Gloss is where you close-read an assigned article or PDF: highlight passages, write notes on them, and turn the whole reading in as one file. It runs entirely in your browser — nothing you read or write is uploaded anywhere until you click Export.
The whole workflow in four sentences:
.gloss file and submit it — to D2L or Google Classroom, whichever your class uses.The .gloss file is your assignment. It's the only copy of every highlight and note you make — Gloss does not save your work anywhere else. See Exporting and submitting for how to protect it if you're working across more than one sitting.
Gloss is one page, and it works in any modern browser with nothing to install and no account to create.
Open it, add your reading, and start annotating. It keeps working after it loads, so a brief drop in your internet connection mid-session won't lose your notes.
Gloss saves your session on the computer you are working on, so reopening the page brings your sources, highlights and notes back on their own. It cannot save the PDF itself — you will be asked to open that file again, and Gloss checks it is the same one. That saved copy lives in one browser on one computer and disappears if the browsing data is cleared, so still export a .gloss file as you go: it is what you turn in, and the only copy you can carry to another computer with Import .gloss.
Almost every assignment is a PDF, so that's the path below. You can add more than one source to a single session if the assignment calls for it.
Large PDFs load a page at a time. Only the pages near what you're currently viewing are fully rendered, so scrolling through a long reading may take a moment to catch up — that's normal, not a stall.
"No text layer" error? That means the PDF is a scanned image with no selectable text underneath, so there's nothing for Gloss to highlight. Ask your instructor for a text-searchable copy.
If your instructor points you to a plain article or transcript instead of a PDF, use Add text:
There's no separate "highlight" button. Just select a passage of text with your mouse or trackpad, directly in the reading pane, the same way you'd select text to copy it. Releasing the selection opens the note box automatically, anchored to exactly what you selected.
Double-click a highlighted passage in the reader, or click the note in the right-hand list, to reopen it. From there you can change the color or tags, edit the text, or click Delete to remove the note and its highlight entirely.
Highlights can't overlap. If you select a passage that overlaps a highlight you already made, Gloss will tell you and won't create a second one. Select a different, non-overlapping passage instead.
Everything you've written lives in the Notes panel on the right, and a long reading can produce a lot of notes fast. A few tools keep them manageable:
The .gloss file is the copy you can rely on. Gloss does keep your session on the computer you are using, so a closed tab or a dead battery is usually survivable — reopen the page and your work is there. But that copy is tied to one browser on one computer: it does not travel, it is not what you submit, and clearing your browsing data removes it. The .gloss file is the one you hand in, the one you can move between computers, and the only one you should count on.
Most assignments take more than one sitting to annotate fully. Treat exporting like saving a document you care about:
.gloss file to your Downloads folder — it holds every source, every highlight, and every note you wrote.The file is signed at export, which is how your instructor's review tool confirms it wasn't edited after you turned it in — it's a check for accidental changes, not a claim about who wrote it.
Gloss keeps a running count of your activity — visible in the footer at the bottom of the page as you work, so nothing it tracks is hidden from you.
| What's recorded | What it isn't |
|---|---|
| Keystroke and paste counts per note, plus rough timing | Not the text itself — Gloss counts pastes and their length, never what was pasted. |
| Active time spent on a note | The clock pauses the moment you switch tabs or windows, and stops crediting time after about a minute of no activity — so stepping away doesn't inflate your time. |
| A tamper signature, added when you export | Not a record of anything you did — just a check that the file wasn't hand-edited after you saved it. |
Nothing is uploaded until you click Export — everything before that lives only in your browser tab. The privacy statement covers this in full, including the small amount of ordinary web traffic (fonts, page-visit counting) that isn't your reading or notes.
No. Gloss has no login and never asks for an email or password. The only identifying text is the name you type into the Export dialog.
Usually not. Open Gloss again on the same computer, in the same browser, and your sources, highlights and notes come back — Gloss saves the session as you work. You will be asked to re-open the PDF, since that part is never kept. What that copy will not survive is a different computer, a different browser, or clearing your browsing data — so export a .gloss file before you stop, and especially before shutting down for the day.
Yes. Add as many as the assignment calls for — they all export together in one .gloss file.
Your reading and notes are not. The page does load fonts from the internet and counts page visits for ordinary site measurement — no reading or note content involved. See the privacy statement for details.