{"id":1443,"date":"2026-08-22T09:13:00","date_gmt":"2026-08-22T13:13:00","guid":{"rendered":"https:\/\/www.xconvert.com\/blog\/?p=1443"},"modified":"2026-07-16T23:43:00","modified_gmt":"2026-07-17T03:43:00","slug":"webm-vs-webp-difference","status":"publish","type":"post","link":"https:\/\/www.xconvert.com\/blog\/webm-vs-webp-difference","title":{"rendered":"WebM vs WebP Difference: One Is a Video, One Is an Image"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Someone sends you a clip ending in <code>.webm<\/code>, your website wants images ending in <code>.webp<\/code>, and half the tutorials out there swap the two names mid-sentence as if a typo didn\u2019t matter. It does: <strong>WebM is a video format and WebP is an image format<\/strong> \u2014 different jobs, different capabilities, one letter apart. This guide untangles the two and walks through the conversions people actually run between them. Every claim here is verified against the format owners \u2014 <a href=\"http:\/\/webmproject.org\">webmproject.org<\/a>, Google\u2019s WebP documentation, caniuse \u2014 and against the live xconvert tool pages.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quick answer:<\/strong> <strong>WebM is video.<\/strong> It\u2019s an open, royalty-free media container (based on Matroska) holding VP8 or VP9 video plus Vorbis or Opus audio \u2014 the <code>.webm<\/code> file plays, and it can have sound. <strong>WebP is an image.<\/strong> It\u2019s a compressed picture format \u2014 smaller than JPEG and PNG at similar quality, optionally animated, never with audio. The names are one letter apart because both came out of Google\u2019s 2010 open-media push and share the same VP8 compression DNA. Converting <strong>WebM \u2192 WebP<\/strong> means extracting still frames from a video; converting <strong>WebM \u2192 MP4<\/strong> is the fix when the video won\u2019t play; <strong>GIF \u2192 WebP<\/strong> is how you get an <em>animated<\/em> WebP.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jump to a section<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#webm\">WebM is a video format<\/a><\/li><li><a href=\"#webp\">WebP is an image format<\/a><\/li><li><a href=\"#names\">Why the names are one letter apart<\/a><\/li><li><a href=\"#comparison\">Side-by-side comparison<\/a><\/li><li><a href=\"#conversions\">The conversions people actually want<\/a><\/li><li><a href=\"#tool\">Convert WebM to WebP on xconvert<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"webm\">WebM is a video format<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The WebM Project defines WebM as \u201can open, royalty-free, media file format designed for the web.\u201d It is a <strong>container<\/strong>, not a codec: the file structure is based on Matroska (the same family as <code>.mkv<\/code>), and inside it carries <strong>video compressed with VP8 or VP9<\/strong>, <strong>audio compressed with Vorbis or Opus<\/strong>, and optional WebVTT subtitle tracks. Mozilla\u2019s container-format guide adds that modern WebM files can also carry <strong>AV1<\/strong> video. The stack is open-sourced under a BSD-style license \u2014 no patent royalties.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In practice, a <code>.webm<\/code> lands on your disk from a screen recorder, a browser-based recording tool, or a video saved off the open web. It behaves like any other video file: duration, frame rate, an audio track if one was recorded.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Browser support is broad but was famously late on Apple platforms. Per caniuse, WebM plays in <strong>Chrome 25+, Firefox 28+, Edge 79+, and Opera 16+<\/strong>, but Apple\u2019s support only became full in <strong>Safari 16<\/strong> (macOS) and <strong>iOS Safari 17.4<\/strong> \u2014 about <strong>96% of browsers<\/strong> overall. That long Safari gap is the root of most \u201cWebM won\u2019t play\u201d complaints \u2014 and of the steady demand for converting WebM to MP4. For the deeper \u201cwhich video format should my site serve\u201d question, see <a href=\"https:\/\/www.xconvert.com\/blog\/mp4-vs-webm-web-video\/\">MP4 vs WebM for web video<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"webp\">WebP is an image format<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Google\u2019s documentation defines WebP as \u201ca modern image format that provides superior lossless and lossy compression for images on the web.\u201d Google\u2019s own measurements put <strong>lossless WebP about 26% smaller than PNG<\/strong> and <strong>lossy WebP 25\u201334% smaller than a comparable JPEG<\/strong> at equivalent SSIM quality. Both modes support transparency: lossless alpha costs around 22% extra bytes, and a lossy transparent WebP is typically about <strong>3\u00d7 smaller than the equivalent PNG<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">WebP can also be <strong>animated<\/strong> \u2014 frames, per-frame timing, and looping, like a GIF but far more efficient. Google\u2019s WebP FAQ reports animated GIFs converted to lossy WebP come out about <strong>64% smaller<\/strong> (about 19% smaller for lossless). That\u2019s what made animated WebP the standard GIF replacement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What WebP is <em>not<\/em> is a video format. It has <strong>no audio track<\/strong> \u2014 the format simply has nowhere to put sound. And it\u2019s bounded like an image: maximum dimensions are <strong>16,383 \u00d7 16,383 pixels<\/strong>. Per caniuse, WebP displays in <strong>Chrome 32+, Firefox 65+, Edge 18+, Safari 16+ (iOS 14+)<\/strong> \u2014 about 96% of browsers, essentially the same reach as WebM. For how it stacks up against the older image formats, see <a href=\"https:\/\/www.xconvert.com\/blog\/png-vs-webp-vs-jpg\/\">PNG vs WebP vs JPG<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"names\">Why the names are one letter apart<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Both are Google projects, launched months apart. <strong>WebM came first<\/strong>, announced in May 2010 alongside the open-sourcing of the VP8 codec (it landed in Chromium on May 19, 2010 \u2014 Google I\/O week). <strong>WebP followed on September 30, 2010<\/strong>, announced on the Chromium blog as a new image format for the web.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The kinship is technical, not just branding. Google\u2019s WebP docs state that lossy WebP \u201cuses predictive coding to encode an image, the same method used by the VP8 video codec to compress keyframes in videos\u201d \u2014 and the WebP FAQ notes the format is bitstream-compatible with VP8. In other words, <strong>a lossy WebP is essentially a single video keyframe wearing an image wrapper<\/strong>. Same compression brain, two jobs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The mnemonic that sticks: <strong>M as in Media (or Movie), P as in Picture.<\/strong> WebM is even expanded as \u201cWeb Media\u201d in Mozilla\u2019s documentation. If the file plays, has a timeline, or makes noise \u2014 it\u2019s WebM. If it\u2019s something you\u2019d put in an <code>&lt;img&gt;<\/code> tag \u2014 it\u2019s WebP.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"comparison\">Side-by-side comparison<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><\/th><th>WebM<\/th><th>WebP<\/th><\/tr><\/thead><tbody><tr><td><strong>Media type<\/strong><\/td><td>Video (a container for moving pictures + sound)<\/td><td>Image (still, or short animation)<\/td><\/tr><tr><td><strong>Sound<\/strong><\/td><td>Yes \u2014 Vorbis or Opus audio tracks<\/td><td><strong>Never<\/strong> \u2014 the format carries no audio<\/td><\/tr><tr><td><strong>Animation<\/strong><\/td><td>It\u2019s video; motion is the point<\/td><td>Optional \u2014 animated WebP is a GIF successor<\/td><\/tr><tr><td><strong>What\u2019s inside<\/strong><\/td><td>VP8\/VP9 (also AV1) video, Vorbis\/Opus audio<\/td><td>Lossy (VP8-keyframe method) or lossless image coding<\/td><\/tr><tr><td><strong>Typical home<\/strong><\/td><td>Screen recordings, browser-recorded clips, open-web video<\/td><td>Website images, thumbnails, stickers, short loops<\/td><\/tr><tr><td><strong>Browser support (caniuse)<\/strong><\/td><td>\u224896% \u2014 Chrome 25+, Firefox 28+, Edge 79+, Safari 16+, iOS 17.4+<\/td><td>\u224896% \u2014 Chrome 32+, Firefox 65+, Edge 18+, Safari 16+, iOS 14+<\/td><\/tr><tr><td><strong>First released<\/strong><\/td><td>May 2010<\/td><td>September 2010<\/td><\/tr><tr><td><strong>Extension<\/strong><\/td><td><code>.webm<\/code><\/td><td><code>.webp<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conversions\">The conversions people actually want<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Because the formats sit on opposite sides of the video\/image line, \u201cconverting\u201d between them means different things depending on direction \u2014 and picking the right path saves you a confusing result.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>WebM \u2192 WebP: pull a frame out of the video.<\/strong> You want an image out of a clip \u2014 a thumbnail, a poster frame, a documentation still. The <a href=\"https:\/\/www.xconvert.com\/convert-webm-to-webp\">xconvert WebM to WebP converter<\/a> does exactly this: it extracts <strong>still frames<\/strong> \u2014 one exact frame, or a series of evenly spaced screenshots. Its own FAQ is explicit that it \u201coutputs still images only\u201d and \u201cdoes not produce an animated, looping WebP,\u201d so go in expecting stills, not motion. Full walkthrough below.<\/li><li><strong>WebM \u2192 MP4: make the video play everywhere.<\/strong> If the real problem is \u201cthis .webm won\u2019t open\u201d \u2014 an older iPhone, a TV, an editing app \u2014 you want the same video in a universal container, not an image. The <a href=\"https:\/\/www.xconvert.com\/convert-webm-to-mp4\">WebM to MP4 converter<\/a> re-encodes to H.264 MP4 by default, the codec that plays on effectively everything.<\/li><li><strong>GIF \u2192 WebP: get an <em>animated<\/em> WebP.<\/strong> If your goal is a moving image in <code>.webp<\/code> form \u2014 a sticker, an emote, a lightweight loop \u2014 start from a GIF. The <a href=\"https:\/\/www.xconvert.com\/convert-gif-to-webp\">GIF to WebP converter<\/a> preserves every frame, per-frame timing, and the loop count, with lossy output roughly 64% smaller than the source GIF, matching Google\u2019s published numbers.<\/li><\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool\">Convert WebM to WebP on xconvert<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s the frame-extraction workflow on the <a href=\"https:\/\/www.xconvert.com\/convert-webm-to-webp\">xconvert WebM to WebP converter<\/a>, using the controls as they appear on the page:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Open <a href=\"https:\/\/www.xconvert.com\/convert-webm-to-webp\">xconvert.com\/convert-webm-to-webp<\/a> and click <strong>+ Add Files<\/strong> \u2014 from your computer, Google Drive, or Dropbox. Drag-and-drop works too, and you can queue several WebM files at once.<\/li><li>Pick the frame mode: <strong>Specific Frame<\/strong> to grab one exact moment (enter the timestamp in seconds, e.g. <code>2.5<\/code> for the frame at 2.5 seconds in), or <strong>Multiple Screenshots<\/strong> for several evenly spaced stills from the clip.<\/li><li>Optionally open <strong>Advanced Options<\/strong> to tune the output: the <strong>Quality Preset<\/strong> defaults to <strong>Very High (Recommended)<\/strong>, a <strong>Lossless<\/strong> toggle is there if the still must be pixel-perfect, and <strong>Specific file size<\/strong> lets you target an exact KB\/MB budget.<\/li><li>Optionally set the resolution: keep the original, choose a preset (144P up to 2160P), or enter a custom <strong>Width<\/strong>\/<strong>Height<\/strong>.<\/li><li>Click <strong>Convert<\/strong>, then download your WebP still (or the set of stills).<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Two details worth knowing: the output is a <strong>still image or a set of separate stills \u2014 not an animated WebP<\/strong> (the tool\u2019s FAQ states this outright), and if your WebM uses VP9 with an alpha channel, the transparency carries over, since WebP supports 8-bit alpha. Your file uploads over an encrypted connection, is processed on our servers and deleted automatically a few hours later.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n\n<h5 class=\"wp-block-heading\">Is WebM an image or a video?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>WebM is a video format<\/strong> \u2014 a container holding VP8\/VP9 video and Vorbis\/Opus audio, per the WebM Project\u2019s own definition. The image format with the nearly identical name is <strong>WebP<\/strong>. Quick tell: if the file has a duration or sound, it\u2019s WebM; if it\u2019s a single picture (or a small silent loop for an <code>&lt;img&gt;<\/code> tag), it\u2019s WebP.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Can a WebP file have sound?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>No.<\/strong> WebP is an image format and has no audio track \u2014 there is nowhere in the format to store sound. If your file plays audio, it\u2019s a video (quite possibly WebM). This is the fastest way to tell the two apart.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Can I turn a WebM video into an animated WebP?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Not with this converter \u2014 the <a href=\"https:\/\/www.xconvert.com\/convert-webm-to-webp\">WebM to WebP tool<\/a> <strong>outputs still images only<\/strong> (one frame, or several separate screenshots); its FAQ says explicitly that it does not produce an animated, looping WebP. If an animated WebP is the goal, the reliable path on xconvert is starting from a GIF with the <a href=\"https:\/\/www.xconvert.com\/convert-gif-to-webp\">GIF to WebP converter<\/a>, which preserves frames, timing, and looping. And if you just need the clip to <em>move<\/em> on a web page, it\u2019s already a video \u2014 embed the WebM (or an MP4) in a <code>&lt;video&gt;<\/code> tag instead.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Why does animated WebP even exist if WebM is right there?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Because plenty of places accept images but not video. An animated WebP drops into an <code>&lt;img&gt;<\/code> tag, a sticker slot, or a chat emote with no player controls, no audio track, and no video pipeline \u2014 while still being about <strong>64% smaller than the equivalent GIF<\/strong> by Google\u2019s measurements. WebM is the better format for actual video content; animated WebP is the better format for GIF-style decoration.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Can I convert WebP to WebM?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Technically yes \u2014 the <a href=\"https:\/\/www.xconvert.com\/convert-webp-to-webm\">WebP to WebM converter<\/a> turns the image into a video file \u2014 but know the limitation first: in our July 2026 test, an <strong>animated<\/strong> WebP came out as a single-frame video (only the first frame survives). If your animated WebP needs to end up as video, go through GIF instead: <a href=\"https:\/\/www.xconvert.com\/convert-webp-to-gif\">WebP to GIF<\/a> keeps every frame (verified with the same test file), and GIF converts cleanly to video from there. A <em>still<\/em> WebP simply becomes a video slide of that image.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Does WebM play on iPhones and Safari?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>On recent versions, yes.<\/strong> Per caniuse, Safari 16+ on macOS and iOS Safari 17.4+ have full WebM support; earlier Apple versions were partial or lacked it entirely, which is why WebM playback complaints were overwhelmingly an Apple-device story. If a recipient\u2019s device still refuses the file, convert it once to MP4 (H.264) with the <a href=\"https:\/\/www.xconvert.com\/convert-webm-to-mp4\">WebM to MP4 converter<\/a> and it will play essentially anywhere.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Which should I use on my website \u2014 WebM or WebP?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Match the format to the media type. <strong>Video content \u2192 WebM<\/strong> (open, efficient, ~96% browser support \u2014 with an MP4 fallback if you need every last device). <strong>Images \u2192 WebP<\/strong> (25\u201334% smaller than JPEG, 26% smaller than PNG, alpha supported). <strong>GIF-style loops \u2192 animated WebP.<\/strong> The one-letter difference stops mattering once you sort by \u201cdoes it move and make sound, or is it a picture?\u201d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Last verified 2026-07-15.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.webmproject.org\/about\/\">The WebM Project \u2014 About<\/a> \u2014 official definition: open, royalty-free media file format; VP8\/VP9 video, Vorbis\/Opus audio; Matroska-based container; BSD-style license.<\/li><li><a href=\"https:\/\/www.webmproject.org\/about\/faq\/\">The WebM Project \u2014 FAQ<\/a> \u2014 WebM streams: VP8\/VP9 video, Vorbis\/Opus audio, WebVTT text tracks.<\/li><li><a href=\"https:\/\/developers.google.com\/speed\/webp\">Google \u2014 An image format for the Web (WebP docs)<\/a> \u2014 WebP definition; lossless 26% smaller than PNG; lossy 25\u201334% smaller than JPEG at equivalent SSIM; alpha costs; animated WebP; VP8-keyframe predictive coding.<\/li><li><a href=\"https:\/\/developers.google.com\/speed\/webp\/faq\">Google \u2014 WebP FAQ<\/a> \u2014 16,383 \u00d7 16,383 max dimensions; animated GIF \u2192 lossy WebP \u224864% smaller (lossless \u224819%); VP8 bitstream compatibility.<\/li><li><a href=\"https:\/\/caniuse.com\/webm\">caniuse \u2014 WebM video format<\/a> \u2014 browser support matrix: Chrome 25+, Firefox 28+, Edge 79+, Safari 16+, iOS Safari 17.4+; \u224896% global.<\/li><li><a href=\"https:\/\/caniuse.com\/webp\">caniuse \u2014 WebP image format<\/a> \u2014 browser support matrix: Chrome 32+, Firefox 65+, Edge 18+, Safari 16+ (iOS 14+); \u224896% global.<\/li><li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Media\/Guides\/Formats\/Containers\">MDN \u2014 Media container formats<\/a> \u2014 WebM (\u201cWeb Media\u201d) is Matroska-based; supported codecs include AV1, VP8, VP9 video and Opus, Vorbis audio.<\/li><li><a href=\"https:\/\/blog.chromium.org\/2010\/09\/webp-new-image-format-for-web.html\">Chromium Blog \u2014 WebP, a new image format for the Web (Sept 30, 2010)<\/a> \u2014 original WebP announcement date.<\/li><li><a href=\"https:\/\/blog.chromium.org\/2010\/05\/webm-and-vp8-land-in-chromium.html\">Chromium Blog \u2014 WebM and VP8 land in Chromium (May 19, 2010)<\/a> \u2014 WebM\u2019s May 2010 launch.<\/li><li><a href=\"https:\/\/www.xconvert.com\/convert-webm-to-webp\">xconvert \u2014 WebM to WebP converter<\/a> \u2014 live tool UI and FAQ: still-frame output (Specific Frame \/ Multiple Screenshots), no animated WebP output, VP9-alpha carry-over.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>WebM is a video container; WebP is an image format \u2014 one letter apart and easy to mix up. What each does, where it plays, and how to convert between them.<\/p>\n","protected":false},"author":3,"featured_media":1442,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,14],"tags":[],"class_list":["post-1443","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to-guides","category-tools"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>WebM vs WebP Difference: One Is a Video, One Is an Image<\/title>\n<meta name=\"description\" content=\"WebM is a video container; WebP is an image format \u2014 one letter apart and easy to mix up. 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