Original preview
The original preview appears after you upload a file.
Low-Quality GIF Effect
Upload a GIF, then use pixel blocks, color reduction, noise, and frame sampling to give it a deliberately low-quality retro look in your browser.
File and settings
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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 low-quality effect
Compare the source and output previews. Check the pixel blocks, color count, noise, frame count, duration and file size to make sure the intended effect is there.
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
Each frame is averaged within pixel blocks, given optional seeded noise, and quantized to fewer colors. You can also keep every Nth frame and merge its delay.
Boundaries and limitations
This tool intentionally removes detail; it is not a lossless optimizer. Noise and block processing can make motion look more flickery, and large files may need more memory.
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.
Low-quality GIF effect questions
What does this low-quality GIF effect change?
It can average pixels into blocks, reduce the target color count, add seeded noise and optionally keep fewer frames. The result is a deliberate visual effect, not lossless compression.
How do I make a pixelated or retro GIF?
Increase Pixel block size, lower Target colors, and add a little Noise. Use the frame sampling choices only when you also want fewer frames.
Will the effect always make the file smaller?
No. Fewer colors or frames may reduce the file, but noise can add data and large settings can increase it. Check the downloaded GIF's size and timing.