iformat.io
Use our free JPEG to 400KB compressor to reduce file size without losing quality. Perfect for optimizing JPEG images for web, email, or storage, and download your file instantly on any device.
Compress your images, videos, and documents
Follow our simple 3-step process to compress JPEG images to exactly 400KB without losing quality. No software download required - works directly in your browser.
Click "Choose Files" or drag and drop your JPEG images directly into the upload area. Supports multiple files for batch compression to 400KB.
Drag & Drop JPEG Files
Select "400KB" from the compression dropdown menu. Our smart algorithm automatically optimizes JPEG images to achieve exactly 400KB file size.
Click "Compress All Files" and wait a few seconds. Download your 400KB optimized JPEG files individually or as a ZIP archive.
Discover the perfect scenarios where 400KB JPEG compression delivers optimal results for your specific needs.
Perfect for website thumbnails, blog images, and gallery previews. 400KB JPEG files load 3x faster while maintaining visual quality for web display.
Ideal for email attachments and sharing. 400KB JPEG files stay under most email size limits while preserving image clarity for recipients.
Optimized for Instagram stories, Facebook posts, and Twitter uploads. 400KB compression ensures fast uploads without quality loss on mobile networks.
Essential for mobile app assets and user-generated content. 400KB JPEG files reduce app storage usage while maintaining sharp display quality.
Perfect for PowerPoint presentations, PDF reports, and Word documents. 400KB images keep document file sizes manageable without sacrificing visual impact.
Maximize your Google Drive, Dropbox, or OneDrive space. 400KB compression can reduce storage usage by 60-80% for large JPEG photo collections.
Discover our complete suite of professional file compression tools for all your workflow needs
