SnakTool

Image tools for size, composition and format compatibility

Dimensions, encoded size and file format describe different parts of an image. Choose a tool that changes the part you need without unnecessarily changing the others.

Choose by the task

  • Change bytes with compression; dimensions with resizing; composition with cropping.
  • Choose a format for the destination before converting; JPG cannot retain transparency.
  • Remove hidden metadata separately from filenames and visible image content.

Optimize and edit

Convert still-image formats

Privacy and embedding

Fix the picture before changing its format

Crop changes the visible region, resize changes pixel dimensions, and rotation corrects orientation. Compression adjusts encoding while preserving dimensions by default. For a submission form, first check whether its rule is about bytes, pixels or shape.

Keep transparency in a format that supports it. JPG output needs a solid background; it cannot retain alpha. Repeated lossy saves can degrade text and edges, so keep an original and review the final image at the intended display size.

Compatibility and privacy are separate decisions

HEIC conversion uses a local decoder for supported files; it is not a guarantee that every phone-specific auxiliary feature survives. Standard format converters target still-image output, not a complete animation or professional color-management workflow.

Metadata removal re-encodes the visible image and strips known metadata. It does not remove identifying details visible in the picture. Image to Base64 encodes original validated bytes instead, including any metadata those bytes contain; encoding is not sanitization.

Questions about this topic

Does a larger converted file contain more detail?

Not necessarily. PNG output can be larger than a JPEG source without restoring anything lost in the original JPEG compression. Judge the image itself, not only its byte count.