You spend an evening working through a question bank with ChatGPT. Next morning the campus wifi drops and none of it is there. Losto takes the share link and keeps the whole conversation - every answer, table, formula and diagram - on your device.
Free. No account. Nothing uploaded anywhere.
Thermodynamics - Unit 3 solved
18 turns · 12 min
Why does RuBisCO lose specificity?
6 turns · 4 min
Scaling ArchUnit with Nebula
2,542 words · 6 code blocks
Saves from
The problem
Share links expire
Images vanish first
Screenshots are useless
Losto keeps the copy
Every answer, code block, table and diagram - copied to your device the moment you paste the link, before anything can expire.
Saved this week
Last 7 daysHow it works
No extension to install, no account to make. Losto is a web app you can add to your home screen.
Copy the share link
Hit Share in ChatGPT, Claude or Perplexity and copy the link. Or grab the URL of any blog post or docs page.
Paste it into Losto
It pulls the full conversation - questions, answers, code blocks, tables, LaTeX - and copies every picture onto your device before the links expire.
Read it anywhere
On the bus, in a basement lab, mid-flight. Search the full text, or flip it into question cards and quiz yourself.
Genuinely offline
The whole app is cached, not just the text. Open it in airplane mode and every saved chat, diagram and clip is there.
Pictures kept, not linked
Diagrams, screenshots and video are copied into your device's storage at import. When the original link expires, yours still works.
Study mode
Every question you asked becomes a card. Read it, reveal the answer, mark it known or for review, and get a confidence score.
Search inside answers
Full-text search across everything you have saved, with matching snippets. Works with no connection.
Blogs and docs too
Paste a tech article and Losto keeps the writing and the code blocks, drops the nav and newsletter boxes, and credits the author.
Yours to take
Export any chat as Markdown, or the whole library as one JSON file. No lock-in, no export fee, no account to delete.
What it reads
Losto reads one link at a time, only when you paste it, and only where the site's own robots.txt allows. Plenty of chats are assembled inside your browser and are not in the page at all. When a link cannot be read, Losto says so and walks you through copying it across, which takes a few seconds.
| Source | What you get |
|---|---|
| ChatGPT share links | Full conversation, code, tables, maths, images |
| Blogs, docs, Medium | Article text, code blocks, images, author and date |
| Pasted text | Anything you copy yourself, split back into questions and answers |
| Claude, Perplexity and the rest | Tried first. Most build the chat in your browser, so Losto shows you how to paste it across |
| ChatGPT images | OpenAI does not publish these in share links - add the file yourself in one tap |
| Logins, paywalls, bot checks | Never. Losto obeys robots.txt and bypasses no access control, ever |
The only request Losto makes on your behalf is fetching a link you paste, and the result goes straight to your device. Delete a chat and it is gone. Uninstall and everything goes with it. That is the whole design, not a setting you have to find.
Read the privacy noticeAdd it to your home screen and it behaves like any other app - except it keeps working when the signal does not.
Open Losto