Image quality
A format conversion cannot recreate detail that was already lost in a source file. Compression, resizing and GIF creation can reduce visual information. Always review output at the size and destination where it will actually be used.
File-size estimates
Generated file size depends on image content, dimensions, format and browser encoding. A target-size tool aims for a practical result but may not produce an exact byte-for-byte target for every image.
Third-party platforms
Social networks, websites and upload portals can change their preferred image specifications. We provide commonly used dimensions for convenience, but users should verify current requirements for mission-critical uploads.
External services
If analytics, advertising or other third-party services are enabled, those providers operate under their own terms and privacy policies.