PNG, JPG, or WebP for YouTube thumbnails?
The best working format and the best delivery format can differ. Choose the export based on both the picture and the upload destination.
The best working format and the best delivery format can differ. Choose the export based on both the picture and the upload destination.
Use JPG for photographic copies
JPG often keeps a photo file smaller at the same dimensions. Check high-contrast letter edges and fine patterns after compression. JPG has no alpha channel, so flatten transparency onto a deliberate color before sending it.
Keep a PNG for line art or transparency
PNG is useful when you need crisp flat graphics or an intermediate with transparent pixels. It can be larger on a photo. Inspect how the final platform shows any areas that were transparent.
Treat WebP as a working option
WebP is useful for local exchange and supported web destinations. YouTube's current thumbnail help gives JPG and PNG as examples. To avoid a format issue when uploading, keep a separate JPG or PNG copy and validate the exact file.
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Turn SRT or VTT captions into readable notes
An exported caption file contains timing and markup that are useful to a player but get in the way when you read the text. Keep the timed file and make a separate plain-text copy.
Compress a thumbnail without muddying the details
Compress for the upload limit you need. Keep the uncompressed master so future edits do not inherit compression artifacts.
Build YouTube chapters from your final cut
Add chapters after locking the edit. Chapters work best as a short map of what the viewer can do or learn.