Upload your WebM video. PDF.to pulls frames out at the rate you pick and gives you a ZIP of PNG stills.
How many frames will I get from the WebM?
+
By default, one frame per second of WebM runtime. The options panel lets you pick every frame, one per 5 seconds, only key-frames, or a custom interval.
What resolution will the extracted PNG images have?
+
Source resolution. A 1080p WebM produces 1920×1080 PNG stills; a 4K source produces 3840×2160 stills. Downscale in the options panel if needed.
我可以在特定的时间戳上提取一个框架吗?
+
Yes. Use the timestamp picker on the upload preview to scrub to the exact moment, then click 'extract this frame as PNG'.
框架抽取丢失了吗?
+
Each frame is decoded from the WebM (lossless) and re-encoded as PNG. If PNG is lossless (PNG), no quality is lost. If PNG is JPG, we use high quality (90) by default.
Will the PNG stills be timestamped or numbered?
+
Yes — file names are zero-padded sequence numbers (PNG_00001.PNG, PNG_00002.PNG, ...) so they sort correctly. The options panel can also embed the source timecode in EXIF.
Can I make a contact-sheet or thumbnail grid from the WebM?
+
Yes — pick the 'contact sheet' option to get a single PNG containing a grid of thumbnails, useful for storyboarding or video previews.
How large can my WebM video be?
+
The free plan has a size limit that varies by file type; PRO allows much larger files. Frame extraction is fast even for long videos.
Is the WebM to PNG extraction free?
+
Yes, within the free size limit. PRO unlocks larger files, higher extraction rates, and parallel processing.
Does PDF.to keep my WebM or extracted PNG files?
+
No. Both the source WebM and the PNG output ZIP are deleted within an hour. Conversion runs in an isolated worker.
Can I extract images only from a section of the WebM?
+
Yes. Use the trim controls to set start and end times, and only the selected range produces PNG frames.
What if my WebM has variable frame rate?
+
We normalize to a constant frame rate internally before extraction, so the PNG stills are spaced evenly in time regardless of how the source was encoded.
