Step 1: Attach your WebP files using the button above or by bring and position.
Step 2: Click the 'Optimize' button to start the optimization.
Step 3: Collect your converted WebM files.
WebP to WebM Optimization FAQ
How do I convert a WebP image into a WebM video?
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Upload the WebP file and the converter encodes it into a WebM video clip. An animated WebP (animated GIF / WebP) maps each frame to a video frame; a still WebP becomes a short clip holding the image for a duration you set.
Why convert an animated WebP to a WebM video instead of leaving it as is?
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Video formats like WebM compress motion far better than animated image formats. A chunky animated WebP often shrinks dramatically as a WebM, plays more smoothly, and is accepted by platforms (timelines, ad systems, messaging) that reject animated images.
Will my animated WebP keep its frame timing in the WebM?
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Yes — per-frame delays in the animated WebP are read and reproduced as the WebM frame rate, so the motion plays at the original speed. Variable frame delays are normalized to a constant rate that preserves overall timing.
How small will the WebM be compared to the WebP?
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Animated GIF and animated WebP are inefficient compared with a real video codec, so the WebM is frequently several times smaller for the same visible motion — one of the main reasons to make this conversion for web delivery.
Does the WebM video have sound?
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No — image formats carry no audio, so the WebM starts silent. If you need a soundtrack, convert to WebM first, then add audio with a video editor; the conversion itself only handles the visual track.
What frame rate will the WebM use?
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For an animated WebP, the source timing drives the rate. For a still WebP, you pick a duration and the converter holds the frame for that length at a low, efficient frame rate. Both are adjustable in advanced options.
Will transparency in my WebP survive in the WebM?
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Most video formats do not store an alpha channel, so a transparent WebP is composited onto a solid background (white by default, configurable) in the WebM. If you must keep transparency, a video target is the wrong format — keep it as an image.
Can I make a slideshow WebM from several WebP images?
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Drop multiple WebP files and choose the slideshow option: each image holds for a set number of seconds, producing a single WebM clip. Per-image duration and order are set in the picker before conversion.
Is the WebM good for uploading to social platforms?
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Yes — an MP4 / WebM WebM is exactly what timelines, stories, and ad systems expect, unlike an animated WebP that many of them downrank or reject. Pick the WebM container your target platform lists as supported.
How long does WebP to WebM take?
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Short — a brief animation or a single still encodes in seconds. Longer animated sources scale with their frame count, but the encoder is the only real cost and the pipeline runs server-side.
Is my WebP file private during conversion?
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Yes — the WebP image and the resulting WebM are processed in isolated workers and deleted within minutes. No human review, nothing retained. See /privacy/.
Can I resize the WebP before making the WebM?
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Yes — the resize option scales the input down before encoding, which shrinks the WebM substantially. A smaller frame is the single biggest lever on final video size when going from WebP to WebM.