GIF Resizer

The GIF Resizer px tool provides a server-side process to resize animated GIFs. It accepts a source GIF and target dimensions; the user may set either width or height or both, with an option to preserve aspect ratio. The tool scales each frame, preserving transparency, color indexing, and per-frame delays, and then re-encodes into a new GIF. The result is a resized animated asset suitable for web, social, and apps.
The workflow conceptually follows per-frame resizing, color palette adjustment, and timing preservation. It computes target dimensions, applies a resampling method, and re-quantizes colors to GIF limits while keeping the original animation timing and looping behavior. It also provides a final width, height, frame count, and an estimated size to aid planning before download.
Content teams, marketers, and developers benefit from reliable, consistent GIF sizes without desktop software. The key differentiator is per-frame accuracy with preserved frame delays and a practical size estimate, enabling fast iteration for banners, social posts, and product demos. Typical use cases include campaign assets, micro-videos, and tutorials where predictable dimensions and timing are essential.
Core features include input validation, error handling for invalid GIFs, optional resampling methods, and size estimation. Advanced options may include dithering control and color quantization hints. The workflow supports quick validation of size targets and predictable outputs for downstream publishing systems.