WebM to WebP Converter

Convert WebM to WebP Online

Pull a sharp still image out of a WebM video and save it as WebP — one frame at a timestamp you choose, or a sequence of evenly spaced frames as separate WebP files. WebP stills are smaller than JPEG or PNG at the same visual quality, with optional lossless mode and transparency. This converter outputs still images, not a moving loop; if you need an animated, looping result, use WebM to GIF instead.

How to Convert WebM to WebP

1. Upload Your WebM File: Drag and drop or click "+ Add Files" to load a WebM video. Browser screen recordings, OBS captures, and Twitter/Reddit/Discord WebM downloads all work. Batch conversion is supported.
2. Pick a Quality Preset and Lossless Mode: The default is Very High quality, lossy. Switch "Lossless?" to Yes for pixel-perfect output (larger files), or drop the Quality Preset for smaller web thumbnails. You can also set a Specific file size in KB/MB if you have a budget to hit.
3. Choose Frame Selection — Specific Frame or Multiple Screenshots: Specific Frame extracts one still at a timestamp you enter (e.g. 2.5 seconds). Multiple Screenshots pulls several evenly spaced stills across the clip, each saved as its own WebP file.
4. Set Resolution and Convert: Use a preset (144P–2160P), enter a Resolution Percentage, or set custom Width × Height with aspect-ratio lock. Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared.

Why Convert a WebM Frame to WebP?

WebM and WebP are both Google-developed and share the same baseline still coder (VP8 powers lossy WebP, and the same intra-frame techniques appear inside WebM video). That kinship makes a clean still extraction natural: decode the WebM, grab the frame(s) you want, and re-encode each as a WebP image. Per Google's published measurements, the result is 25–34% smaller than JPEG for lossy stills and 26% smaller than PNG in lossless mode.

• Pull thumbnails from screen recordings — OBS, Chrome's tab capture, and macOS QuickTime can export WebM. Extract a still frame at 0.5–2 seconds in for a blog cover, a video thumbnail, or a social card.
• Build photo-grade preview images — Lossy WebP carries 24-bit color and 8-bit alpha. A frame from a VP9+alpha WebM keeps its transparency, unlike JPG (no alpha) or GIF (1-bit alpha only).
• Make a poster image for a <video> tag — Grab a representative frame and serve it as the poster attribute so the player shows a crisp still before playback starts.
• Shrink hero stills for Core Web Vitals — LCP (Largest Contentful Paint) penalizes oversized hero media. A WebP still at 480–720 px loads well inside the LCP budget while staying sharp.
• Extract a frame sequence for image-editing workflows — Multiple Screenshots outputs N evenly spaced stills as separate files, useful for picking the best frame in Photoshop or assembling a contact sheet.

WebM vs WebP — What You're Actually Converting

Audio is dropped during conversion — WebP is a still-image format with no audio track. If you need to keep audio, convert to a video format like WebM to MP4 instead. For a moving, looping image, WebM to GIF produces a real animation.

Quality, Mode, and Use-Case Cheat Sheet

Frequently Asked Questions

Can this make an animated, looping WebP from my WebM?

No. This converter outputs still images only — one frame (Specific Frame) or several separate still frames (Multiple Screenshots). It does not produce an animated, looping WebP. If you want a moving image that loops, convert to GIF with WebM to GIF, which is built for animated output, or keep the clip as video via WebM to MP4.

How do I extract one specific frame instead of several?

Use Specific Frame mode and enter a timestamp in seconds (e.g. 2.5 for the frame at 2.5 seconds in). The output is a single still WebP. For a set of evenly spaced stills across the clip, switch to Multiple Screenshots — each frame is saved as its own WebP file. If you'd rather have JPG or PNG, see WebM to JPG.

Why does my WebP look worse than the original WebM frame?

WebM compresses video temporally — each frame references its neighbors — so an individual frame already carries some compression noise. Re-encoding it as lossy WebP adds a second pass. Two fixes: raise the Quality Preset toward Highest, or switch "Lossless?" to Yes. Lossless WebP is larger but preserves every pixel of the decoded WebM frame. In our testing, a 1080p frame from a screen-recording WebM re-encoded at Very High quality landed around 60–120 KB, versus roughly 300–500 KB for the same frame as lossless WebP.

Will VP9 alpha (transparent WebM) carry over to the WebP still?

Yes. WebP supports an 8-bit alpha channel, which covers what VP9+alpha encodes. A frame from a transparent screen recording or rendered animation keeps its alpha through the conversion. This is one of WebP's biggest advantages over JPG (no alpha) and GIF (1-bit alpha only, so soft edges look jagged). For best fidelity on transparent stills, set "Lossless?" to Yes.

Does every browser display WebP stills?

Modern ones do: Chrome 32+, Firefox 65+, Edge 18+, and Safari 16+ render WebP images natively (Safari added full WebP support on macOS Big Sur 11 and iOS 14, September 2020, with broad parity by Safari 16). For very old clients you may still want a JPG or PNG fallback — convert the same frame with WebM to JPG.

How do I target a specific output file size?

Choose "Specific file size" and enter a target in KB or MB. The encoder iterates quality until the result lands near your target, which is handy for CMS upload caps or LCP budgets (for example, keeping a hero still under 200 KB). For an existing WebP you want to shrink further, see compress WebP.

Can I batch convert many WebM files at once?

Yes. Drop in multiple WebM files; settings apply to all by default, or override per file. Each file is processed on our servers in parallel, then you download the stills individually or as a single ZIP. There's no per-file cap beyond upload size and time.