FunGen Online Studio
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Drop a script here. Add a video to play along.

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L0 · StrokeNo scriptNo selectionSpeed · 0–400+ pos/sView 10.0 s
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Studio
Edit funscript online: editor, halver, visualizer and Script Doctor

A free online funscript editor

Open .funscript or CSV files without uploading them. Edit points on the timeline, select a passage, halve or double strokes, remap amplitude, limit speed, smooth motion, change timing, or build a reusable modifier chain. Compare the preview before applying it. Undo and Redo keep edits reversible. Start with the online editing walkthrough.

Funscript halver and speed adjustment

Use Halve to reduce the number of strokes while keeping the passage duration. This differs from slowing video playback or reducing stroke depth. Preview the original and edited curves, then save a new copy. See how to halve a funscript.

Funscript visualizer with synchronized video

The timeline shows position over time and colors motion by speed. The whole-script heatmap helps locate intense passages. Open an optional local video or audio file to check synchronization, loop a selection and adjust timing.

Repair a funscript with basic Script Doctor checks

Find invalid values, duplicate timestamps, crowded points, fast motion and long gaps. Jump to a finding, preview the repair and replay that passage. A gap or short movement can be intentional, so review changes before applying them.

Keep a workspace and make new patterns

Open several scripts, compare their heatmaps, edit metadata and chapters, or generate triangle, sine, pulse, random and speed-ramp patterns. Save a workspace file to continue later. Export a funscript, CSV, selected passage or heatmap image.

Files stay on your computer

Scripts and optional media are processed in this browser. Each script supports up to 8 MB and 100,000 points, with up to 20 scripts open. Presets contain editing settings and can be saved in your browser. Workspace files are saved only when you choose to download them. See Privacy.

When to use desktop FunGen

The browser Doctor includes motion and file checks; contextual video analysis, the complete Doctor repair planner, AI video generation and the complete device integrations remain in FunGen desktop. Open separate axis files in Studio; combined-axis payloads require the desktop app. Device connections are experimental and browser support varies. Media codecs depend on your browser. Review chapter timing after retiming a script.

FunGen homepage · Editing guide · Funscript format · All guides