{"id":949,"date":"2026-07-11T09:13:00","date_gmt":"2026-07-11T13:13:00","guid":{"rendered":"https:\/\/www.xconvert.com\/blog\/?p=949"},"modified":"2026-06-27T03:00:22","modified_gmt":"2026-06-27T07:00:22","slug":"compress-heic-images","status":"publish","type":"post","link":"https:\/\/www.xconvert.com\/blog\/compress-heic-images","title":{"rendered":"How to Compress HEIC Images (Without Making Them Bigger)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">You tried to attach a single HEIC photo to a storage-limited form or email, and it was still bigger than you wanted. Here\u2019s the catch most \u201ccompress HEIC\u201d guides won\u2019t tell you: HEIC is <strong>already<\/strong> one of the most efficient image formats in common use \u2014 roughly half the size of the same photo as a JPEG \u2014 because it\u2019s compressed with the HEVC (H.265) video codec. So there\u2019s far less fat to trim than there\u2019d be in a JPEG or PNG, and the single most common \u201cfix,\u201d converting HEIC to JPG to shrink it, almost always makes the file <strong>bigger<\/strong>. This guide sets honest expectations, shows the two levers that actually work, and walks the exact steps on xconvert. We verified the efficiency claims against Apple and the ISO\/MPEG standards.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quick answer:<\/strong> A HEIC file is already HEVC-compressed and <strong>about half the size of an equivalent JPEG<\/strong>, so don\u2019t expect dramatic shrinkage from re-compressing it. The two levers that genuinely reduce a HEIC\u2019s size are <strong>(1) re-encoding at a lower quality<\/strong> and <strong>(2) reducing the pixel dimensions<\/strong> (resolution). Do <strong>not<\/strong> \u201ccompress\u201d by converting HEIC \u2192 JPG: JPEG is the less efficient format, so that usually produces a <strong>larger<\/strong> file. Keep it HEIC, lower the quality and\/or resolution, and the file shrinks while staying in the efficient format.<\/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=\"#why-small\">Why HEIC is already small<\/a><\/li><li><a href=\"#levers\">The two levers that actually shrink a HEIC<\/a><\/li><li><a href=\"#jpg-trap\">The HEIC \u2192 JPG \u201ccompression\u201d trap<\/a><\/li><li><a href=\"#realistic\">How much smaller can you realistically get?<\/a><\/li><li><a href=\"#tool\">Compress HEIC on xconvert<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-small\">Why HEIC is already small<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">HEIC is Apple\u2019s name for an image stored in the <strong>HEIF<\/strong> container (ISO\/IEC 23008-12, MPEG-H Part 12) using the <strong>HEVC \/ H.265<\/strong> codec (ITU-T H.265 \/ ISO\/IEC 23008-2) \u2014 the same modern compression that makes 4K video files manageable, applied to a still photo. Since iOS 11, \u201cHigh Efficiency\u201d has been the default camera format on iPhone 7 and later, and Apple\u2019s own pitch was blunt: the format \u201clets you take new photos with the same quality as before but at <strong>half the file size<\/strong>.\u201d Apple\u2019s support documentation puts it the same way \u2014 \u201cHEIF and HEVC offer <strong>better compression than JPEG and H.264<\/strong>, so they use less storage space.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The reason matters for compression. HEVC does far more work per pixel than JPEG\u2019s decades-old algorithm \u2014 larger, more flexible block sizes and smarter prediction \u2014 and Fraunhofer HHI, one of the institutes behind the standard, puts HEVC at roughly <strong>50% bit-rate reduction at the same quality<\/strong> versus the older H.264\/AVC generation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The practical consequence: <strong>a HEIC file has already had most of the easy savings squeezed out of it.<\/strong> Compressing a JPEG or PNG often means working with a format that left a lot of redundancy on the table; compressing a HEIC means shrinking something already near the efficient frontier. The headroom is real but modest \u2014 set your expectations accordingly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"levers\">The two levers that actually shrink a HEIC<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are only two things that reliably reduce a HEIC file\u2019s size. Everything else (renaming, changing a DPI metadata tag, re-saving without changing settings) does essentially nothing to the encoded bytes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Re-encode at a lower quality.<\/strong> HEVC is a lossy codec with a quality parameter. Lowering it tells the encoder to discard more fine detail in exchange for fewer bytes. Because HEIC starts efficient, you can often drop the quality a notch with no perceptible change on a phone screen \u2014 but past a point you\u2019ll see softening and blocking, just as with any lossy format. One quirk to know: if a HEIC was already saved at, say, quality 70, asking an encoder for quality 80 won\u2019t shrink it (you can\u2019t add detail back), and may even grow it. If a quality setting doesn\u2019t reduce the size, <strong>set it lower<\/strong>, not higher.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Reduce the pixel dimensions (resolution).<\/strong> This is the lever people forget, and it\u2019s the most dependable one. A modern iPhone shoots roughly 12-megapixel images (about 4032\u00d73024); if the photo only needs to live on the web, in a document, or in a chat, you almost certainly don\u2019t need full resolution. Scaling 4032\u00d73024 down to, say, 1920\u00d71440 removes three-quarters of the pixels \u2014 and file size scales with pixel count far more directly than any quality tweak. When a HEIC is \u201cstubborn\u201d and won\u2019t shrink on quality alone, downscaling is what finally moves the number.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In practice you combine the two: drop the resolution to what the photo actually needs, then trim quality a little if you need to go smaller still.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"jpg-trap\">The HEIC \u2192 JPG \u201ccompression\u201d trap<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is the most common mistake, and it\u2019s worth stating plainly: <strong>converting a HEIC to a JPG to make it smaller usually makes it bigger.<\/strong> JPEG is the <em>less<\/em> efficient format \u2014 that\u2019s the whole reason Apple switched away from it. Apple\u2019s own framing was that HEIC delivers the same quality \u201cat half the file size\u201d of JPEG, which means going the other direction, HEIC \u2192 JPG, you\u2019d commonly expect the JPEG to land around <strong>twice<\/strong> the size at matched quality. (The HEIF specification\u2019s own measurements show JPEG needing on the order of <strong>2.39\u00d7<\/strong> the bytes for equivalent objective quality.)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So when does HEIC \u2192 JPG make sense? When you need <strong>compatibility<\/strong>, not size. Outside the Apple ecosystem, native HEIC support is thin \u2014 only <strong>Safari 17+<\/strong> opens HEIC in the browser; Chrome, Firefox, and Edge do not. If you\u2019re emailing a photo to a Windows colleague or uploading to a site that rejects HEIC, convert to JPG and accept the size increase as the price of it opening everywhere. For that whole keep-vs-convert decision, see <a href=\"https:\/\/www.xconvert.com\/blog\/heic-vs-jpg-iphone-photos\/\">HEIC vs JPG for iPhone photos<\/a>, and for the format itself, <a href=\"https:\/\/www.xconvert.com\/blog\/what-is-heic\/\">What is a HEIC file?<\/a>. But if your goal is purely a <strong>smaller<\/strong> file, stay in HEIC and use the two levers above.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"realistic\">How much smaller can you realistically get?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Because HEIC starts compressed, treat any \u201c90% smaller!\u201d promise with suspicion \u2014 that number comes from compressing a bloated JPEG, not an already-efficient HEIC. Realistic outcomes:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>What you do<\/th><th>Typical effect on a HEIC<\/th><\/tr><\/thead><tbody><tr><td>Drop quality one notch (e.g. 80 \u2192 60)<\/td><td>Modest savings, often little visible loss on screen<\/td><\/tr><tr><td>Drop quality aggressively (e.g. \u2192 40)<\/td><td>Larger savings, visible softening on close inspection<\/td><\/tr><tr><td>Downscale resolution (e.g. 12 MP \u2192 ~2 MP)<\/td><td>The biggest, most reliable reduction<\/td><\/tr><tr><td>Both together<\/td><td>Smallest file; tune to your size target<\/td><\/tr><tr><td>Convert HEIC \u2192 JPG<\/td><td>Usually <strong>bigger<\/strong>, not smaller (do this only for compatibility)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The honest framing: a stubborn HEIC that\u2019s \u201calready small\u201d is a sign the format did its job. If you need it meaningfully smaller, the resolution lever \u2014 not the quality slider \u2014 is what gets you there, and a tool that lets you set an exact target size will pick the settings for you.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool\">Compress HEIC on xconvert<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.xconvert.com\/compress-heic\">xconvert HEIC compressor<\/a> keeps the file in HEIC and lets you compress by quality, by resolution, or to an exact size \u2014 so you apply the levers above without guessing settings:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Open <a href=\"https:\/\/www.xconvert.com\/compress-heic\">xconvert.com\/compress-heic<\/a> and click <strong>Upload<\/strong> to add your photo (from your computer, Google Drive, or Dropbox). You can add several HEIC files at once for batch compression.<\/li><li>Open <strong>Advanced Options<\/strong> (the gear icon). The page notes its defaults are tuned for good results, so you can also just compress with the defaults.<\/li><li>Choose how to control size: <strong>Target file size (%)<\/strong> (marked <em>Best<\/em>) to shrink by a percentage, <strong>Specific file size<\/strong> to hit an exact size in MB, or the <strong>Image Quality (%)<\/strong> slider to set the HEVC quality directly. Leave <strong>Auto Scale<\/strong> on to let it downscale the dimensions intelligently when that\u2019s what\u2019s needed to reach your target.<\/li><li>Click <strong>Compress<\/strong>.<\/li><li>Download each result, or grab them all as a <strong>ZIP<\/strong>. The output stays in HEIC format, so you keep the efficient codec.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Your file uploads over an encrypted connection, is processed on our servers, and is automatically deleted a few hours later. Nothing stays around.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the file is \u201ccompatibility-stubborn\u201d rather than too big \u2014 it just won\u2019t open on a non-Apple device \u2014 converting to JPG is the right move there, even though it grows; see <a href=\"https:\/\/www.xconvert.com\/blog\/heic-vs-jpg-iphone-photos\/\">HEIC vs JPG for iPhone photos<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n\n<h5 class=\"wp-block-heading\">Why won\u2019t my HEIC file get much smaller?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Because <strong>HEIC is already compressed<\/strong> with HEVC (H.265) and is roughly half the size of the same photo as a JPEG to begin with \u2014 there\u2019s little easy redundancy left to remove. The most reliable way to shrink it further is to <strong>reduce the pixel dimensions<\/strong> (resolution), not just nudge the quality slider. If lowering quality does nothing, the file was likely already saved at a low quality, so set the quality value <em>lower<\/em> than its current level rather than higher.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Does converting HEIC to JPG reduce the file size?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Usually <strong>no \u2014 it makes the file bigger.<\/strong> JPEG is the less efficient format; Apple adopted HEIC specifically because it delivers the same quality at about half a JPEG\u2019s size. Converting HEIC \u2192 JPG at matched quality typically lands around twice the size. Convert to JPG only when you need <strong>compatibility<\/strong> (Windows, the web, older apps), not when you want a smaller file.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">What\u2019s the best way to compress a HEIC without losing quality?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Reduce the <strong>resolution<\/strong> to only what you actually need (web, chat, and documents rarely need a full 12-megapixel image), since fewer pixels means a smaller file with no per-pixel quality loss in the part that remains. Combine that with a small quality reduction if needed. A tool with a <strong>Target file size<\/strong> option does this for you \u2014 set the size, and it picks the quality\/resolution to match.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Can HEIC even be opened on Windows or in Chrome?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Native support is limited. In browsers, only <strong>Safari 17 and later<\/strong> opens HEIC; Chrome, Firefox, and Edge do not. On Windows you generally need Microsoft\u2019s HEIF\/HEVC extensions or a third-party app. This is exactly why the <em>compatibility<\/em> play is to convert to JPG \u2014 at the cost of a bigger file.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Will compressing a HEIC strip the depth, Live Photo, or HDR data?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">It depends on the tool, but re-encoding generally produces a standard still HEIC and may not preserve auxiliary data like depth maps, Live Photo video pairs, or HDR gain maps. If those matter, keep an untouched original and compress a copy.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">How do I make iPhone photos smaller before I even take them?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Open <strong>Settings \u2192 Camera \u2192 Formats<\/strong> and confirm <strong>High Efficiency<\/strong> is selected (the HEIC default) rather than <strong>Most Compatible<\/strong> (which saves bigger JPEGs). High Efficiency already roughly halves the size versus JPEG. For an existing photo, downscale and re-compress it with a HEIC compressor as above.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Last verified 2026-06-25.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/support.apple.com\/en-us\/116944\">Apple \u2014 Using HEIF or HEVC media on Apple devices<\/a> \u2014 \u201cHEIF and HEVC offer better compression than JPEG and H.264, so they use less storage space\u201d; High Efficiency vs Most Compatible camera settings; supported devices (iPhone 7+, iOS 11+).<\/li><li><a href=\"https:\/\/www.macworld.com\/article\/672609\/what-is-heic.html\">Macworld \u2014 What is HEIC? (quoting Apple\u2019s iOS 11 announcement)<\/a> \u2014 Apple: HEIF technology \u201clets you take new photos with the same quality as before but at half the file size.\u201d<\/li><li><a href=\"https:\/\/www.hhi.fraunhofer.de\/en\/departments\/vca\/technologies-and-solutions\/h265-hevc.html\">Fraunhofer HHI \u2014 H.265 \/ HEVC<\/a> \u2014 \u201cHEVC achieves about 50% bit-rate reduction at the same subjective video quality\u201d vs H.264\/AVC.<\/li><li><a href=\"https:\/\/www.loc.gov\/preservation\/digital\/formats\/fdd\/fdd000525.shtml\">Library of Congress \u2014 HEIF (High Efficiency Image File Format), MPEG-H Part 12<\/a> \u2014 HEIF defined as ISO\/IEC 23008-12; HEVC (ISO\/IEC 23008-2 \/ ITU-T H.265) as the default codec; HEIC = HEIF with HEVC.<\/li><li><a href=\"https:\/\/caniuse.com\/heif\">caniuse \u2014 HEIF\/HEIC image format<\/a> \u2014 browser support: Safari 17+ only; Chrome, Firefox, Edge do not natively decode HEIC.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>HEIC is already half a JPEG&#8217;s size. Learn the two levers that actually compress HEIC images, why HEIC-to-JPG makes files bigger, and how to do it free.<\/p>\n","protected":false},"author":3,"featured_media":1371,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,14],"tags":[],"class_list":["post-949","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>How to Compress HEIC Images (Without Making Them Bigger)<\/title>\n<meta name=\"description\" content=\"HEIC is already half a JPEG&#039;s size. 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