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Detailed tool guide

Image Compressor: instructions, examples and limits

Re-encodes raster pixels with a selected JPEG or WebP quality level.

Open Image Compressor
Processing location: your browser

This tool is registered for local processing. Its tool input is handled in the current page; LittleKit’s product analytics do not include the input value.

What it does

Re-encodes raster pixels with a selected JPEG or WebP quality level. Compare output bytes to decide whether the result is useful.

Use the image compressor when the pixels look right but the file is too large for a message, form upload or website.

How to use it

  1. 1

    Choose a photo or other still raster image and inspect its original dimensions and byte count.

  2. 2

    Select a JPEG or WebP quality that matches the purpose, then compare the output size and preview.

  3. 3

    Download the smaller copy only after checking fine text, edges and transparency if those details matter.

Worked example

A 2400 × 1600 photo can be re-encoded at quality 80 to trade some detail for fewer bytes.

The example demonstrates the operation. For file-based tools, results depend on the selected file and options.

How the result is produced

Re-encodes raster pixels with a selected JPEG or WebP quality level. Compare output bytes to decide whether the result is useful.

Important limits

A smaller file is not guaranteed. PNG quality is not adjustable. JPG, PNG, WebP and browser-decodable AVIF inputs (named converters require their stated source format); 25 MB and 24 megapixels maximum. Output is a single still frame; animation, source colour profiles and metadata are not preserved.

Checks before sharing or relying on the result

  • Lossy compression trades detail for bytes; a PNG does not expose a JPEG-style quality slider.
  • Repeated JPEG exports can accumulate generation loss.
  • The tool works locally and does not change the source file.

Choosing the next step

Use Resize when the dimensions are the problem, Compress when the bytes are the problem, and Metadata Remover when the file contains information you do not want to distribute. Format conversion is a separate choice: JPG is usually compact for photos, PNG keeps transparency, and WebP can be a useful modern compromise.

Batch Image StudioResize, compress and convert an image collection in one local pass.Image ResizerResamples pixels to a target width and height.Image Metadata RemoverCreates a fresh PNG from decoded pixels, discarding original EXIF, GPS, comments and other source metadata.

Related practical guides

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