File preparation

Prepare image files for sharing and upload

Keep the original, then choose the smallest operation that satisfies the destination: resize for dimensions, compress for file size, convert for compatibility, and inspect metadata on the final sharing copy.

Compress an image
Decision path

Change only what the destination requires

Dimensions, encoded file size, format, visible appearance, layout, and embedded metadata are separate constraints. Check the requirement before processing a copy.

  1. 01
    Preserve the source

    Work on a copy so later compression, conversion, or metadata removal never replaces the original.

  2. 02
    Match required dimensions

    Resize first when the destination specifies a pixel width, height, or aspect ratio.

  3. 03
    Reduce encoded size

    Compress after dimensions are correct. Treat 100KB, 500KB, and 1MB as approximate targets, not guarantees.

  4. 04
    Convert only for compatibility

    Change format when the destination requires it, and check transparency before choosing JPEG.

  5. 05
    Inspect the sharing copy

    Review the final appearance, size, format, and metadata before sending or uploading it.

Keep the tradeoffs visible

File preparation does not restore missing detail

Compression: JPEG and WebP are lossy, and a complex image may remain above an approximate target.

Conversion: JPEG cannot retain transparent pixels; use PNG or WebP when transparency is required.

Resizing: Enlarging pixel dimensions does not recreate detail that the source never captured.

Metadata: Keep metadata on an archival original and remove it only from a separate sharing copy.