6 tools
Utilities
Small everyday utilities — formatters, generators, and calculators. Every tool runs in your browser, so nothing you paste or open is ever sent anywhere.
- JSON Formatter
Pretty-print or minify a JSON file.
- XML Formatter
Pretty-print or minify an XML file.
- Hash Generator
Verify a file's integrity — SHA-256, MD5, and more, in one report.
- Base64 Encoder/Decoder
Encode any file to base64, or decode base64 back to a file.
- Favicon Generator
Turn a logo into favicon.ico plus every size a site needs.
- QR Code Generator
Turn a URL or short message into a scannable QR code.
Why it matters that these run locally
For the PDF and image tools, working on your own device is mostly about speed and about not handing your documents to a stranger. For these, it is often sharper than that.
A JSON file from a work system holds real records. An XML export holds whatever the system exported. A hash is usually being taken of a file precisely because it matters whether that file has changed. Pasting any of that into a site that posts it to a server means it has left your control — and most such sites do exactly that: the formatting happens in a backend, and the result comes back.
Nothing here does. JSON Formatter, XML Formatter, Hash Generator, Base64 Encoder and Decoder, QR Code Generator, and Favicon Generator all run inside the page. Open your developer tools, watch the Network tab, and nothing leaves. That is checkable in a way a privacy policy is not.
What each one is for
The formatters take a file that is technically valid but unreadable — one enormous line, or indentation that changes halfway down — and lay it out so you can find things in it. They also tell you when the file is not valid, and where, which is often the actual reason you opened one.
Hash Generator computes a checksum for any file. The everyday use is verifying a download: the site you got it from publishes a SHA-256, you compute the same hash locally, and either they match or they do not. Uploading the file to check it would rather defeat the point.
Base64 Encoder and Decoder converts between raw files and base64 text — the encoding that carries binary data through channels which only accept text, like email attachments, JSON payloads, and data URIs in CSS. Worth being clear about: base64 is not encryption and gives you no privacy at all. It is reversible by design, and reversing it is this tool's other half.
QR Code Generator turns a link or a short piece of text into a scannable PNG. It is the one tool on the site that takes no file — you type what you want encoded. The code is built by an encoder written for this site rather than fetched from an image service, which is precisely why what you encode reaches nobody.
Favicon Generator builds a proper multi-size .ico from an image, which is still what browsers and crawlers probe for at /favicon.ico, even on sites that also ship an SVG icon.
More of these are coming
This is the newest group on the site and the shortest. What gets built next is largely what people ask for — if the small utility you needed is not here, say so.