100KB Extension v1.1.1: Compress & resize files in 0ms directly in Google Chrome
Reduce image file size in KB or MB online. Compress JPG, PNG, and WebP files securely without changing dimensions. Formatted for eBay Product Photo.
To ensure your photo is accepted by the Global official platform, it must meet the following strict criteria:
Disclaimer: These requirements are verified based on official guidelines. However, platform rules and guidelines can change. Always consult the official eBay Product Photo portal before final submission.
Applying online can be frustrating due to strict file requirements. Our platform is explicitly designed to help you prepare your files perfectly for eBay Product Photo. The official limit is 12288 KB with exact dimensions of 1600x1600 px. Government job portals, university application systems, and e-commerce platforms impose strict file size limits on uploaded photos—most commonly requiring candidate photographs to be under 20KB, 50KB, or 100KB. Attempting to compress high-resolution smartphone photos (which are usually 3MB to 8MB) using basic tools often causes heavy pixelation, making faces unrecognizable.
100kb.in uses an iterative client-side binary search quantization engine. It converts RGB pixels to YCbCr color space, applies 4:2:0 chroma subsampling, and executes a 7-iteration binary search loop inside browser memory. In under 15 milliseconds, it selects the maximum quality setting that yields a byte size strictly under your requested target limit (e.g. 50KB or 20KB) while maintaining 300 DPI facial clarity.
| Format | Quantization Engine | Color Space & Subsampling | Target Size Ceiling | Portal Acceptance |
|---|---|---|---|---|
| JPEG / JPG | Lossy 8x8 DCT Frequency Quantization | YCbCr (4:2:0 Subsampling) | 20KB – 500KB | 100% (Universal Exam & Visa Portals) |
| PNG | Lossless Deflate / LZ77 Filtering | RGB + 8-bit Alpha Channel | 100KB – 2MB | E-commerce, Logos & Digital Design |
| WEBP | VP8 Intra-frame Prediction | YCbCr 4:2:0 / Lossless | 15KB – 300KB | Modern Web Apps & Mobile Display |
Follow these simple steps to ensure your file meets all requirements for eBay Product Photo.
Select or drag your JPG, PNG, or WEBP photo into the compression dropzone.
Choose a preset size limit (e.g. 20KB, 50KB, 100KB) or type a custom byte ceiling. The official limit is 12288 KB with exact dimensions of 1600x1600 px.
The browser-based solver optimizes JPEG quantization matrices in milliseconds. Grab your optimized file. It is now 100% compliant and ready for upload to eBay Product Photo.
Answers to common questions regarding requirements for eBay Product Photo.
Lead WebAssembly Systems Engineer at 100KB Tools. Technical specifications researched and cross-verified against official ICAO Doc 9303 Part 9 standards, ISO/IEC 10918-1 JPEG specifications, and PDF/A ISO 19005 guidelines.
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