Free Image, Video & PDF Compressor Online

PNG files can be surprisingly large because they store full 24-bit color data in a lossless format. Our compressor reduces PNG file size by optimizing the color palette — most graphics, logos, and screenshots look identical with 256 colors instead of millions.

1. 1Upload your PNG file (drag and drop, click, or paste from clipboard)
2. 2Set the quality slider — 80% works great for most PNG graphics and screenshots
3. 3Choose to keep PNG format or convert to WebP for even smaller files
4. 4Click Compress and download your optimized PNG

Typical results: A 500KB PNG icon compresses to ~75KB at 256 colors (85% reduction). Screenshots typically shrink 60–70%. For photos saved as PNG, consider converting to WebP or JPEG for much better compression ratios.

JPEG compression works by reducing the detail in areas of an image that the human eye is less sensitive to. The quality slider controls this trade-off: higher values preserve more detail but produce larger files.

1. 1Upload your JPG/JPEG image or drag and drop multiple files
2. 2Adjust the quality slider — 80% is ideal for web, 60% for thumbnails, 90% for print
3. 3Optionally strip EXIF metadata to remove camera info and GPS data
4. 4Click Compress and download your optimized JPEG

Recommended quality settings: 90% for high-quality photography and print. 80% for general web use — virtually indistinguishable from the original. 60% for thumbnails and social media previews. Below 50%, artifacts become noticeable on most images.

Video files are large because they store thousands of frames at high bitrates. Our MP4 compressor uses FFmpeg (running in your browser via WebAssembly) to re-encode videos with optimized bitrate settings, reducing file size while preserving visual quality.

1. 1Upload your MP4 video file (up to 500MB)
2. 2Select a quality preset: High (best quality), Medium (balanced), or Low (smallest file)
3. 3Optionally change the resolution (e.g., 1080p to 720p) for additional size savings
4. 4Choose an output format — keep MP4 for compatibility, or convert to WebM for smaller web files
5. 5Click Compress and wait for processing (video encoding takes longer than images)

Typical results: A 100MB 1080p video compresses to ~30MB on the Medium preset with minimal quality loss. Reducing resolution to 720p can cut that further to ~15MB. The video engine loads once (~31MB) and is cached in your browser for faster subsequent compressions.

Discord enforces strict upload limits: 10MB for free users, 25MB for Nitro Basic, and 50MB for Nitro subscribers. Our compressor helps you shrink videos to fit these limits while keeping them watchable.

1. 1Upload your video file to the compressor
2. 2For free Discord (10MB limit): select Low quality preset and 720p or 480p resolution
3. 3For Nitro Basic (25MB limit): select Medium quality preset, keep original resolution
4. 4For Nitro (50MB limit): select High quality preset for best quality under 50MB
5. 5Click Compress, verify the output size, and download for Discord

Tips for Discord: Short clips (under 30 seconds) at 720p usually fit under 10MB with the Medium preset. For longer videos, reduce resolution to 480p or use the Low preset. MP4 with H.264 is the most compatible format for Discord on all devices. Muting audio also reduces file size if the sound isn't important.

PDF files can be very large, especially when they contain high-resolution images, scanned pages, or embedded graphics. Our compressor renders each page at your chosen DPI and quality, then reassembles them into a smaller PDF.

1. 1Upload your PDF file (drag and drop or click to browse — up to 500MB)
2. 2Adjust the quality slider — 80% is ideal for most documents
3. 3Choose a DPI setting — 150 DPI balances size and readability, 72 DPI for maximum compression
4. 4Optionally enable grayscale to further reduce file size for text-heavy documents
5. 5Click Compress and download your optimized PDF

Typical results: A 10MB PDF with images compresses to ~2MB at 80% quality and 150 DPI. Scanned documents (which are essentially images) see the biggest savings — often 60–80% reduction. For text-heavy PDFs with few images, enabling grayscale can provide an additional 20–30% reduction.