Resize Image

Online forms reject a photo for its file size far more often than for its dimensions. Rather than nudging a quality slider and re-checking, open the File size tab and type the limit you have been given.

The tool then searches for the highest JPEG quality that still fits under your target, holding the pixel dimensions steady wherever possible. Only when the target cannot be reached at the lowest usable quality does it also reduce dimensions, so you always keep as much detail as the limit allows. A 5 MB phone photo drops under 100 KB in a couple of seconds.

Gibraltar issues British passports, so the UK rules apply. For an online application the digital photo must be at least 600 pixels wide and 750 pixels tall, and the file must be at least 50 KB and no more than 10 MB. Both bounds matter — an over-compressed photo under 50 KB is rejected just as readily as one over 10 MB, which catches people out when they squeeze a file too hard.

The Gibraltar identity card follows the 35 × 45 mm ICAO format used across Europe: 827 × 1063 pixels at 600 dpi, or 413 × 531 pixels at 300 dpi. The print preset writes the correct print resolution into the file so a photo lab reproduces the true physical size.

• JPG is right for photographs and for virtually every official upload. It has no transparency, so transparent areas are filled with your chosen background colour.
• PNG is lossless and keeps transparency — the choice for logos, screenshots and graphics with text or hard edges, but far heavier for photographs.
• WebP gives noticeably smaller files than JPG at the same visual quality and suits your own website, though some older software and a few forms still refuse it.

Quality between 75 and 85 is generally indistinguishable from the original while cutting file size sharply.

Gibraltar e-Government services and other government portals cap the size of each attached file. Set that ceiling in the File size tab and your document is compliant before you open the form.

Many residents also sell and shop across the frontier on Spanish platforms such as Wallapop and Milanuncios, which re-compress uploads: around 1200 px on the long side looks sharper than a full-resolution photo their servers will shrink anyway. For email, keeping total attachments under about 10 MB clears most corporate mail filters — resize a folder to 1600 px wide and take it as one ZIP.