Original preview
The original preview appears after you upload a file.
Blank GIF Generator
Set the options for Blank GIF Generator and generate the animation locally in your browser; no source file is required.
Generation settings
No upload neededSet the options and generate the GIF in this browser.
Use a transparent background
Processed result
Waiting for a fileOutput preview
The output preview appears after processing finishes.
- Original size
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- Output size
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- Output dimensions
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- Output frames
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- Output duration
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- Processing details
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Choose a file to begin.
How to check the result
Compare the source and output previews, then check dimensions, frame count, duration, and file size to confirm that the chosen settings took effect.
The preview is a quick check. Treat the downloaded file, re-parsed for structure and timing, as the final result.
Learn more
Method and calculation
The generator creates the requested canvas or frame locally, applies the selected colors and timing, and encodes the result as a GIF.
Boundaries and limitations
Large files or animations with many frames need more memory and may take longer. Check the downloaded GIF in a second player before sharing it.
Privacy and local processing
The GIF is read, decoded, processed, previewed, and encoded in this browser. Nothing is uploaded, no third-party runtime API is called, and the input is not saved.
Format and standards
GIF parsing and output follow the GIF89a format description. Very short delays, loops, and color quantization can look different across browsers and players.
Frequently asked questions
Do I need a source file?
No. Blank GIF Generator creates the canvas and GIF directly from the settings, so no source image is required.
How do dimensions, transparency, and GIF version affect the output?
Larger dimensions create a larger pixel canvas. Transparent output requires GIF89a; opaque output can use GIF87a when the selected settings are compatible.
Is the generated GIF created locally?
Yes. The canvas and GIF are generated in this browser, and no input or output file is uploaded or stored by the tool.