Free tools for your videos.
They run in your browser, with no sign-up and nothing sent anywhere.
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YouTube chapters checker
Paste your video's description and check its timestamps against YouTube's chapter rules.
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Speech time calculator (words to minutes)
Paste a script or type its word count and see how long it takes to say out loud.
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Video file size calculator
Pick a length, a resolution and a frame rate and see how big the MP4 will be.
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