How to Use Image Resizer
- Step 1: Select or drop your image (JPG, PNG, WEBP) into the upload zone.
- Step 2: Enter your desired width and height in pixels, inches, cm, or mm.
- Step 3: Optionally lock the aspect ratio or enter a target file size in KB or MB.
- Step 4: Click Resize Image and download your output file.
Settings & Controls Explained
One Resizer's Image Resizer provides specialized browser-local controls tailored to its workflow:
- Unit Selection (PX, IN, CM, MM): Choose pixel dimensions for digital displays or physical units with DPI resolution for print requirements.
- Aspect Ratio Lock: Keep width and height proportionally linked to avoid image stretching or distortion.
- Target File Size (KB/MB): Specify a maximum file size ceiling to meet strict portal upload requirements.
- Quality Slider: Fine-tune image compression quality from 1% to 100% when saving as JPG or WEBP.
Supported Formats & Technical Capabilities
| Specification | Technical Capability |
|---|---|
| Accepted Input Formats | JPG, JPEG, PNG, WEBP |
| Output File Formats | JPG, PNG, WEBP |
| Processing Engine | Client-Side HTML5 Canvas 2D API |
| Network Privacy | Local browser processing (0 bytes uploaded) |
Best Practices & Key Recommendations
- For online admission forms and job portals requiring exact file limits, use the Target KB option.
- When resizing for print (ID cards, passport photos), select CM or Inches and set DPI to 300.
- Save photos as JPG or WEBP for smallest file size; use PNG if transparency is needed.
Troubleshooting & Common Issues
- Image appears stretched: Make sure the Aspect Ratio Lock toggle is enabled before adjusting width or height.
- Cannot reach small KB target with PNG: Switch the output format to JPG or WEBP, as PNG is a lossless format with higher base file size.