Resize Image to Specific KB Size | MiniPx — Free, Fast & Private
Many upload forms require images under a specific file size — 50KB for government exams, 100KB for form uploads, 200KB for profile pictures, 1MB for email attachments. MiniPx lets you target any specific KB limit with precision.
The approach combines compression and dimension reduction. MiniPx shows you the exact file size after processing, so you can adjust settings until you hit your target. Start with Smart preset and 800px width, then adjust up or down.
Quick reference for common targets: For under 50KB, use JPEG + Tiny + 800px. For under 100KB, use JPEG + Smart + 800px. For under 200KB, use JPEG + Smart + 1280px. For under 1MB, use JPEG + Smart + 1920px.
The real-time size display makes it easy to iterate. If your first attempt is 120KB and you need under 100KB, reduce the width one step or switch from Smart to Tiny. Each adjustment shows the new size immediately.
MiniPx processes everything locally in your browser. Your images never leave your device — ideal for compressing identity documents, exam photos, and sensitive uploads to specific size requirements.