# CSES Forge

> An in-page IDE for CSES: problem statement, Monaco editor, test runner, and one-click submit.

Canonical page: [https://chrome-stats.com/d/cses-forge](https://chrome-stats.com/d/cses-forge)

## Overview

- **ID:** `cses-forge`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Karan Yadav
- **Category:** web-development
- **Daily users:** 1
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 0.1.0
- **Last updated:** 2026-08-20
- **First published:** 2026-08-17
- **Size:** 1.20 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/cses-forge/)
- **Website:** [https://github.com/karanBRAVO/cses-firefox-extension/issues](https://github.com/karanBRAVO/cses-firefox-extension/issues)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/cses-forge/privacy/](https://addons.mozilla.org/firefox/addon/cses-forge/privacy/)

## Description

CSES Forge turns any CSES (<a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/16e1cacb1a6913f97f5ca70f3adc41dd30d0e2b5aead0cf74dd54ce926b8ddb7/http%3A//cses.fi" rel="nofollow">cses.fi</a>) problem page into a full in-page IDE, so you can read the problem, write code, test it, and submit — all without ever leaving the tab.

Key features:
• Problem statement, constraints, and examples shown right next to your code, scraped straight from the page (with math rendered).
• A real Monaco code editor (the same engine behind VS Code) for C++, Python, and Java, with adjustable font size and word wrap.
• Code is saved automatically per problem and per CSES account, so nothing gets lost or mixed up if you switch accounts.
• A Test Cases panel pre-filled from the problem's own examples — add your own inputs, hit Run, and see output for every case instantly.
• One-click Submit that fills in and submits CSES's own official submission form, so your real verdict always comes from CSES's judge, not a third party.
• Light/dark theme that automatically follows CSES's own theme toggle.
• Resizable panels so you can arrange the workspace however you like.

No account, sign-up, or backend server required. CSES Forge runs entirely client-side in your browser, and only talks to <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/16e1cacb1a6913f97f5ca70f3adc41dd30d0e2b5aead0cf74dd54ce926b8ddb7/http%3A//cses.fi" rel="nofollow">cses.fi</a> (to read problems and submit) and a public code-execution API (to run your test cases).

Open source: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/1359ca60e96eebf69d3f13ef0e96c70e270b7e7c2e6cad021e8ae21be85f7de5/https%3A//github.com/karanBRAVO" rel="nofollow">https://github.com/karanBRAVO</a>

## Rankings

- #81,506 — Overall
- #182 — forget

## Permissions and access

### Permissions

- `storage`

### Host permissions

- `https://cses.fi/*`
- `https://wandbox.org/*`

### Content script matches

- `cses.fi`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/cses-forge)