About imissfiles

What this is

imissfiles is a set of 56 file tools that run entirely in your web browser. Converting an iPhone photo into something Windows will open, pulling the text out of a scan, turning a photographed table into a spreadsheet, shrinking a PDF to fit an email: the ordinary work a file needs before it can go somewhere, done without handing the file to anyone.

Why it works this way

Almost every free converter online works by upload. You give a document to a server, it processes it, you download the result. That was a technical necessity once. It is not any more, and it never stopped being a strange arrangement for the documents people actually convert: statements, contracts, identity documents, medical letters, payslips.

Browsers can now do this work locally. libheif, compiled to WebAssembly, decodes iPhone photographs. Tesseract, also WebAssembly, recognises text in images. pdf-lib manipulates PDF documents and PDF.js renders their pages. fflate builds zip archives, which is what Word, Excel, and PowerPoint files actually are underneath. All of it runs in a tab, on your machine. So the site is built that way, and the claim is verifiable rather than promised: open the Network panel in developer tools and run a conversion.

Why it exists

The specific moment was dropping a signed lease onto a converter to combine it with an inventory, watching the progress bar, and realising I had no idea where that file had just gone. Not that anything bad happened: almost certainly nothing did. But the honest answer to "where is my lease now" was "on a machine belonging to a company I had not heard of ten seconds ago, for a period I was never told."

That is a strange thing to do with a document, and it is a completely normal thing that millions of people do every day, because the alternative was inconvenient. Once browsers could do the work locally, the inconvenience stopped being necessary, and the habit stayed anyway.

Who made it

One person, as a side project, because these tools are ones I wanted and did not want to upload files to get. There is no company, no funding round, and no team. That means bugs get fixed when I find them or when someone tells me, and new tools appear when I have time to build them properly rather than on a roadmap.

How it is paid for

Display advertising, and nothing else. Hosting is inexpensive precisely because no server does any file processing: the site serves static pages and the work happens on your device. There is no premium tier, no account system, and no API selling access to documents. If a tool saved you time, there is an entirely optional tip link.

Ads are placed away from the working area of each tool and hidden while a tool is running, so a click never lands somewhere you did not intend.

What it does not do

Being straight about the limits: very large files are constrained by how much memory your browser gives a tab, so something a server would handle may fail here. Some conversions are genuinely lossy, and the tool pages say so rather than implying a perfect round trip. A scanned PDF has no text layer, so text extraction returns nothing on one: that needs optical character recognition, which is a different engine.

What is not coming

No accounts. No email capture. No "Pro" tier that holds a tool back until you pay. Those are the obvious ways to make a site like this earn more, and each one would undermine the only thing that makes it worth using. A site with no account cannot leak your account. A tool that is free for everyone has no reason to meter you.

The full record of what has changed and when is in the changelog. The guides explain the things worth understanding rather than just doing. The privacy policy covers ads and analytics in detail, and the terms say plainly what the tools do and do not promise.

What is coming

If there is something you keep needing and cannot find here, say so: [email protected] or @imissfiles on X. Requests from people who actually use the tools are what decide what gets built next.