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Onhand: Chat with PDFs, Answers Highlighted version history - 10 versions

Onhand: Chat with PDFs, Answers Highlighted by ramaway

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Onhand: Chat with PDFs, Answers Highlighted version history - 10 versions

  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 0.4.20

    Released Nov 12, 2026 - 6.21 MB
    Works with firefox 140.0 and later
    • Long PDFs stay fast: highlights and search in a book of hundreds of pages no longer time out, and the viewer uses much less memory.
    • PDF pages keep loading when you switch to another tab.
    • Onhand now waits for a page or PDF it opened to finish loading before reading it.

    Source code released under Apache License 2.0

    Download Firefox and get the extension
    Download file

  • Older versions

    Version 0.4.19

    Released Nov 12, 2026 - 6.2 MB
    Works with firefox 140.0 and later
    • PDFs that a publisher or course page shows inside the page now open in Onhand's viewer, and the text around them can be highlighted.
    • When highlights keep missing, Onhand stops retrying sooner and answers with what it has.
    • PDF search finds text whether quotes and dashes are typed straight or curly.

    Source code released under Apache License 2.0

    Download file

  • Version 0.4.18

    Released Nov 10, 2026 - 6.2 MB
    Works with firefox 140.0 and later
    • Select text on a page, right-click it and pick "Explain with Onhand" to ask about just that part.
    • Highlights land on more pages: course sites and web apps, pages in other languages, and PDFs where the quoted words differ slightly.
    • Copy or download a session's highlights, notes and answers from the ⋯ menu.

    Source code released under Apache License 2.0

    Download file

  • Version 0.4.17

    Released Nov 8, 2026 - 6.17 MB
    Works with firefox 140.0 and later
    • Highlights now land in tabs the browser put to sleep and in PDFs it is still opening.
    • When a page action keeps failing, Onhand stops retrying and answers with what it has.
    • Setup explains a rejected API key, or a country Onhand Free doesn't serve, before your first question.

    Source code released under Apache License 2.0

    Download file

  • Version 0.4.16

    Released Nov 6, 2026 - 6.17 MB
    Works with firefox 140.0 and later
    • Open a PDF saved on your computer by picking the file when Onhand asks.
    • A new conversation suggests three questions that fit the page. Click one to ask it.
    • Answers about PDFs and homework take fewer steps, so they arrive sooner.

    Source code released under Apache License 2.0

    Download file

  • Version 0.4.15

    Released Nov 3, 2026 - 6.16 MB
    Works with firefox 140.0 and later
    • Voice now tells you before it starts that it runs on your own OpenAI API key, instead of failing after you click it.
    • Starting ChatGPT sign-in a second time brings you back to the sign-in tab that's already open.

    Source code released under Apache License 2.0

    Download file

  • Version 0.4.14

    Released Oct 30, 2026 - 6.16 MB
    Works with firefox 140.0 and later
    • After each answer, Onhand suggests a next question in the input box. Press Tab to use it, or turn this off in Settings.
    • Gemini API keys now use Gemini 3.8 Flash, and running out of Google's free-tier requests shows a clear message instead of an error code.

    Source code released under Apache License 2.0

    Download file

  • Version 0.4.13

    Released Oct 26, 2026 - 6.01 MB
    Works with firefox 140.0 and later
    • Signing in with ChatGPT works again. OpenAI stopped offering GPT-5.5 to ChatGPT accounts, so Onhand now uses GPT-6 Luna.
    • Ask for more sources and Onhand opens real articles from its search, two or three at a time, each with its own highlights.
    • Onhand Free now works in Hong Kong and Macau, where OpenAI doesn't offer its service.

    Source code released under Apache License 2.0

    Download file

  • Version 0.4.12

    Released Oct 21, 2026 - 6 MB
    Works with firefox 140.0 and later
    Updates since 0.4.9:
    - PDF notes stay beside the page in narrow windows. When there's no room, they fold into tabs you can click open.
    - Ask Learning mode to "quiz me as we go" and it keeps teaching and asking until you say stop.
    - Onhand Free now runs on api.useonhand.com, which school and work networks are less likely to block.
    - Error reports no longer include quoted text from your page or question, and Firefox builds now identify themselves as Firefox. Reports are sent only when you allow technical data in Firefox, or when you click "Send anonymized error report".

    Source code released under Apache License 2.0

    Download file

  • Version 0.4.9

    Released Oct 18, 2026 - 5.99 MB
    Works with firefox 140.0 and later

    Source code released under Apache License 2.0

    Download file