Compress any image to exactly 100KB or less — automatically. Smart binary-search quality loop finds the highest quality that hits the target. Supports JPEG, PNG and WebP. Shows before/after size, quality used, and dimension info. No upload, 100% private.
Drag and drop a JPEG, PNG or WebP image onto the drop zone, or click to browse. The original file size and dimensions are shown immediately. Works with images of any starting size — from 200 KB to 20 MB.
The tool runs a smart binary-search algorithm across JPEG quality levels (1–100) to find the highest quality setting that keeps the file at or under 100KB. No manual sliders — just upload and get the result in under 3 seconds.
The before/after panel shows original size, compressed size, bytes saved, percentage reduction, and the quality level used. Preview the compressed image, then click Download to save. You can also change the output format (JPEG/WebP) for even smaller results.
100KB has become the de-facto standard file size limit for online form attachments — particularly for government portals, university application systems, job boards, visa applications, and HR onboarding platforms. The limit exists because: form databases store uploaded files and 100KB keeps storage manageable at scale; file-size caps prevent abuse and denial-of-service via large uploads; and web forms are often accessed on mobile networks where download and re-upload of large files is impractical. Common use cases include passport photos, ID photographs, signature scans, CV photos, and profile pictures.
Very small images (already under 100KB) are passed through unchanged. For large images, the tool compresses to the minimum quality level (1%) which achieves very aggressive compression. If even that is above 100KB, the tool will also downsample the image dimensions — reducing width and height — until the target is met. The result may have visible quality loss, but it will meet the size requirement.
In most cases, no. The tool first tries to achieve 100KB by reducing JPEG quality alone while keeping the original dimensions. Dimension reduction is only applied as a last resort for images where quality-only compression cannot reach 100KB. The result panel always shows the final output dimensions so you know exactly what you are downloading.
JPEG is the best choice for photographs and images with gradients — it compresses efficiently with minimal visible loss. WebP achieves 25–35% better compression than JPEG at the same perceived quality, but is not accepted by every form system (some expect only JPEG). PNG lossless compression is poor for size targets — PNGs are automatically converted to JPEG internally to hit 100KB. Choose JPEG for maximum compatibility and WebP for maximum compression.
The tool processes one image at a time for full preview and quality control. After downloading, simply drag the next image onto the drop zone. For bulk compression of many images (such as processing an entire folder of photos), a local tool like Squoosh or a CLI tool is more efficient.
Yes — all processing happens entirely inside your browser using the HTML5 Canvas API and JavaScript. Your image is never transmitted to any server, never stored, and never logged. You can verify this by disconnecting from the internet after the page loads — the tool will continue to work perfectly offline. This makes it suitable for compressing ID photographs, sensitive business documents, and personal images.
