Reduce Image Size to 100KB

It re-saves each photo so the file is no larger than 100,000 bytes, which passes whether a form counts a kilobyte as 1,000 or 1,024 bytes. For JPG and WebP it first tries your Maximum Quality setting, then searches for the highest quality that still fits. If even a low quality is too big, it scales the width and height down step by step until the file fits. The list then shows the final size and pixel dimensions of every image.

Photographers frequently run into strict file size limits. Many web forms, grant applications, photography contests and official document portals refuse uploads over a set threshold, often around 100 kilobytes. Small files also load quickly on a portfolio site and use little data for visitors on phones. Getting an image under the limit before you submit avoids rejected uploads and last-minute re-exports.

Crop to the final composition first, since every pixel you remove leaves more of the 100 KB budget for the rest. Then choose JPG or WebP rather than PNG, because their lossy compression keeps far more resolution at this size. Leave Maximum Quality high: the tool only lowers quality as far as it must. If the result still looks soft, the photo had to be scaled down to fit, and a simpler image with less fine texture will keep more detail.

Use it when a form has a rigid 100 kilobyte maximum and you do not want to guess at export settings. An export dialog makes you pick a quality or a size and hope the file lands under the limit. This tool checks the actual saved file and keeps adjusting until it is at or under 100,000 bytes. It is handy for profile pictures, email attachments and contest entries where a new export preset is not worth the time.

A typical web export favors detail for large and high-density screens, so it is usually several times bigger than 100 KB. Fitting a photo into 100 KB means a lower compression quality, smaller pixel dimensions, or both, depending on how detailed the image is. Fine texture in shadows, foliage or noise and smooth color gradients are the first to show compression artifacts. A 100 KB file is for meeting upload limits, not for critical viewing or print.

Check the size and dimensions shown next to the file when it finishes. Large, detailed photos often have to be scaled down to fit in 100 KB, and a small image viewed large looks soft or blocky. Try JPG or WebP instead of PNG, raise Maximum Quality if you lowered it, and crop away anything the form does not need. Busy or noisy images compress poorly, so reducing noise in your editor before you export can noticeably help.

The new file carries no metadata. The tool redraws your image and saves fresh pixels, so EXIF camera settings, GPS location, copyright fields and any embedded color profile are not copied across. That keeps every byte of the 100 KB budget for the picture itself. Your original file is never changed. If you need your name on a submitted image, add a visible credit or watermark before compressing rather than relying on embedded fields.

Yes, it handles several images at once. Click the upload area or drop in a group of files, pick the format, and press Convert Images. Each photo is fitted under 100 KB on its own terms, so a simple frame keeps more resolution than a busy one, and each downloads as a separate file named with _100kb added. For full client galleries at normal quality, your editing software's batch export remains the better route.

The tool's rule is never to go over the limit. It tests a series of quality levels and keeps the best one that fits, and the next step up would have been over 100,000 bytes, so the result usually lands a little under. The size shown is in kibibytes, so a file at the limit reads as about 97.7 KB. If a file cannot be brought under the limit at all, it is marked Error rather than saved too large.

It opens the images your browser can display, such as JPG, PNG and WebP, and saves to whichever of those three you pick under Target Format. JPG and WebP reach 100 KB with the most resolution intact; PNG is lossless, so the tool can only make it smaller by reducing its dimensions. Browsers cannot open TIFF or camera RAW files, so export those to JPG first. Transparent areas turn white when you save as JPG.