About privotools
privotools is a free collection of browser-based utility tools built around one principle: your files should never have to leave your device just to get a simple task done. No uploads. No servers. No trade-offs.
Why This Exists
So I built privotools to solve that, once and for all. Every tool here runs entirely in your browser — your files are processed on your own device and never sent anywhere. No upload step. No server receiving your data. If you disconnected from the internet after the page loaded, most tools would still work perfectly. They don't need the internet. They just need your browser.
It's a solo project — no team, no investors, no corporate backing — built and maintained by one person based in Thailand. Just a simple idea I couldn't find done properly anywhere else: tools that actually respect the people using them.
How It Works
When you open a tool on privotools, your browser downloads a small piece of JavaScript — the tool itself. Everything after that happens on your own machine. Your files are read from your local storage directly into browser memory. Processing happens using your own device's CPU. The result is written back to your device.
This is made possible by modern browser APIs that have matured enormously over the past decade: the File API for reading local files, the Canvas API for image processing, the Web Crypto API for cryptographically secure random number generation, and WebAssembly for running complex algorithms at near-native speed — all without any server dependency.
In practical terms: if your internet connection dropped after the page loaded, most tools would still work perfectly. Because they do not need the internet. They just need your browser.
Our Privacy Commitments
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No server ever receives your files. Our infrastructure serves only the HTML, CSS, and JavaScript that make up the tool itself. Your actual files — images, documents, text, passwords — never leave your device. There is no upload endpoint to even send them to.
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No data is stored or logged. We have no database of user files. No processing logs. Nothing to subpoena, nothing to breach, nothing to sell. We cannot hand over what we never received.
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No account required. You do not need to sign up, log in, or provide an email address to use any tool on this site. Open the tool, use it, done.
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Only anonymous analytics. The only third-party data we collect is aggregate, anonymous page-view counts — we know a page was visited, not by whom or with what files. We also display Google AdSense advertising, which may set cookies for personalisation. You can decline this in the cookie banner.
Tools Available
Compress JPEG, PNG, and WebP images and convert between formats entirely in your browser. Supports batch processing of up to 20 files at once, with adjustable quality settings before downloading. Your photos never leave your device.
Open PixLite →Count words, characters, sentences, and paragraphs instantly. Also calculates estimated reading time, keyword density, and Flesch readability score. Useful for writers, students, and anyone working within a word or character limit.
Open WordLens →Generate cryptographically strong passwords using the Web Crypto API. Choose from random character strings, multi-word passphrases, numeric PINs, or pronounceable memorable passwords — with a real-time strength meter showing entropy and estimated crack time.
Open KeyForge →Seven browser-based utilities in one: JSON Formatter and Validator, Base64 Encoder/Decoder, SHA Hash Generator (SHA-1 through SHA-512 via the Web Crypto API), URL Encoder/Decoder, JWT Decoder with expiry checking, Unix Timestamp Converter, and a live Regex Tester with match highlighting. Your code and tokens never leave your browser.
Open DevKit →Format and beautify HTML, CSS, JavaScript, and JSON for readability — without sending your source code to any external service.
Compare two versions of any text and see exactly what changed, line by line. Ideal for reviewing document drafts or config file differences.
Who Uses privotools?
Browser-based tools are useful any time you want to get something done quickly — without handing your files to a service you do not know. In practice, the people who find privotools most useful tend to be:
- Bloggers and content creators who compress images before uploading to a CMS and want no file size restrictions or upload delays
- Writers and students working within word count limits for essays, applications, or editorial submissions
- Developers and designers who need to process files without risk of proprietary assets or API tokens touching a third-party server
- Privacy-conscious users who handle sensitive documents — legal, medical, financial — and want to be certain those files go nowhere
- Anyone working on a mobile device who needs a quick utility without installing an app
Get in Touch
Got a question, found a bug, or have an idea for a new tool? We would genuinely like to hear from you. Reach us through the contact page or directly at privotools.contact@gmail.com.