Frequently Asked Questions

Yes. Every preset and setting is free to use, with no sign-up, no watermark and no limit on the number of photos.

No. FitKB runs in any modern browser on Android, iPhone, Windows, Mac and Linux. You can add it to your home screen from the browser menu if you use it often.

Tap the Download button under the compressed preview. On Android and computers the file goes to your Downloads folder. On iPhone, Safari puts it in the Downloads folder of the Files app; to save it to Photos instead, tap Share and choose Save Image.

Yes. Type any limit from 1 KB to 20,000 KB into the Size limit box on the home page or on any preset page.

FitKB handles one photo at a time so you can check each result before downloading. Your settings stay in place when you choose the next photo.

Forms reject files that are even one byte over the limit, and some count 1 KB as 1024 bytes while others use 1000. FitKB stays at or under the limit × 1000 bytes, which passes both. See KB vs KiB.

FitKB searches for the highest JPEG quality that fits under your limit. It only reduces the pixel dimensions when quality alone cannot get there. The Quality and Dimensions values under the preview show exactly what was used.

JPG by default, because almost every form accepts it. WebP is available in the Format setting for forms that accept it. See JPG vs PNG vs WebP.

In Safari on iPhone and Mac, yes. Other browsers often cannot read HEIC; convert to JPG first, as explained in how to upload HEIC photos.

No. DPI only tells a printer how large to print the photo. File size depends on pixels and compression. See DPI vs pixels.

FitKB produces the correct shape, pixel size and file size, but acceptance also depends on head size, background, lighting and expression, which only the issuing authority judges. Always follow its official guidance.

There are presets for 35 × 45 mm and 2 × 2 inch. For other sizes, choose Exact width × height, crop to fill on the home page and enter the pixels. The passport size guide shows how to convert mm to pixels.

Sign with a dark pen on white paper and photograph it from above in bright, even light. The signature preset fits the whole signature into a white box without cropping. More tips in the signature guide.

No. Photos are processed by your own browser and never sent to a server. You can even disconnect from the internet after the page loads and it still works.

Yes. The new file is created from pixels only, so GPS location, camera details and other EXIF data from the original are not copied.

No. FitKB is an independent tool and is not affiliated with any government, passport office or exam board. See the disclaimer.