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DemoLens

demolens.org

Free plan WebBrowser extension
Visit demolens.org
Spec score 7.8 #11 of 22 in Game Replay Analyzers

What it is

DemoLens is a free browser viewer for Counter-Strike 2 match demos, presenting a 2D tactical replay rather than a 3D first-person view. It accepts .dem, .dem.gz, and .dem.zst files and parses them in the browser with WebAssembly, so demo files are not uploaded to DemoLens. Replay controls include a multi-level radar, grenade trajectories, player status, key presses, playback speed, and kill markers. Analysis tools provide grenade lineup pins, movement trails, heatmap-style pins, FOV cones, drawing mode, and kill-feed badges. Scoreboard and economy data, player metrics, percentile comparisons, and an integrity check against professional baselines are included. FACEIT demos add synchronised voice playback, per-player voice timelines with WAV export, and chat translation. The browser extension adds one-click demo opening and player scouting statistics in FACEIT rooms. Desktop Chrome, Edge, or Firefox is required; phones are unsupported. The project says it has no accounts, tracking, analytics cookies, ads, or personal-data collection.

Spec sheet

Purpose
DemoLens is a browser based 2D viewer for Counter-Strike 2 match demos.Read 8 Oct 2026 · demolens.org
Privacy
The privacy policy says DemoLens has no accounts, tracking, analytics cookies, or ads, and does not collect personal data.Read 8 Oct 2026 · demolens.org
Support
The site lists [email protected] as its contact address.Read 8 Oct 2026 · demolens.org
Analysis features
Analysis tools include grenade lineup pins, movement trails, heatmap-style pins, FOV cones, drawing mode, and kill-feed badges.Read 8 Oct 2026 · demolens.org
Browser requirements
The viewer requires a desktop browser; the site names Chrome, Edge, and Firefox, and says phones are not supported.Read 8 Oct 2026 · demolens.org
Demo limitation
DemoLens provides a 2D tactical replay rather than a 3D first-person replay.Read 8 Oct 2026 · demolens.org
FACEIT extension
The browser extension adds a one-click demo button and player scouting statistics to FACEIT match rooms.Read 8 Oct 2026 · demolens.org
Local processing
Demo files are parsed in the browser using WebAssembly and are not uploaded to DemoLens.Read 8 Oct 2026 · demolens.org
Project status
DemoLens describes itself as an independently run, non-commercial community project and says it is not affiliated with FACEIT or Valve.Read 8 Oct 2026 · demolens.org
Replay features
The replay includes a multi-level radar, grenade trajectories, player status, key presses, playback speed controls, and kill markers.Read 8 Oct 2026 · demolens.org
Stats
The viewer provides scoreboard and economy data, player performance metrics, percentile comparisons, and an integrity check against professional baselines.Read 8 Oct 2026 · demolens.org
Supported files
The viewer accepts .dem, .dem.gz, and .dem.zst files.Read 8 Oct 2026 · demolens.org
Translation privacy
If built-in on-device translation is unavailable, using the translate button opens Google Translate and sends it the in-game chat text and player names.Read 8 Oct 2026 · demolens.org
Voice and chat
For FACEIT demos, DemoLens supports synchronized voice playback, per-player voice timelines with WAV export, and in-game chat translation.Read 8 Oct 2026 · demolens.org

Plans and prices

Free Free CS2 demo viewer · FACEIT browser extension Read 8 Oct 2026 · demolens.org

Every DemoLens plan and price →

Strong points and limits

Strong points

  • Free CS2 demo viewer
  • Local WebAssembly parsing
  • Detailed tactical analysis tools
  • FACEIT voice and chat features
  • No accounts or tracking

Limits

  • Desktop browser required
  • Phones are not supported
  • Replay is 2D, not 3D first-person
  • Google Translate may receive chat text and names

Who it suits

It suits Counter-Strike 2 players and analysts who want local browser replay and tactical statistics, including FACEIT match review.

Verdict

DemoLens offers extensive replay and analysis features without uploading demos or requiring accounts. Its desktop-only, 2D presentation and conditional Google Translate data sharing are the main constraints to check.

Where Specifiction places it

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