{"id":1704,"date":"2026-10-06T15:13:00","date_gmt":"2026-10-06T19:13:00","guid":{"rendered":"https:\/\/www.xconvert.com\/blog\/?p=1704"},"modified":"2026-07-16T23:44:50","modified_gmt":"2026-07-17T03:44:50","slug":"file-types-wasting-storage","status":"publish","type":"post","link":"https:\/\/www.xconvert.com\/blog\/file-types-wasting-storage","title":{"rendered":"File Types Wasting the Most Storage (and How to Shrink Each)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Your cloud drive flashes \u201cstorage almost full,\u201d or a folder you meant to email turns out to be three times the attachment limit. Before you pay for more space, it\u2019s worth knowing that a handful of file types are responsible for most of the waste \u2014 and that they shrink dramatically not because a compressor is doing anything magical, but because the format was a poor fit for what it was holding. This guide ranks the worst offenders using xconvert\u2019s own production data (a 30-day sample of real conversions), explains <em>why<\/em> each one is bloated, and points every format at the right one-click fix. Every format fact below is checked against the Library of Congress, the W3C, and MDN.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quick answer:<\/strong> The biggest storage wasters are formats that store data raw or keep more detail than the content needs. In xconvert\u2019s production data (30-day sample), <strong>TIFF<\/strong> shrinks the most \u2014 a median <strong>~85%<\/strong> \u2014 followed by scan-heavy <strong>PDFs (~72%)<\/strong> and <strong>PNGs<\/strong> used for photos or screenshots <strong>(~67%)<\/strong>. A large reduction means the original format was inefficient <em>for that content<\/em> (uncompressed, lossless, or over-bitrate), so most of its bytes were removable weight. The lasting fix is usually to move each file to a format built for its job: <strong>TIFF\/BMP \u2192 PNG or JPG<\/strong>, <strong>WAV \u2192 FLAC or MP3<\/strong>, <strong>GIF \u2192 MP4<\/strong> \u2014 or simply re-compress scans and over-bitrate video in place.<\/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=\"#how-to-read\">How to read these numbers<\/a><\/li><li><a href=\"#ranked\">The file types wasting the most storage, ranked<\/a><\/li><li><a href=\"#uncompressed\">Uncompressed by design: TIFF, BMP, and WAV<\/a><\/li><li><a href=\"#lossless-outdated\">Lossless or outdated: PNG and GIF<\/a><\/li><li><a href=\"#right-format\">Right format, wrong settings: scanned PDFs and over-bitrate MP4<\/a><\/li><li><a href=\"#tool\">How to shrink any of these on xconvert<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-to-read\">How to read these numbers<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Each percentage below is a <strong>median size reduction<\/strong> measured across real files of that type run through xconvert over a 30-day window. Read it as a \u201chow much removable weight was this file carrying?\u201d score, not as a rating of the tool.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That distinction matters: a big reduction is a signal about the <strong>source format<\/strong>, not the compressor. A TIFF drops ~85% because it stored the page as raw pixels \u2014 enormous slack to remove \u2014 while files that are <em>already<\/em> efficient (a JPEG, an MP3, an H.265 video at a sane bitrate) barely move, because there\u2019s little left to squeeze. A small reduction isn\u2019t a worse result; it\u2019s an already-lean file.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nearly every entry here is bloated for one of three reasons, which is how the fixes below are grouped:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Uncompressed by design<\/strong> (TIFF, BMP, WAV) \u2014 the format stores raw samples with no compression assumed.<\/li><li><strong>Lossless or outdated<\/strong> (PNG, GIF) \u2014 the format preserves more than the content needs, or uses a dated, inefficient scheme.<\/li><li><strong>Right format, wrong settings<\/strong> (scanned PDFs, over-bitrate MP4) \u2014 an efficient format bloated by its <em>content<\/em> (a page stored as a photo) or <em>settings<\/em> (a needlessly high bitrate).<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"ranked\">The file types wasting the most storage, ranked<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ranked by how much the median file shrinks \u2014 the higher the number, the more slack the format was carrying:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Rank<\/th><th>File type<\/th><th>Why it\u2019s bloated<\/th><th>Median size cut*<\/th><th>Where to shrink it<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td><strong>TIFF<\/strong><\/td><td>Raster wrapper, usually uncompressed or lossless LZW; built for archival quality<\/td><td><strong>~85%<\/strong><\/td><td>TIFF Compressor \u00b7 or convert to PNG\/JPG<\/td><\/tr><tr><td>2<\/td><td><strong>Scan-heavy PDF<\/strong><\/td><td>Each page is a full-resolution raster image, often barely compressed<\/td><td><strong>~72%<\/strong><\/td><td>PDF Compressor<\/td><\/tr><tr><td>3<\/td><td><strong>PNG<\/strong> (photos\/screenshots)<\/td><td>Lossless \u2014 keeps every pixel exactly, even when the eye can\u2019t tell<\/td><td><strong>~67%<\/strong><\/td><td>PNG Compressor \u00b7 or convert photos to JPG\/WebP<\/td><\/tr><tr><td>4<\/td><td><strong>GIF<\/strong><\/td><td>256-color palette + dated LZW animation, far heavier than modern video<\/td><td><strong>~58%<\/strong><\/td><td>Video Compressor \u00b7 or convert to MP4<\/td><\/tr><tr><td>5<\/td><td><strong>BMP<\/strong><\/td><td>Uncompressed raster bitmap<\/td><td><strong>~57%<\/strong><\/td><td>Image Compressor \u00b7 or convert to PNG<\/td><\/tr><tr><td>6<\/td><td><strong>WAV<\/strong><\/td><td>Uncompressed PCM audio<\/td><td><strong>~50%<\/strong><\/td><td>Audio Compressor \u00b7 or convert to FLAC\/MP3<\/td><\/tr><tr><td>7<\/td><td><strong>Over-bitrate MP4<\/strong><\/td><td>Efficient format, but the bitrate was set higher than the content needs<\/td><td><strong>~46%<\/strong><\/td><td>Video Compressor (re-encode)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">*Median size reduction, xconvert production data (30-day sample). Your own result depends on the original file\u2019s settings and content \u2014 an already-efficient file will save less.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"uncompressed\">Uncompressed by design: TIFF, BMP, and WAV<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These three formats share a root cause: they store their data <strong>raw<\/strong>. There\u2019s no compression built into the typical file, so the byte count is close to the theoretical maximum \u2014 which is exactly why they top the \u201cremovable weight\u201d chart.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>TIFF \u2014 the #1 waster (~85% median reduction).<\/strong> TIFF is a tag-based wrapper for raster images, built for scans and print masters where quality is the priority (<a href=\"https:\/\/www.loc.gov\/preservation\/digital\/formats\/fdd\/fdd000022.shtml\">Library of Congress \u2014 TIFF, Revision 6.0<\/a>). In practice most files carry no meaningful compression: MDN notes that \u201cMost TIFF files are uncompressed, but lossless PackBits and LZW compression are supported, as is lossy JPEG compression\u201d (<a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Media\/Guides\/Formats\/Image_types\">MDN \u2014 Image file type and format guide<\/a>). Great for an archive, wasteful for anything you just need to store or send. The fix depends on your goal: re-compress it in place with the <a href=\"https:\/\/www.xconvert.com\/compress-tiff\">TIFF Compressor<\/a> (which offers a JPEG-style <strong>Compression Type<\/strong> and an <strong>Image Quality (%)<\/strong> you set), or \u2014 for lasting savings \u2014 convert it to <strong>PNG<\/strong> (still lossless, far smaller) or <strong>JPG<\/strong> (smallest) using the <a href=\"https:\/\/www.xconvert.com\/image-compressor\">Image Compressor<\/a>\u2019s output-format dropdown.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>BMP (~57%).<\/strong> BMP is the plainest case of all. As MDN warns, \u201cThe most common form of BMP file represents the data as an uncompressed raster image, resulting in large file sizes compared to png or jpg image types,\u201d and the Library of Congress confirms that most BMP files have historically been stored uncompressed (<a href=\"https:\/\/www.loc.gov\/preservation\/digital\/formats\/fdd\/fdd000189.shtml\">Library of Congress \u2014 BMP, Version 5<\/a>). There\u2019s almost never a reason to keep a photo or screenshot as a BMP: run it through the <a href=\"https:\/\/www.xconvert.com\/image-compressor\">Image Compressor<\/a> and set the <strong>Image File Extension<\/strong> to <strong>PNG<\/strong> for an equivalent lossless image at a fraction of the size, or <strong>JPG<\/strong> if it\u2019s a photo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>WAV (~50%).<\/strong> WAV is the audio equivalent. It\u2019s a wrapper that nearly always carries uncompressed linear PCM \u2014 MDN\u2019s container guide describes WAV as containing \u201cuncompressed PCM audio, delivering the highest fidelity at the cost of larger file sizes,\u201d and the Library of Congress documents WAVE as an audio wrapper whose common encoding is LPCM (<a href=\"https:\/\/www.loc.gov\/preservation\/digital\/formats\/fdd\/fdd000001.shtml\">Library of Congress \u2014 WAVE Audio File Format<\/a>). Unless you\u2019re mastering audio, that fidelity is invisible. Drop the file into the <a href=\"https:\/\/www.xconvert.com\/audio-compressor\">Audio Compressor<\/a> and set the <strong>Audio File Extension<\/strong> to <strong>FLAC<\/strong> (lossless but smaller) or <strong>MP3<\/strong> (biggest reduction).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"lossless-outdated\">Lossless or outdated: PNG and GIF<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These formats aren\u2019t storing raw data \u2014 they <em>do<\/em> compress \u2014 but they hold on to more than most content needs, or they use a scheme that modern formats have long outclassed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PNG (~67%).<\/strong> PNG is a genuinely good format used for the wrong job. The W3C specification defines PNG as a format for \u201cthe lossless, portable, well-compressed storage of static and animated raster images,\u201d with losslessness as an explicit design goal (<a href=\"https:\/\/www.w3.org\/TR\/png-3\/\">W3C \u2014 PNG Specification, Third Edition<\/a>). Lossless is perfect for screenshots, logos, and transparency \u2014 but for a <em>photograph<\/em>, keeping every exact pixel is wasteful, because the eye won\u2019t miss what a lossy encoder discards. MDN\u2019s advice: prefer PNG \u201cfor lossless and indexed still images,\u201d while photographs \u201cfare well with lossy compression,\u201d making JPEG and WebP the better choice (<a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Media\/Guides\/Formats\/Image_types\">MDN \u2014 Image file type and format guide<\/a>). Keep graphics as PNG and shrink them with the <a href=\"https:\/\/www.xconvert.com\/compress-png\">PNG Compressor<\/a> (its <strong>Colors<\/strong> reduction and <strong>Image Quality (%)<\/strong> do most of the work); if the \u201cPNG\u201d is really a photo, convert it to JPG or WebP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>GIF (~58%).<\/strong> GIF is the outdated one. Each pixel is an index into a palette of at most 256 colors \u2014 MDN describes GIF as using \u201c8-bit indexed color\u201d and the Lempel-Ziv-Welch (LZW) algorithm (<a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Media\/Guides\/Formats\/Image_types\">MDN \u2014 Image file type and format guide<\/a>). That was clever in 1987 but is wildly inefficient for anything beyond a tiny loop. The most effective fix is to stop using GIF for motion and convert to <strong>MP4 (H.264)<\/strong>, purpose-built for it \u2014 we measured that swap in <a href=\"https:\/\/www.xconvert.com\/blog\/gif-vs-mp4-file-size\">GIF vs MP4 file size<\/a>. Do the conversion (or just re-compress the GIF) on the <a href=\"https:\/\/www.xconvert.com\/video-compressor\">Video Compressor<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"right-format\">Right format, wrong settings: scanned PDFs and over-bitrate MP4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The last two aren\u2019t inefficient formats at all. PDF and MP4 are both perfectly capable \u2014 they got fat because of what was put inside them or how they were exported.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Scan-heavy PDF (~72%).<\/strong> A typed PDF stores text as characters and stays tiny. A <em>scanned<\/em> PDF stores each page as a full-resolution raster image \u2014 a photo of the page \u2014 so it inherits an image\u2019s bloat, multiplied by the page count and often with weak compression baked in. The full breakdown of DPI, color mode, and compression is in <a href=\"https:\/\/www.xconvert.com\/blog\/why-is-my-scanned-pdf-so-big\">Why is my scanned PDF so big?<\/a>. The fix isn\u2019t to re-scan \u2014 it\u2019s to re-compress the page images. The <a href=\"https:\/\/www.xconvert.com\/compress-pdf\">PDF Compressor<\/a> downsamples and re-encodes them; pick the <strong>Screen (Best)<\/strong> or <strong>Ebook<\/strong> preset for the biggest reduction, or <strong>Printer<\/strong>\/<strong>Prepress<\/strong> if you still need to print it cleanly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Over-bitrate MP4 (~46%).<\/strong> MP4 with H.264 or H.265 is one of the most efficient formats there is \u2014 which is why it sits at the <em>bottom<\/em> of this list. Its ~46% median reduction isn\u2019t the format being wasteful; it\u2019s that exports, screen recordings, and phone captures often use a far higher bitrate than the footage needs. Re-encoding at a sensible target reclaims that excess without leaving an already-good format. On the <a href=\"https:\/\/www.xconvert.com\/video-compressor\">Video Compressor<\/a>, choose <strong>Target file size (%)<\/strong> or <strong>Specific file size<\/strong> to name an outcome, or <strong>Constant Quality<\/strong> (CRF) to let the encoder spend bits only where they matter; H.265\/HEVC or AV1 squeeze further than H.264 at the same quality.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool\">How to shrink any of these on xconvert<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every tool above is a free online converter \u2014 no account, no software to install. The flow is the same on all of them:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Open the compressor that matches your file: the <a href=\"https:\/\/www.xconvert.com\/compress-tiff\">TIFF Compressor<\/a>, <a href=\"https:\/\/www.xconvert.com\/compress-png\">PNG Compressor<\/a>, <a href=\"https:\/\/www.xconvert.com\/image-compressor\">Image Compressor<\/a> (BMP and other image types), <a href=\"https:\/\/www.xconvert.com\/compress-pdf\">PDF Compressor<\/a>, <a href=\"https:\/\/www.xconvert.com\/video-compressor\">Video Compressor<\/a> (MP4 or GIF), or <a href=\"https:\/\/www.xconvert.com\/audio-compressor\">Audio Compressor<\/a> (WAV). Each page\u2019s heading names the format, so you know you\u2019re in the right place.<\/li><li>Click <strong>Upload<\/strong> \u2014 or drag the file onto the drop zone \u2014 to add one or more files.<\/li><li>Set your target. On the image, video, and audio tools, choose <strong>Target file size (%)<\/strong> to let xconvert pick a sensible size automatically, or <strong>Specific file size<\/strong> to enter an exact number. On the <strong>PDF Compressor<\/strong>, pick a preset instead \u2014 <strong>Screen (Best)<\/strong> or <strong>Ebook<\/strong> for the largest cut, <strong>Printer<\/strong> or <strong>Prepress<\/strong> to preserve print quality.<\/li><li>For lasting savings, change the output format under the extension dropdown: set a TIFF or BMP to <strong>PNG<\/strong> or <strong>JPG<\/strong>, a <strong>WAV<\/strong> to <strong>FLAC<\/strong> or <strong>MP3<\/strong> via <strong>Audio File Extension<\/strong>, or export a GIF as <strong>MP4<\/strong>. Open <strong>Advanced Options<\/strong> to fine-tune \u2014 for example <strong>Image Quality (%)<\/strong>, the <strong>Compression Type<\/strong> on TIFF, <strong>Colors<\/strong> on PNG\/GIF, or the codec and <strong>Constant Quality<\/strong> on video.<\/li><li>Click the compress (or convert) button and download the result. Every file you upload is processed on our servers and deleted automatically a few hours later \u2014 there\u2019s no watermark, and nothing is stored.<\/li><\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n\n<h5 class=\"wp-block-heading\">Which file type wastes the most storage space?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">In xconvert\u2019s production data (30-day sample), <strong>TIFF<\/strong> shrinks the most \u2014 a median of about <strong>85%<\/strong> \u2014 which makes it the biggest waster on a per-file basis. That\u2019s because TIFF is typically stored uncompressed or with lossless LZW, so it carries far more removable weight than a format built for delivery. Scan-heavy PDFs (~72%) and PNGs used for photographs (~67%) come next.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Does a big compression percentage mean the tool is doing something magical?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">No \u2014 and this is the key mental model. A large reduction means the <strong>original format was a poor fit for its content<\/strong>: it was storing raw samples (TIFF, BMP, WAV), keeping every exact pixel of a photo (PNG), or using more bitrate than needed (MP4). Most of those bytes were removable. A file that\u2019s already efficiently encoded \u2014 a JPEG, an MP3 \u2014 will barely shrink, because there\u2019s nothing left to remove.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Is it better to compress a file or convert it to a different format?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">For <strong>uncompressed formats<\/strong> (TIFF, BMP, WAV), converting to a modern format usually gives the most lasting savings: TIFF\/BMP \u2192 <strong>PNG<\/strong> or <strong>JPG<\/strong>, and WAV \u2192 <strong>FLAC<\/strong> (lossless) or <strong>MP3<\/strong> (lossy). For an <strong>efficient format bloated by its content or settings<\/strong> (a scanned PDF, an over-bitrate MP4), re-compressing in place is normally enough \u2014 there\u2019s no wasteful format to escape.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Why is my PNG so big when PNG is a \u201ccompressed\u201d format?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Because PNG compression is <strong>lossless<\/strong> \u2014 by design it preserves every pixel exactly (<a href=\"https:\/\/www.w3.org\/TR\/png-3\/\">W3C \u2014 PNG Specification<\/a>). That\u2019s ideal for screenshots, logos, and transparency, but wasteful for photographs, where a lossy format like JPEG or WebP throws away detail the eye can\u2019t see and lands far smaller. Keep graphics as PNG; convert photos-as-PNG to JPG or WebP.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Are these percentages guaranteed for my files?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">No. They\u2019re <strong>medians<\/strong> from xconvert production data over a 30-day sample, so half of files did better and half did worse. Your result depends on the source file\u2019s original settings and content \u2014 resolution, color mode, bitrate, and whether it was already compressed. Treat the numbers as a ranking of which formats to target first, not a promise.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Is it safe to upload these files to compress them?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Files are uploaded over an encrypted connection, <strong>processed on our servers, and deleted automatically a few hours later<\/strong> \u2014 there\u2019s no account required and no watermark added. If a file is highly sensitive or you may need the original archival quality later, keep your own copy and compress a duplicate.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Last verified 2026-07-16.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.loc.gov\/preservation\/digital\/formats\/fdd\/fdd000022.shtml\">Library of Congress \u2014 TIFF, Revision 6.0<\/a> \u2014 TIFF as a tag-based wrapper for raster image bitstreams, commonly stored uncompressed or with lossless LZW, used for high-quality and archival images.<\/li><li><a href=\"https:\/\/www.loc.gov\/preservation\/digital\/formats\/fdd\/fdd000189.shtml\">Library of Congress \u2014 Bitmap Image File (BMP), Version 5<\/a> \u2014 BMP as a raster bitmap format; most BMP files have historically been stored uncompressed.<\/li><li><a href=\"https:\/\/www.loc.gov\/preservation\/digital\/formats\/fdd\/fdd000001.shtml\">Library of Congress \u2014 WAVE Audio File Format<\/a> \u2014 WAVE as an audio wrapper whose common bitstream encoding is uncompressed LPCM.<\/li><li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Media\/Guides\/Formats\/Image_types\">MDN \u2014 Image file type and format guide<\/a> \u2014 \u201cMost TIFF files are uncompressed\u201d; BMP \u201cuncompressed raster image, resulting in large file sizes\u201d; GIF 8-bit indexed color (\u2264256) with LZW; PNG lossless and better than lossy formats only for non-photographic images.<\/li><li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Media\/Guides\/Formats\/Containers\">MDN \u2014 Media container formats<\/a> \u2014 WAV \u201ccontains uncompressed PCM audio, delivering the highest fidelity at the cost of larger file sizes.\u201d<\/li><li><a href=\"https:\/\/www.w3.org\/TR\/png-3\/\">W3C \u2014 PNG Specification (Third Edition, 2025)<\/a> \u2014 PNG defined as a format for \u201clossless, portable, well-compressed storage\u201d of raster images, with losslessness as an explicit design goal.<\/li><li><a href=\"https:\/\/www.xconvert.com\/blog\/why-is-my-scanned-pdf-so-big\">xconvert \u2014 Why is my scanned PDF so big?<\/a> and <a href=\"https:\/\/www.xconvert.com\/blog\/gif-vs-mp4-file-size\">GIF vs MP4 file size<\/a> \u2014 deeper breakdowns of scanned-PDF bloat and the GIF-to-MP4 size win.<\/li><li>xconvert production data (30-day sample) \u2014 median size reductions per format (internal measurement); the load-bearing percentages throughout this article.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Ranked by our production data: the file types wasting the most storage \u2014 TIFF, PNG, scanned PDFs, WAV and more \u2014 plus the one-click fix for 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