Free Online Image Compressor to Specific KB (JPG, PNG, WebP)
Welcome to the Smart Image Compressor & Resizer by Rudraveer Enterprises — an advanced browser-based photo optimization utility tailored for job applicants, students, web designers, and cyber cafe operators. Easily compress your photos and signatures to an exact target file size (e.g. 20 KB, 50 KB, 100 KB, or 200 KB) required by government online application portals without suffering unsightly pixelation or blurriness.
Key Features & Capabilities
Exact KB Targeting
Enter any custom target size in kilobytes (KB). Our dual-pass binary search algorithm calculates the optimal compression ratio to reach your exact size.
Integrated Photo Cropper
Fine-tune passport borders, signatures, or certificates with free-form or aspect-ratio locked cropping (Cropper.js engine) right inside the workspace.
Brightness & Contrast Filters
Enhance dim smartphone shots, brighten signature backgrounds to pure white, and sharpen text lines with instant real-time live preview.
200/300 DPI Header Injection
Automatically preserves and injects standard 200 DPI/300 DPI metadata tags into JPEG files to satisfy stringent portal verification checkers.
How to Compress an Image to Target KB
- Upload Photo: Click the drag-and-drop zone, paste from clipboard (Ctrl+V), or select an image from your phone or PC (supports JPG, PNG, WebP up to 20MB).
- Crop & Adjust (Optional): Click "Edit / Crop Photo" to rotate, crop the exact passport area, or adjust brightness/contrast to remove background haze.
- Set Your Target Size: Click one of our quick presets (20 KB for signatures, 50 KB for passport photos, 100 KB or 200 KB for certificates), or type your custom target KB number.
- Compress & Download: Click "Compress to Target KB". View the side-by-side file size comparison, then hit "Download Compressed Image" instantly.
Common Portal Requirements in India
- UPSC / SSC / State PSC: Passport photos typically required between 20 KB – 50 KB, Signatures between 10 KB – 20 KB in JPEG format.
- IBPS / Banking Exams: Left thumb impression and handwritten declaration required between 20 KB – 50 KB.
- NTA (NEET / JEE): Postcard photos and candidate photos must adhere to strict pixel and KB ranges with clear white backgrounds.
Frequently Asked Questions (FAQ)
Will my compressed photo lose quality or look blurry?
No. Our compressor uses advanced multi-step bicubic scaling and adaptive mathematical quality quantization. It preserves edge sharpness and facial features while eliminating redundant metadata and invisible color artifacts.
Is my uploaded photo uploaded to any server or database?
Never. The entire compression process takes place purely inside your browser using HTML5 Canvas APIs. Your photos remain on your local computer or smartphone at all times.
Can I convert PNG images into smaller JPG files?
Yes. When you compress a heavy transparent or opaque PNG, our tool converts it to a standard, lightweight JPEG with solid white background, shrinking file size by up to 90%.
Can I compress multiple photos on mobile?
Yes. The responsive mobile interface works smoothly on any Android or iOS browser without requiring any mobile app download.