Compress Image to Specific KB/MB Online

Accurately reduce your image file size online. Compress photos instantly to 15KB, 35KB, 55KB, 125KB, 1MB or set your own custom target size with zero upload wait times.

Compression Settings

Original Size: -
5 KB Max Compression 1 MB

Free Online Image Compressor to Specific KB and MB

When applying for jobs online, submitting university application forms, or uploading documents to official exam portals (like SSC, UPSC, and state recruitment boards), you are frequently faced with strict file size limits[cite: 20]. A portal might demand that your photo is under 50KB, under 20KB, or between 15KB and 35KB[cite: 20]. Our Free Image Compressor is designed with an accurate, adaptive multi-pass compression algorithm to guarantee your images meet these exact file weight thresholds[cite: 20].

🎯 Exact KB Target Sizing

Pick one-click presets like 15KB, 35KB, 55KB, 75KB, 125KB, or type any custom KB value directly[cite: 20].

🔒 100% In-Browser Privacy

All compression runs locally in your browser using HTML5 Canvas[cite: 20]. Your photos are never sent to external servers[cite: 20].

âš¡ Smart Quality Retention

Our binary search algorithm balances quantization matrices and quality tables to prevent pixelation and blurriness.

How to Compress an Image to a Specific Target Size (Step-by-Step)

  1. Upload your Photo: Drag and drop your JPG, PNG, or WebP image into the secure upload zone[cite: 20]. The original size of your file is immediately measured and displayed on the left[cite: 20].
  2. Set your Target Size: Use the quick-select buttons for common portal sizes like 15KB, 35KB, 55KB, 75KB, 125KB, or 1MB[cite: 20]. Alternatively, drag the slider or manually enter a custom target size in the input box[cite: 20].
  3. Adaptive Binary Compression: When you click compress, our tool runs a multi-pass search[cite: 20]. It dynamically optimizes the JPEG quality and, if necessary for extreme targets, proportionally downscales dimensions to guarantee the file stays under your limit[cite: 20].
  4. Download Instantly: Save the compressed, perfectly formatted JPEG file directly to your desktop, tablet, or smartphone without watermarks[cite: 20].

Frequently Asked Questions (FAQ)

How do I compress an image file to under 20KB or 50KB?

Upload your photo, type '20' or '50' into the Target Size box (or click one of our quick presets), and hit Compress & Download. The algorithm will optimize the image so it fits strictly within that threshold.

Will compressed images lose their sharpness?

Our multi-pass binary algorithm ensures minimal visual degradation by first optimizing compression quality tables before making any necessary dimension adjustments, keeping your pictures clear and legible.

Is it safe to compress personal ID cards and certificates here?

Yes, 100% safe. Because the compression runs entirely inside your device's browser, your files are never transmitted across the internet or stored on our servers.