# Add a version

> Upload a PDF and a LaTeX zip as a new immutable version of a work; type and label are inferred from the submission; checks run once the required files are there.

Every upload is **a new, immutable version**: nothing is edited and no earlier version is overwritten. You can add versions on the web, with the [`papers` CLI](/en/tich-hop/cli/) or through [MCP](/en/tich-hop/mcp/).

## On the web

1. Open the [work page](/en/huong-dan/trang-cong-trinh/) and click **Thêm phiên bản** (Add version; only shown when you may upload versions).
2. Drop the **PDF** and/or the **LaTeX zip** (zip up to 100 MB, each file up to 200 MB).
3. Check the **type**, **Nhãn** (Label) and **Tiêu đề phiên bản** (Version title); turn on **Bản ẩn danh (venue chấm mù)** (Anonymous version, double-blind venue) if needed.
4. Click **Tạo phiên bản** (Create version).

![Add version dialog with a PDF and a zip dropped](../../../../assets/shots/them-phien-ban.webp)

The version type is inferred from the submission status; you can still change it:

| Submission is at | Suggested type |
| --- | --- |
| `accepted`, `camera_ready` | Camera-ready |
| `published` | Đã xuất bản (Published) |
| `major_revision`, `minor_revision`, `rebuttal_open` | Bản sửa (Revision) |
| No version yet | Bản nộp (Submission) |
| Anything else | Journal: Revision; conference: Camera-ready |

Labels are generated (`v1`, `R1`, `Camera-ready`…). For a double-blind venue the version is marked anonymous automatically. The title is taken from the previous version; edit it if the paper was renamed.

You can also create a version from files you already have: in [My files](/en/huong-dan/tep-cua-toi/), select a zip and a PDF, then **Tạo phiên bản từ file** (Create version from files).

## After upload: checks and indexing run automatically

When the version has **all files required for its type**, the system runs the 7 deterministic checks (zip integrity, compile, source–PDF match, latexdiff, source cleanup, anonymity, template and page count) and indexes it for Ask AI. The reference check, similarity and reviewer cross-check run from their own panels.

| Type | Required files |
| --- | --- |
| Submission | PDF + zip |
| Revision | PDF + zip + reviews + decision letter + response letter |
| Camera-ready, Published, Preprint | PDF |

The web dialog only accepts a PDF and a zip, so for a **Revision** click **Chạy lại tất cả** (Rerun all) in the **Vấn đề** (Issues) panel to check right away, or upload the other three documents with the CLI (`--review`, `--decision`, `--response`). Results are covered in [Reading check results](/en/huong-dan/ket-qua-kiem/).