All text and fonts should be fully embedded in the PDFs, meaning the text is not an image and can be extracted;

The text should not be flattened or rasterized;

All text will be extracted as-is from the PDFs;

If Glyphs or fonts have been used that change the look of a character, the character will be extracted. This causes some small-caps (upper-case letters that are reduced in height) fonts to be rendered as lower-case. Ensure that the characters used are upper-case in these instances, so the extracted text will be upper-case as well.

Flattening of images and/or layers should be avoided, so images can be extracted as separate items;

Maximum 2400px width and height for large images;

The ideal resolution of the image is more than 300DPI, however, the file should not exceed 300MB in size;

If the file is bigger than 300MB then you can reduce the image resolution to around 150DPI and/ or use better compression.

No security should be used – please disable password protection;

Compression is fine but please pay attention to image sizes (read Image section);

All pages should be single-page, double spread PDFs will not be processed;

Don't upload single pages PDFs. If you have multiple single pages PDFs, please compile all of the pages into 1 PDF and upload it;

Please check if the pages are in the correct order before uploading.

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