Optimizing your PDFs for web before you publish them to Issuu will ensure the highest possible image quality and the most error free rendering of vector objects — in other words, the best presentation for your readers. Keep the following in mind when preparing your content for exporting:
- Image PPI (pixels per inch) should be 150, both for color and grayscale images.
- Complex vector objects must be simplified or flattened (as bitmap).
- InDesign effects such as drop-shadows, glow, special strokes, or transparency may not be fully supported.
There are two ways of adding hyperlinks to your content:
- The easiest way is to use the Issuu Link Editor after you've published your content. Please see the help articles under Adding Links to my publication, for tips on how to use our Link Editor tool.
- You also have the possibility to add them using your favourite creation software (InDesign, QuarkExpress, etc), by including them directly in the working file.
InDesign export settings
Depending on your content and InDesign version these are suggested guidelines.
If you're using InDesign to create your content, you can download this Issuu Export Preset and add it to your presets, to ensure that during the export process, your PDF is Issuu-ready, or follow the steps below if you'd like to set up the preset yourself.
1. Select File > Adobe PDF Presets > Define
2. Select "New..." and set Preset Name to "Issuu Export Preset" and Compatibility: Acrobat 6 (PDF 1.5)
3. "General" settings
- "Optimize for Fast Web View": Enabled
- "Create Tagged PDF": Enabled
- Export Layers: "Visible layers"
- Include "Hyperlinks": Enabled
4. "Compression" settings
- Set Color, Grayscale and Monochrome images to "Bicubic Downsampling to 150 pixels per inch" for images over 150 pixels per inch.
- Compress Text and Line Art: Enabled
5. Save your new Issuu Export Preset and use it to save content as PDFs.
6. Publish to Issuu. You can select to publish your content as unlisted until you are ready to publish.
To manage pages and spreads, read this article from InDesign.