Resize photos for portals and forms
Visa, Emirates ID, school and job portals often reject photos that are too large or the wrong size. Phone cameras produce images of 4,000 pixels or more, which are far bigger than a form needs. Resizing to around 1,000 to 1,600 pixels on the long side usually gives a sharp photo at a fraction of the file size. If a portal asks for exact pixel dimensions, use Exact size and turn off Keep aspect ratio only if the portal accepts a stretched image.
Percentage or exact pixels
Percentage resizing keeps the same shape and is the quickest way to make a whole batch smaller: 50% halves both the width and the height, so the image has a quarter of the pixels. Exact size is better when you need a specific width, for example 1080 pixels for a social post. With Keep aspect ratio on, entering only the width works out the height for you, and entering both makes the image fit inside that box without stretching.
Quality and file formats
PNG images are saved as PNG, so text, logos and transparent areas stay crisp. Other formats, such as JPG, WebP and HEIC, are saved as JPG, which most portals accept. The JPG quality slider trades file size for detail; 85% is a good default for photos. For large reductions the tool shrinks the image in steps, which gives a sharper result than one big jump.
Private by design
Your images are decoded, resized and saved by your own browser. Nothing is uploaded to NeedMyTools and no copy is kept. Very large batches depend on your device's memory, so if a phone struggles, resize fewer images at a time.