DemoLens vs valab

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.

valab is a web service for analyzing VALORANT .vrf replay files. Uploads become browser playback, scouting reports, heatmaps, and statistics based on game data recorded in the replay rather than video estimates or a stats API. The viewer places all ten players on a map and shows their view angles, health, weapons, credits, abilities, and round events. Reports can cover you, teammates, or opponents, using every uploaded match in which a player appears. Regularly queued teammates are grouped automatically, while named stacks can be reviewed as one record. Metrics include opening duels, trades, clutches, headshot rates by gun and range, and round impact. The site checks replay builds against verified versions and flags unrecognized builds. Uploaded match data and reports stay private to the uploading account, with real identities removed before browser delivery. Original replay files are deleted after processing, while processed data remains until removed. A local inspector can read a .vrf entirely in the browser without uploading it.