● Five functional presets, not doorway pages

Compress an Image to an Exact File Size

Choose a real 50KB, 100KB, 200KB, 500KB or 1MB browser preset, estimate the required reduction and process multiple images without uploading them.

Pick the ceiling that matches the destination

Each page opens a working compressor with different dimensions, format and starting quality. These are not title-swapped copies: the 50KB workflow is deliberately aggressive, while the 1MB workflow preserves larger dimensions and more detail.

50KBCompress Images to 50KB for Strict Upload LimitsJPEG · quality 76 · max width 800px 100KBCompress Images to 100KB for Forms and Fast PagesWEBP · quality 80 · max width 1280px 200KBCompress Images to 200KB with a Quality-First Web PresetWEBP · quality 82 · max width 1600px 500KBBalanced general upload presetWEBP · quality 82 · max width 1920px 1MBCompress Images to 1MB for Large, Detailed UploadsWEBP · quality 88 · max width 2560px

Reduction calculator

Enter the original file size and destination ceiling. The calculator shows the minimum percentage reduction required before any encoder overhead or image-specific behavior.

Original size (KB)Target size (KB)

A 2400KB file must shrink by at least 91.7% to reach 200KB.

Why exact size is iterative

File size depends on dimensions, image complexity, transparency, encoder and quality. Kompixa probes more than one setting rather than pretending one quality value guarantees a specific result.

Use a margin

Some services count decimal kilobytes and some count binary kilobytes. When the destination rule is strict, choose a target slightly below its published maximum.

Verify visually

Inspect faces, text, gradients, hair and repeated patterns. A file can meet the byte limit and still be unsuitable for its intended display size.

Evidence and testing tools

Target KB estimatorProbe one representative image before processing a batch.2026 compression reportReview published PNG, JPEG and WebP measurements.Embed this calculatorAdd the reduction calculator to another website.