Short answers.

StreamSnag is a browser extension for Chrome, Edge and Brave. It saves the lecture you are watching, free. Pro then turns it into a document you can read, a study guide, a practice quiz and flashcards, each tagged with the minute it came from.

How an evening with it goes, step by step.

Yes. The downloader is free forever and open source, and nothing is held back to sell you Pro. There are no limits on files or on streams, no ads, no nagging to upgrade, and no account to sign up for.

What the free downloader does, and the one thing it cannot save.

StreamSnag runs on your computer. There is no account, no analytics and no ads, and we run no servers that could receive your lectures, transcripts or study material. The free core is open source, so the code can be read.

It needs access to the pages you visit because a lecture can be on any site, and seeing which video files a page loads is how it finds them. The privacy page says exactly what stays and what leaves, and there is a guide to studying from lectures without uploading them.

Two things, and only when you start them:

• The text you choose to send to your AI provider: a lecture's transcript and the text on its slides, with the speaker notes when the slides are a PowerPoint file. Slide pictures and the video are never sent. The smaller AI helpers in the popup (Ask your AI to find it, Summarize, Ask AI why) each show what they would send before they send it.
• Your Pro key, when it is checked with our payment provider.

Downloads come straight from the site you are on to your own folders.

A Claude or ChatGPT subscription you already have, or a key for Anthropic, OpenAI, Gemini, DeepSeek or OpenRouter. You choose one in Settings, and AI stays off until you do.

None of them is included in the StreamSnag price. On a subscription you already have there is nothing extra to pay; with a key you pay that provider, never us. What AI use costs.

The run stops and StreamSnag tells you why. Nothing is charged by us, and what you had already saved or made stays where it is. You can run it again later, or choose another AI account in Settings.

Free allowances are the usual cause: they can do part of a study pack and run out part-way. The estimate before each run shows how much AI use it will take.

Pages that play ordinary video files or HLS and DASH streams, including players built into a course page. Press play first, because many players only load the video once it starts.

When a page shows nothing, the popup offers Scan again and then Ask your AI to find it, which uses your own AI account and shows what would be sent first.

It does not work where the video is DRM-protected, and it does not try to. It runs in Chrome, Edge and Brave on a computer, not in Firefox and not on phones. The quickest way to find out about your course site is to try it, which is free.

Treat it like a careful classmate's notes. A study pack is written from facts found in the lecture, a checking pass removes what the lecture does not support, and every part points to its minute and slide. Where the guide adds an explanation from outside the lecture, it sits in a box labelled “Beyond the lecture”, and you can switch those boxes off. It can still be wrong, so check anything that matters against the lecture itself.

That depends on your course. Many let you keep recordings for your own study and some do not, and some universities restrict putting lecture material into AI tools. Your school's rules, the site's terms and copyright law still apply, and the choice is yours.

Pro is US$39.97 a year, US$4.99 a month, or US$99.95 once for life. The yearly plan saves a third against paying monthly. One key works on the computers you use and in both editions of StreamSnag. The first lecture is free from start to finish, with no card.

The study tools that use AI run on your own AI account. With a Claude or ChatGPT subscription you already have there is no extra charge: each run counts toward your plan's limits. With a pay-as-you-go key it was between a few cents and about US$1.50 a lecture on our own runs, depending on the provider. Either way it is between you and your AI provider, and never paid to StreamSnag. Transcription and the reading edition's layout need no AI at all.

Not from us. Downloading has no limits, and transcription runs on your own computer, so there are no minutes to count. The study tools that use AI run on your own AI account, and that provider may have its own limits and charges.

You can have a full refund within 7 days of buying, no reason needed, by replying to your receipt. That holds for the yearly plan, the monthly plan and the lifetime key. The key stops working when the refund is made. After 7 days a yearly or monthly plan can still be cancelled at any time and runs to the end of the year or month already paid for. A lifetime key has nothing to cancel. What you made stays yours and stays readable.

If you subscribe and later want the lifetime key, what you paid for Pro in the last 12 months counts toward it, up to the price of one year (US$39.97). Write to support@streamsnag.app. We send a code for the difference and cancel the subscription. It is done by hand, on request.