Compress, convert, and transform images — all directly in your browser. Your files never leave your device.
Reduce JPG, PNG, and WebP file sizes by up to 80% without visible quality loss. Browser-based — files never uploaded.
Convert PDF pages to PNG, JPG, or WebP at up to 600 DPI. Select specific pages, download as ZIP.
Combine multiple images into a PDF. Control page size, orientation, margins, and image fit. Drag to reorder.
Generate harmonious color palettes for design. Extract colors from images, create complementary schemes, copy HEX/RGB/HSL.
Preview your logo on devices, business cards, and brand surfaces. Instant realistic mockups, no design skills needed.
Create QR codes downloadable as PNG or SVG for digital use, print, and marketing materials.
Images typically account for 60–80% of a webpage's total download size. Poorly optimized images are the single biggest cause of slow-loading websites — and page speed directly affects Google search rankings, user experience, and conversion rates. A page that takes more than 3 seconds to load loses approximately 40% of its visitors before they ever see the content.
Image compression is not about reducing quality — it's about removing redundant data that the human eye cannot perceive. Modern compression algorithms (particularly WebP) achieve remarkable file size reductions while maintaining visual fidelity at standard viewing distances and screen resolutions. A 2 MB JPG that should realistically be 150 KB is not a "high quality" image — it's an unoptimized one.
For privacy-sensitive image processing (medical photos, identification documents, proprietary designs), browser-based tools are the only appropriate choice. DocsConverter processes all images in your browser's JavaScript engine using the Canvas API and File API — zero bytes of your images are transmitted to any server.
What is lossless vs lossy image compression?
Lossless compression reduces file size without discarding any image data — the original can be perfectly reconstructed. PNG uses lossless compression. Lossy compression (used by JPG and WebP) discards some image information to achieve smaller sizes. At higher quality settings, the difference is imperceptible to the human eye, but the file can be 5–10x smaller than the lossless version.
What is the best image format for web use in 2025?
WebP is the best choice for most web images in 2025. It achieves 25–35% smaller files than JPG at equivalent visual quality, supports transparency like PNG, and is supported by all modern browsers. For maximum compatibility with older systems, JPG remains a reliable fallback for photographs and PNG for graphics with transparency.
How much can I compress an image without quality loss?
For JPG images, quality settings of 70–85% typically produce files 30–60% smaller than the original with no perceptible quality difference on screen. Below 60% quality, compression artifacts (blockiness, blurriness) become visible. Our Image Compressor defaults to 80% quality, which is optimal for most use cases.
What DPI should I use when converting PDF to images for print?
For print output, use 300 DPI minimum. Professional printers typically require 300 DPI for text documents and 300–600 DPI for high-quality photographs. For screen display and web publishing, 72–150 DPI is sufficient and produces much smaller files.
Can I extract images from a PDF?
Our PDF to Image tool converts entire PDF pages to images — it renders each page at your chosen DPI and exports it as a PNG, JPG, or WebP file. If you need to extract embedded images from within a PDF (without the surrounding page layout), that requires a different type of tool with direct PDF stream access.