Where does GIF Cropper Online process the file?
With GIF Cropper Online, the default path reads the selected file in this browser. It is uploaded only if you explicitly choose the secure worker fallback.
GIF & Video · Browser-first processing
Crop an Animated GIF
Crop a rectangular region from every frame of an animated GIF. The default path runs in this browser. If this browser cannot decode the media or the file exceeds the local limit, you can explicitly choose the secure worker fallback.
- Decode input framesthis device
- Transform or encode the resultthis device
GIF Cropper OnlineProcessed on this device
or drop files here
Selected files stay in this browser tab.
Preview and result
Local browser processingSelect a supported file or enter the requested values, then run the tool.
This browser path does not upload the selected source to ImgNimble. Closing or refreshing clears the selected files and generated result from the page.
Use secure worker fallback instead
Use this only when the browser cannot decode/encode the file or the local operation is too large. Choosing this fallback uploads the selected file to the configured secure worker and consumes 1 anonymous/member credit(s).
Common questions
How this tool behaves
How long does GIF Cropper Online retain its worker result?
The GIF Cropper Online worker result is temporary and is deleted by the retention cleanup schedule, normally within 24 hours.
Why does GIF Cropper Online enforce input limits?
For GIF Cropper Online, animation and video processing is CPU intensive. Local caps protect mobile stability; larger or unsupported files can use the consent-based worker fallback.
What inputs work best with GIF Cropper?
GIF Cropper validates the selected file before processing. Use GIF within the 35 MB per-file limit. Keep an untouched original for comparison.
How is a GIF Cropper worker result protected?
For GIF Cropper Online, the local path creates the output in browser memory. If you choose worker fallback, the upload uses HTTPS and the result is returned through an expiring signed download.
Practical checks
Before you use the output
Verify the result
Keep the original, inspect the generated output and confirm the current destination requirements before replacing or submitting a file.