Private

Photo Resizer & Target KB Optimizer

Crop portraits, get your photo under 20KB, 50KB or 100KB, and format signatures directly on your device.

Select or Drop Your Photo

Drag and drop any headshot portrait, passport photo, or paper signature to get started.

Supports JPG, PNG, WebP, AVIF and HEIC•Large phone photos automatically scaled

Or test instantly with a demo file

Check the size and format rules on the form you are filling. They can differ and change.

How Photo Resizing Works

Online application forms, exam portals, and registration systems often impose strict limits on photo file sizes (such as requiring images under 50 KB or signatures under 20 KB) alongside specific aspect ratios or physical print dimensions.

Adaptive Quality Search

Rather than guessing compression values, the engine tests multiple quality levels to find the highest possible clarity that stays within your selected KB threshold.

Resolution Downscaling Fallback

If an image remains over your target size at minimum quality, dimensions are incrementally scaled down until the file size threshold is satisfied.

Signature Paper Whitening

Signature mode removes grey shadows and yellowish paper hues by mapping bright background pixels to pure white, while darkening ink for clear legibility.

Complete Privacy

Your private identification photos and signatures never leave your device. All temporary files are cleared automatically.

Tip: When forms specify physical measurements (like 3.5 cm × 4.5 cm), enable Custom Dimensions with 300 DPI for high print clarity.

Help & Answers

Frequently Asked Questions

Clear answers to common questions about resizing, file sizes, and device privacy.

The tool uses an automated search algorithm in your browser's Canvas engine. It iteratively adjusts JPEG or WebP compression quality to find the sharpest result below your target KB. If the file is still larger than your target at minimal compression quality, it automatically scales down image dimensions until it meets your desired file size.