NearPDF

2026-08-30

Gradescope takes one PDF per assignment — how to merge, rotate, and reorder your handwritten homework scans in your browser

The fall term just started, and the first problem sets are coming due. For a huge share of math, physics, CS, and engineering courses, "turn it in" no longer means a stapled packet in a box outside an office — it means Gradescope, the grading platform whose own homepage counts 2,600+ universities and 3.2 million+ students. The work itself is still handwritten: derivations, circuit diagrams, epsilon-delta proofs on loose paper or a spiral notebook. And Gradescope's own student guide is blunt about what has to bridge those two worlds: "You can only submit one PDF file per assignment. Ensure your handwritten work has already been scanned and saved as a single PDF before you begin." Between five pages of handwriting and that single, ordered, right-side-up PDF sits a small mechanical gap that the official guides mostly wave past — and it's precisely the gap that eats twenty minutes at 11:40 p.m. on the night an assignment is due.

What Gradescope actually asks for

The requirements are scattered across a few help articles, so here they are in one place. The scan itself comes first, from a scanning app — Gradescope's guide recommends Scannable on iOS or Genius Scan on iOS or Android, and university help desks like Vanderbilt's repeat the same two names and add the operative sentence: "The pages should all be in one PDF." The file should stay reasonable — Gradescope's best-practices page asks for PDFs that are small in size, no more than 100 MB, and still high-resolution. And after the upload comes the step people forget exists until the timer is running: Gradescope shows your questions on one side and your uploaded pages on the other, and you assign pages to questions so the grader can find each answer. There's a shortcut button — Assign Pages Sequentially — but its own description carries the catch: it helps "if each question is on its own page in your PDF." In other words, the shortcut only works if your PDF's page order already matches the question order. That's not a Gradescope quirk; it's the whole game.

Where the mess actually comes from

Nobody solves a problem set in one sitting, so nobody scans it in one sitting either. Problems 1 and 2 get done Tuesday and scanned Tuesday; 3 through 5 get done Thursday after office hours; problem 4 gets redone entirely on a fresh sheet once you spot the sign error. Each scanning session produces its own PDF, which means the night the assignment is due you're holding three files whose combined page order is nothing like the question order. Add the classic capture accidents: a page scanned sideways because the notebook was turned, the scratch-work sheet that got captured along with the real pages, and the duplicate that exists because you weren't sure the first take was sharp. None of that is fixable inside Gradescope's upload box — it takes exactly the PDF you hand it, one per assignment, as its own guide says.

The five-minute cleanup, entirely in your browser

This is squarely NearPDF's kind of job. Drop all three session PDFs into the merge workspace and every page appears as a thumbnail in one grid, still grouped by file: drag the files (or individual pages) until the pages run problem 1 through problem 5 in order, rotate the sideways capture with the per-page rotate control (the rotation post explains why doing this before submitting beats hoping a viewer fixes it), click into any thumbnail's full-size preview to confirm which take is the sharp one, and delete the scratch sheet and the duplicate. Merge, and you have the thing the guide asked for: one PDF, pages in question order. If you already combined everything earlier and only the order is wrong, the organize tool does the same drag-to-reorder on a single file — the out-of-order-scans post covers that pattern in depth. All of it runs in your browser with no account and no upload: your unsubmitted answers never sit on a converter site's server, and the workflow behaves the same on dorm wifi at 11:58 p.m. as it does anywhere else, because the processing isn't on the other end of a connection.

Handwritten problem set → one PDF Gradescope can grade 1. Scan the pages with a scanning app Gradescope suggests Scannable or Genius Scan — NearPDF has no photo-to-PDF step 2. Tidy in NearPDF, on your device Merge the session PDFs · rotate the sideways page · delete scratch sheets · question order 3. Submit the one PDF — resubmit freely before the deadline "You can only submit one PDF file per assignment" — the grader sees the most recent upload 4. Assign pages to questions — the step people skip → "Assign Pages Sequentially" only helps when each question sits on its own page — which is exactly what the reordering in step 2 bought you
Gradescope's own requirements — scan-first, one PDF, pages assigned to questions — and the cleanup step between them that no official guide walks through.

Why page order is worth two extra minutes

The page-assignment step is the honest reason to care about order at all. Gradescope graders work question by question, and the assignment map you build at submission time is how they find your answer to each one — a page you never assign to any question is a page the workflow gives a grader no reason to open. With pages already in question order, the Assign Pages Sequentially button does the whole map in one click; with pages jumbled, you're hand-matching thumbnails to question numbers against a deadline, which is exactly when mismatches happen. And if you do discover a botched upload after the fact, Gradescope's submission guide has the safety valve: resubmit as many times as needed before the due date, and "your instructor or TA will only see your most recent submission when they grade the assignment." A clean resubmission two minutes later costs nothing; the version history quietly absorbs the messy first try.

The honest limits

NearPDF won't turn the photos into a PDF in the first place — that's the scanning app's job, per Gradescope's own recommendations, and NearPDF's file intake accepts only PDFs. It has no compression: if your scanning app produced a file bumping against the 100 MB best-practices guidance, the fix is at capture time — rescan at a lower resolution or in black-and-white — because deleting extra pages in NearPDF shrinks a file only by the pages removed. It has no OCR and can't sharpen a blurry or too-dark page; retake the photo instead, since an illegible page is illegible to your grader too. A PDF your scanning app password-protected is skipped from the merge automatically with a per-file notice, so remove the password first. And it knows nothing about your course's actual rules — whether your instructor set up a templated assignment, accepts image uploads instead, or allows late resubmission is between the assignment page and your syllabus. What NearPDF does is the mechanical middle nobody's help article walks through: three scan sessions, one sideways page, and a scratch sheet in, one clean, question-ordered, right-side-up PDF out — built on your device, uploaded to nothing but Gradescope itself.