[{"data":1,"prerenderedAt":322},["ShallowReactive",2],{"\u002Fdocs\u002Fbatch-convert-jpg-to-webp-check-file-sizes":3,"\u002Fdocs\u002Fbatch-convert-jpg-to-webp-check-file-sizes-adjacent":313},{"id":4,"title":5,"body":6,"category":302,"description":303,"extension":304,"eyebrow":305,"meta":306,"navigation":307,"path":308,"published":309,"seo":310,"stem":311,"__hash__":312},"docs\u002Fdocs\u002Fbatch-convert-jpg-to-webp-check-file-sizes.md","Batch convert JPG to WebP: check every file’s size",{"type":7,"value":8,"toc":293},"minimark",[9,13,22,27,51,95,101,105,108,180,187,190,196,202,206,209,217,224,232,236,243,251,261,265,287,290],[10,11,12],"p",{},"A batch of WebP copies can use fewer bytes overall while one image gets larger. If you are converting JPG assets to reduce the weight of a page or a shared folder, the total saving can hide an unhelpful result. Check each file before replacing its JPEG source.",[10,14,15,16,21],{},"PicBean’s ",[17,18,20],"a",{"href":19},"\u002Fjpg-to-webp\u002F","JPG to WebP converter"," lets you convert several images together and compare their individual results. Use it when your destination accepts WebP, and keep the original JPEGs while you decide which copies to use.",[23,24,26],"h2",{"id":25},"convert-the-batch-at-its-existing-dimensions","Convert the batch at its existing dimensions",[10,28,29,30,34,35,38,39,42,43,46,47,50],{},"Open the converter and confirm the heading ",[31,32,33],"strong",{},"Convert JPG to WebP",". The page starts with ",[31,36,37],{},"Convert"," selected, ",[31,40,41],{},"Output format"," set to ",[31,44,45],{},"WebP",", and ",[31,48,49],{},"Quality: 82",".",[52,53,54,66,73,88],"ol",{},[55,56,57,58,61,62,65],"li",{},"Choose ",[31,59,60],{},"Select images"," and add your JPG or JPEG files together, or drop them into ",[31,63,64],{},"Drop images here",". Processing starts automatically.",[55,67,68,69,72],{},"Under ",[31,70,71],{},"Your images",", wait until the ready count matches the number of images you need.",[55,74,75,76,79,80,83,84,87],{},"Read ",[31,77,78],{},"Original"," and ",[31,81,82],{},"Result"," for every row. Compare file size, check that the result says ",[31,85,86],{},"WEBP",", and confirm its pixel dimensions.",[55,89,90,91,94],{},"Use the row’s ",[31,92,93],{},"Download"," button to save a copy for inspection. Keep it separate from your source folder.",[10,96,97,98,100],{},"The JPG badge beside a filename identifies the input. It remains JPG after conversion; the format inside ",[31,99,82],{}," identifies the output. Convert mode keeps the decoded image’s dimensions, so a small source does not become a larger image simply because you changed its format.",[23,102,104],{"id":103},"two-successful-conversions-with-different-size-results","Two successful conversions with different size results",[10,106,107],{},"In a local Chrome check on October 22, 2026, the default settings produced these downloads from two generated JPEG patterns:",[109,110,111,133],"table",{},[112,113,114],"thead",{},[115,116,117,121,125,127,130],"tr",{},[118,119,120],"th",{},"Input",[118,122,124],{"align":123},"right","Original bytes",[118,126,93],{},[118,128,129],{"align":123},"Download bytes",[118,131,132],{},"Dimensions",[134,135,136,159],"tbody",{},[115,137,138,145,148,153,156],{},[139,140,141],"td",{},[142,143,144],"code",{},"photo-large.jpg",[139,146,147],{"align":123},"4,812,393",[139,149,150],{},[142,151,152],{},"photo-large.webp",[139,154,155],{"align":123},"3,415,186",[139,157,158],{},"3200 × 2400",[115,160,161,166,169,174,177],{},[139,162,163],{},[142,164,165],{},"small.jpg",[139,167,168],{"align":123},"909",[139,170,171],{},[142,172,173],{},"small.webp",[139,175,176],{"align":123},"1,088",[139,178,179],{},"32 × 32",[10,181,182],{},[183,184],"img",{"alt":185,"src":186},"Two completed JPG to WebP results: the 3200 × 2400 image is 29 percent smaller, while the 32 × 32 image is 20 percent larger, with Download ZIP available","\u002Fdocs\u002Fimage\u002F2026\u002Fjpg-to-webp-batch-size-results.webp",[10,188,189],{},"Both downloaded files were decoded and verified as opaque WebP images with their original dimensions. The large result saved 1,397,207 bytes. The small result added 179 bytes. The interface rounds the displayed sizes and percentages; the table uses the actual file byte counts.",[10,191,192,195],{},[31,193,194],{},"Ready"," means a result is available. It does not mean the result is smaller. PicBean makes the size increase visible in the small image’s row, so you can decide whether that copy serves your purpose.",[10,197,198,199,201],{},"These inputs are synthetic patterns, including the file named ",[142,200,144],{},". They verify conversion, size reporting, and downloads; they do not establish photo quality or predict savings for other images. Nor does this pair establish that all small JPEGs grow when converted.",[23,203,205],{"id":204},"decide-which-webp-copies-to-keep","Decide which WebP copies to keep",[10,207,208],{},"If reducing bytes is the only reason for conversion, a larger WebP offers no size benefit. Keep the original JPEG for that asset if the destination accepts it. If a handoff specifically requires WebP, the larger copy may still be useful, provided its appearance and dimensions meet the requirement.",[10,210,211,212,216],{},"Open the downloaded copies at their intended display size and at 100% zoom. Inspect lettering, edges, faces, texture, and gradients where present. The default WebP conversion is lossy: keeping the same pixel dimensions does not preserve every detail, and converting an already compressed JPEG cannot recover missing information. The ",[17,213,215],{"href":214},"\u002Fdocs\u002Fimage-quality-vs-resolution\u002F","image quality versus resolution guide"," explains why those checks are separate.",[10,218,219,220,223],{},"If a result looks too soft, raise ",[31,221,222],{},"Quality"," and wait for the batch to update before downloading again. The setting applies to the retained batch, so review all the new results. Each update uses the original inputs. A higher setting is not a promise of identical detail or a smaller file; the number is not a percentage of quality retained.",[10,225,226,227,231],{},"For a broader decision about keeping JPEG or using WebP, see ",[17,228,230],{"href":229},"\u002Fdocs\u002Fjpeg-vs-webp\u002F","JPEG versus WebP",". Check support in the actual destination rather than assuming that opening a WebP in your browser proves another application will accept it.",[23,233,235],{"id":234},"check-the-zip-before-replacing-a-folder","Check the ZIP before replacing a folder",[10,237,238,239,242],{},"Once the required rows are ready, choose ",[31,240,241],{},"Download ZIP",". Extract the archive into a separate folder and check the file count, names, and images. A batch download includes completed results; resolve failed or canceled rows before treating it as the complete set.",[10,244,245,246,79,248,250],{},"In this run, the ZIP contained ",[142,247,152],{},[142,249,173],{},". Each entry was decoded to verify format, dimensions, and transparency, then compared byte for byte with its individual download. The archive was 3,416,500 bytes, including its packaging data. It contained the larger small-image result as well as the smaller large-image result: downloading a ZIP does not select only files that saved bytes.",[10,252,253,254,257,258,260],{},"Use ",[31,255,256],{},"Download all"," for separate downloads, or a row’s ",[31,259,93],{}," when you only want selected results. Keep the source folder until you have opened and reviewed the copies you plan to use.",[23,262,264],{"id":263},"when-conversion-does-not-meet-the-requirement","When conversion does not meet the requirement",[10,266,267,268,271,272,274,275,277,278,281,282,286],{},"Convert mode does not enforce a maximum file size. The large WebP above is smaller than its source but still exceeds 500,000 bytes. If you need both WebP and a byte cap, switch to ",[31,269,270],{},"Target Size",", explicitly select ",[31,273,45],{}," under ",[31,276,41],{},", and set ",[31,279,280],{},"Maximum size",". Recheck the format when switching modes because each mode has its own settings. Follow the ",[17,283,285],{"href":284},"\u002Fdocs\u002Fhow-to-make-an-image-under-500kb\u002F","target-size guide"," and verify the final downloaded bytes.",[10,288,289],{},"The converter accepts up to 20 images, with a 25 MB per-file limit and a 100 MB total input limit. Damaged files, unsupported formats, or images beyond the decoded-size limits can fail. Renaming an extension does not convert or repair an image.",[10,291,292],{},"Processing and ZIP creation run in the browser. The illustrated run passed network checks rejecting external requests and upload bodies during the workflow. Save the useful results before clearing the batch, and retain the originals for future edits.",{"title":294,"searchDepth":295,"depth":295,"links":296},"",2,[297,298,299,300,301],{"id":25,"depth":295,"text":26},{"id":103,"depth":295,"text":104},{"id":204,"depth":295,"text":205},{"id":234,"depth":295,"text":235},{"id":263,"depth":295,"text":264},"workflows","Make WebP copies of a JPEG batch, compare each downloaded file with its source, and check the ZIP before keeping images that may be larger.","md","Batch conversion guide",{},true,"\u002Fdocs\u002Fbatch-convert-jpg-to-webp-check-file-sizes","2026-11-02",{"title":5,"description":303},"docs\u002Fbatch-convert-jpg-to-webp-check-file-sizes","tpeynK2iZOfqYyi4lKayNf3r_mQ066UQ_ycmTX21ihk",[314,318],{"title":315,"path":316,"stem":317,"children":-1},"DPI vs pixels: does changing DPI reduce image file size?","\u002Fdocs\u002Fdpi-vs-pixels-and-image-file-size","docs\u002Fdpi-vs-pixels-and-image-file-size",{"title":319,"path":320,"stem":321,"children":-1},"Batch compress images to a per-file size limit","\u002Fdocs\u002Fbatch-compress-images-to-size-limit","docs\u002Fbatch-compress-images-to-size-limit",1793623265327]