — no account, no queue, no daily limit, and nothing sent to a server.
Tools
- Image CompressorDrop images in, pick a quality level, download smaller files. Nothing is uploaded.
- Image Format ConverterConvert between JPG, PNG and WebP without installing anything or uploading files.
- Image ResizerResize to exact pixels, or let the tool hit a target file size like 200 KB.
- PDF MergeCombine several PDFs into one, reorder them first, nothing leaves your device.
- PDF SplitExtract a page range, or burst a PDF into one file per page. Fully offline.
- Word CounterLive word, character and sentence counts, reading time and keyword density.
Finance
- Compound Interest CalculatorModel savings growth with regular deposits and see contributions vs interest year by year.
- Loan CalculatorMonthly payment, total interest, and what an extra payment each month would save you.
- Currency ConverterConvert between 150+ currencies with daily reference rates and a quick-reference table.
- Budget PlannerTrack income against expenses and check your split against the 50/30/20 rule.
- Tip CalculatorTip, total and per-person split — with uneven shares and country tipping norms.
Games
- Android appChroma QuestMatch a colour from memory, pull real colours out of your camera, and race a friend over a QR code.
- 2048Slide tiles, merge matching numbers, reach 2048. Keyboard and swipe controls.
- Tic-Tac-ToePlay against a perfect AI, an easy AI, or a friend on the same screen.
- SudokuFresh puzzles at four difficulties, with pencil notes, hints and mistake checking.
- Memory MatchThe classic concentration game in four sizes, with move and accuracy tracking.
- Typing Speed TestMeasure your WPM and accuracy over 15, 30 or 60 seconds. Live feedback as you type.
Why "nothing is uploaded" is the point
Most free online tools work the same way: you upload a file, a server processes it, and you download the result. It works, and it requires you to trust a company you have never heard of with a document you may not have read carefully yourself.
Browsers stopped needing that arrangement years ago. The File API, Canvas, Web Workers and WebAssembly can do image compression, PDF manipulation, encoding and parsing locally, at speeds that are usually faster than a round trip to a server would be. Every tool on this site is built that way, with one stated exception — the currency converter, which genuinely cannot compute an exchange rate without asking someone what it is.
The practical consequences: there are no file size limits imposed by us, no daily quotas, no processing queue at peak times, and no privacy policy question about what happens to your data, because your data never arrives. Open any tool, disconnect from the internet, and it still works.
Written for people, not for search engines
Every page here explains what the tool does, how to use it well, and — the part usually missing — what it does not do. The compound interest calculator tells you it ignores inflation and fees. The image compressor explains why your PNG got bigger. The typing test admits that consecutive attempts vary by five words per minute, so small improvements are noise.
That is a deliberate editorial position. A tool that overstates what it can do wastes your time more expensively than one that is simply slow.