Compress Image Online Free

1. Upload one or more images (JPG, PNG, WebP, AVIF, HEIC; up to 50 MB total).
2. Click 'Compress Image' — takes a few seconds per image.
3. Download the compressed images, or grab all as a ZIP.

Universal image compressor — accepts JPG, PNG, WebP, AVIF, HEIC, and more. Automatically applies the best compression for each format, typically reducing size by 40-80%.

Different image formats need different compression strategies. JPG compresses lossy at high quality, PNG optimizes losslessly, WebP combines both, and AVIF uses the latest AV1 codec. This tool detects the format and applies the best compression automatically — no need to pick the right tool for each format.

The compressor detects the image format, decodes the image, and re-encodes it with format-appropriate settings: lossless for PNG, quality-based for JPG/WebP/AVIF/HEIC. Metadata is stripped for maximum savings. Output preserves the original format.

• Optimizing a mixed image library for web delivery.
• Reducing storage for image archives.
• Meeting upload size limits with any image format.
• Optimizing WordPress media library.
• Reducing CDN bandwidth costs.
• Preparing images for email attachments.
• Batch-compressing a design asset collection.

Each format is compressed with its optimal strategy. PNG stays lossless; JPG, WebP, AVIF, and HEIC use quality-based compression. At Medium, most images look identical to the original on screens.

• PNG can't compress as dramatically as JPG (lossless).
• Transparency in PNG is preserved; JPG has no transparency.
• Very small images (under 5 KB) may not benefit.
• Animated GIF/WebP use only the first frame.
• Metadata is stripped by default.

• Output preserves the original format — opens anywhere.
• Works with every browser, viewer, and OS.
• Ideal for web assets, app resources, and archives.
• Standard formats — no special software needed.
• Accepted by every CMS, marketplace, and upload form.

• Medium is the sweet spot — 40-60% smaller with no visible loss.
• PNG files compress less (lossless) but preserve transparency.
• Batch up to 50 MB of images at once.
• For target-size work, use the specific format tools.
• Metadata is stripped — good for privacy, back up originals.

PNG barely smaller after compression

PNG is lossless — savings are typically 20-40%. For more reduction, convert to WebP or JPG.

Output format differs from input

The compressor preserves the original format. If output differs, the source may have had an unusual extension.

Metadata is missing

Metadata is stripped by default for maximum compression. Keep the original if metadata matters.

• W3C — PNG Specification
• Google Developers — WebP