Why should I trust a tool made by one person I have never heard of?

You should not, on my word. Turn off your internet and convert an export: it finishes, which a tool sending your conversations somewhere could not do. That test does not require trusting me, and it is the only reason to believe any of this.

Is there a company behind LosslessChat?

No. It is one person, named on this page, with three previous products you can go and look at. Payments are processed by Dodo Payments as merchant of record.

What happens to my export after I convert it?

Nothing happens to it, because nothing ever leaves your browser. Closing the tab is the end of it — there is no copy anywhere else, including here.

You are about to hand a very private file to a stranger.

Trust · Who made this

That is the correct way to think about it, and it is worth saying out loud on the site that wants the file. Your chat export is one of the most revealing documents you own — what you were worried about, what you were treating, what you were being paid, what you were writing and not showing anyone yet. Handing it to a site you found on Google forty seconds ago should feel wrong.

So the tool is built so that you do not have to trust me. That is the whole design, and everything below is either something you can verify yourself or something I am telling you plainly because you cannot.

Who I am

My name is Swapnanil Nath. LosslessChat is made by me alone — there is no company behind it, no investors, no team, and no office. It is one person who has built and shipped software before:

doclinth.com — a managed PDF generation API. You give it a template and JSON; it gives you back a PDF.
deckio.app — AI exam preparation. It reads lecture notes, slides and video, and turns them into flashcards, quizzes and a revision path.
relayu.app — Instagram DM automation for small businesses.

What being one person means for you

It is fair to weigh both directions of that, so here is the honest version.

Against me: there is no security team, no independent audit, no compliance certificate, and no company that outlives me. If you are choosing a tool for an organisation that requires those things, this is not it, and I would rather say so than sell you something that fails your review later.

For me: there is no growth target that eventually requires selling data, no investor who needs the numbers to go up, no analytics department that wants to know what is in your export, and nobody to quietly sell the company to. A one-time $29 for a tool that runs on your own machine is the entire business model. There is no second act where the terms change.

The part you can check yourself

Every site handling private files promises it is safe. So do the ones that are not. My promising it should not move you at all — which is why the important claim here is one you can settle without me.

Turn off your wifi, then convert your export. It runs the whole way through, to a finished archive on your disk. A tool that was quietly keeping your conversations would need the network at exactly the moment you handed over the file, and it would break. This does not.

That works because the converter finishes loading onto your machine before you ever choose a file. A test runs the entire conversion with the network cut off, and a change that breaks it stops the release — so this stays true rather than being true on the day it was written.

The things you cannot check, stated plainly

There are a few, and pretending otherwise would undo the point of this page.

There are no analytics on this site. No Google Analytics, no tracking pixels, no session recording, no third-party scripts of any kind. You can confirm the absence with any ad blocker; you cannot confirm my reason for it.
The site has two server endpoints. One says the site is up. The other checks a licence key against the payment provider that issued it. Neither has ever received a conversation, and there is no third endpoint that could.
I never see your payment details. Payments are handled by Dodo Payments as merchant of record. Your card details go to them, not to me.
I have no way to recover anything for you. Nothing is stored, so if you lose your archive I cannot re-send it. That is the direct cost of the design, and it is the right trade.

Why this exists

OpenAI and Anthropic will both give you everything you have ever said to them. What they hand over is a file most people cannot open — messages nested inside a tree of identifiers, or a single web page too large to navigate. The data is all there and none of it is yours in any practical sense.

Every route out of that was a command-line script, a browser extension wanting permission to read the site you are logged into, or a service that wanted the file on its servers. For the most private document you own, those are three bad options. This is the fourth one.

Questions

3 answered

Why should I trust a tool made by one person I have never heard of?: You should not, on my word. Turn off your internet and convert an export: it finishes, which a tool sending your conversations somewhere could not do. That test does not require trusting me, and it is the only reason to believe any of this.
Is there a company behind LosslessChat?: No. It is one person, named on this page, with three previous products you can go and look at. Payments are processed by Dodo Payments as merchant of record.
What happens to my export after I convert it?: Nothing happens to it, because nothing ever leaves your browser. Closing the tab is the end of it — there is no copy anywhere else, including here.