Every creator hits the same wall: you finished the video, exported the MP4, uploaded to YouTube — and forgot the custom thumbnail.
Your best frame is already inside that file. You just need to grab it.
Most online tools make you upload the entire video to their server. That is slow for large files, risky for unreleased content, and often ends with a watermark unless you pay.
So I built FrameSnap — a free browser tool that extracts thumbnails locally. No account. No watermark. Your video never leaves your device.
The problem with "free" thumbnail tools
