PDF to GIF's Ghostscript command writes PNG files using the pattern Page-%d.png, not GIF files.
The sharp library's own API documentation confirms its gif() method sets the output format to GIF for the current image pipeline. sharp API - Output options
PDF to GIFHow Does PDF to GIF Conversion Actually Work
For each rendered PNG file, PDF to GIF opens it with sharp and calls the gif() encoder to produce the matching GIF file.
Upload the PDF file to the PDF to GIF interface.
Wait for the system to process the document.
Checking the PNG Intermediate Step
Review the generated PNG files to verify the rasterization quality.
Compare the PNG dimensions against the original PDF page size.
PDF to GIF sorts the rendered PNG filenames numerically by page number before encoding them, so page 10 is processed after page 2 rather than before it.
Troubleshooting the GIF Encoding Phase
Download the final GIF to inspect it in an image viewer.
Open the GIF in a web browser to check for visual artifacts.
Continue with 256 Color Limit or Select Specific Pages.
Frequently Asked Questions about How PDF to GIF Conversion Works
How do I start the conversion process?
Upload the PDF file using the link below.
Where do I find the final output?
Download the finished PDF from the results screen.
How do I verify the page order?
Review the uploaded pages for the correct sequence.
Where do I check the file size?
Review the GIF file size before downloading.
Why does a page number appear in the failed conversion log?
Match the failing page number against the PNG stage to isolate which page caused the error.