Tag 11 posts

jpeg

Everything filed under jpeg.

All posts 100kb 1mb 5mb bom compress image compression crop dpi email attachment exif experiment extract file size gps heic image compression image compressor image conversion image converter image resizer image size images instagram iphone job application jpeg jpg json json.parse ocr passport photo pdf pdftotext photo quality png png to jpg print privacy redaction resize scan screenshot screenshots signature us passport utf-8 visa photo webp windows

1 September 2026 images Does Cropping Shrink a Photo? A 16px trim grew 7 of 7 JPEGs at q95 (median 1.5036x). Cropping is a re-encode; the scissors do not set the bytes. Read

29 August 2026 webp Does converting a JPG to WebP shrink the file? On 7 photos, lossy WebP q80 was a median 44.3% of the JPG. Lossless WebP was 414.6%. One toggle, opposite outcomes. Read

28 August 2026 exif Does removing EXIF shrink a photo? A real iPhone photo had 9,975 bytes of EXIF including GPS. A lossless strip saved exactly that. A canvas re-save at quality 95 grew 24%. Read

26 August 2026 images If I resize a photo to 50%, is the file half the size? 50% of each side is 25% of the pixels. 17 photos landed at a median 25.4% of original bytes, not 50%. Read

25 August 2026 png Should you convert a screenshot to JPEG? A photo as PNG was 2,285,876 bytes; JPEG quality 85 made 320,385. A spreadsheet UI screenshot went from 68,660 PNG to 117,944 JPEG. Convert photos, not flat UI. Read

23 August 2026 dpi Does 300 DPI make a bigger file than 72 DPI? Same 1200×1800 JPEG at 72 DPI and 300 DPI: both 103,977 bytes. A 4×6 at 300 DPI is 17× the pixels of 72 DPI. DPI is a print label, not a file-size knob. Read

22 August 2026 passport photo Your US passport photo does not have to be 600 pixels A 4032×2678 phone JPEG was 1,182,975 bytes and already passed online renewal. Resizing it to 600×600 made a 40,007-byte file under the 54 KB floor. 600×600 is the visa spec. Read

20 August 2026 compress image I compressed 9 images to 100 KB. Here's what survived. A 1,609,228-byte food photo shrank to 1749×1749 at JPEG quality 20 to hit 99,927 bytes. Seven photos all landed at quality 20–25. 100 KB is 102,400 bytes. Read

19 August 2026 png Why is my PNG so large? A 2400×1600 photo saved as PNG was 3,412,334 bytes. Same pixels as JPEG quality 80: 458,627. PNG is lossless. Photos pay for that. Read

17 August 2026 images I compressed 20 real files at JPEG quality 80. Here's what actually shrank. 20 real files, JPEG quality 80, bytes measured from disk. Median save 15.5%. One small web JPEG got bigger. PNG screenshots were the outliers. Read

17 August 2026 instagram Why does Instagram make my photo look blurry? Instagram downscales feed photos to 1080px wide, then JPEG-compresses them. iPhone P3 color gets flattened to sRGB. Here's the two-minute fix. Read