TwoThink Video
A video toolbox that lives in your browser
Compress, trim, convert to GIF, adapt to vertical formats… all done locally. Files are never uploaded, no sign-up, free forever. The first run downloads a ~30MB FFmpeg core, so please be patient.
100% browser-based
Your videos never reach a server, so private footage stays private.
No sign-up · free forever
Open and use it straight away — no account wall and no pop-up ads.
Open WeChat links externally
The in-app browser cannot process video fully — copy the link into Safari / Chrome instead.
~30MB core on first run
The FFmpeg core is downloaded and cached the first time you use it — please be patient.
All tools
12 tools in total — every one of them runs locally in your browser
Compress Video
Shrink the file size so it fits in a chat message
Trim Video
Cut out a clip, in fast or precise mode
Video Screenshot
Capture frames manually or in batches, exported locally
Video to GIF
Turn a clip into an animation for stickers and chats
Extract Audio
Export MP3 / WAV / AAC straight from a video
Convert Audio Format
Convert between WAV / MP3 / FLAC and more, in batches
Merge Videos
Join several clips into one file, in order
Convert Video Format
Convert between MP4 and WebM, right in the browser
Change Video Speed
0.5x–4x speed, with optional pitch correction
Watermark Video
Overlay a PNG logo, with five positions to choose from
Video to Long Image
Sample frames and stitch them into one tall image
Landscape to Vertical Video
Fit a 9:16 vertical video for TikTok / Xiaohongshu in one click