Image Compressor
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MAX 50MB • GIF, PNG, JPG, WEBP, MP4, WEBM
About the Image Compressor
The Image Compressor reduces the file size of PNG, JPG, and WEBP images by re-encoding at a lower quality and stripping unnecessary metadata. It is designed for web publishing where smaller images mean faster page loads and better Core Web Vitals.
How the Image Compressor works
- 1
GifLab decodes the source image into a bitmap, discarding any embedded metadata (EXIF, ICC profiles, comments) by default.
- 2
The bitmap is drawn onto a canvas at full resolution.
- 3
The canvas is re-encoded to the original format at your chosen quality level, which controls how aggressively the lossy compression runs.
- 4
The result is returned as a smaller Blob with the same dimensions.
Common use cases
- →Shrinking hero images so a web page loads faster on mobile networks.
- →Reducing email attachment sizes below an inbox limit.
- →Preparing a batch of photos for upload to a CMS that has a file size cap.
Tips for the best results
Start at quality 80 and step down only if the result is still too large — most photos look fine at 70–80.
For graphics with flat colours (logos, charts), PNG often compresses better than JPG. For photos, JPG is usually smaller.
WEBP at the same visual quality is typically 25–35% smaller than JPG, so consider converting during compression.
Image Compressor FAQ
Will compression visibly reduce image quality?
At quality 80 and above, most photos show no visible artefacts. Below 70, banding and blockiness can appear, especially in smooth gradients and skies.
Does it preserve metadata like EXIF?
By default, metadata is stripped to reduce file size. If you need EXIF data preserved, keep an unprocessed copy of the original.
Can compression make a PNG smaller?
Re-encoding a PNG at a lower quality reduces its size, but PNG is lossless by design — for big savings on photos, converting to JPG or WEBP during compression is more effective.
