Export your InDesign file to PDF only after Preflight shows no missing fonts, no broken links, correct bleed, and the right PDF preset. A clean PDF starts before you click Export. If the document has unresolved links or substituted fonts, the PDF may still export, but it will not be reliable for print.
TLDR: Open Window > Output > Preflight, fix every red error, then export using File > Adobe PDF Presets. For most professional print jobs, use PDF/X-4, include bleed, and confirm that fonts are embedded. For example, a 24-page brochure with 86 linked images and 6 fonts should show 0 Preflight errors before export, or the printer may reject it. A five-minute check can prevent a reprint that costs hundreds of dollars.
1. Check the document before exporting
Before saving a PDF, run InDesign’s built-in Preflight. This is not optional if the file is going to a printer. Preflight checks for missing fonts, broken image links, overset text, low-resolution images, color issues, and missing bleed.
Go to Window > Output > Preflight. Make sure On is checked. If the panel shows a green light, the document meets the active profile. If it shows red, expand the error list and fix each issue.
It drives me crazy that InDesign will still let you export a PDF with serious file problems. A missing image may show as a low-quality preview. A missing font may be replaced without being obvious at a glance. That is how bad PDFs reach print vendors.
2. Fix missing or substituted fonts
Fonts are one of the most common reasons a PDF fails at print. Open Type > Find/Replace Font. This panel lists every font used in the document. If you see a warning icon, InDesign cannot find that font.
Fix font problems in one of these ways:
- Activate the font if it comes from Adobe Fonts or your font manager.
- Install the correct font file if the typeface was supplied by a client or designer.
- Replace the font with an approved alternative using Find/Replace Font.
- Avoid outlining text unless the printer asks for it. Outlined text is harder to edit and can affect fine typography.
When exporting to PDF, InDesign normally embeds fonts automatically if the font license allows it. To confirm this later, open the PDF in Acrobat and check File > Properties > Fonts. Each font should say Embedded or Embedded Subset.
3. Update all linked images and graphics
InDesign does not usually store full-resolution images inside the document. It links to them. That means the PDF depends on those links being current and available when you export.
Open Window > Links. Look for warning icons. A red question mark means the file is missing. A yellow triangle means the source file was edited after it was placed. Both should be fixed.
- Use Relink to point InDesign to a missing file.
- Use Update Link if the file has changed.
- Check Effective PPI for raster images. For print, aim for about 300 PPI at final size.
- Keep logos and line art as vector files when possible, such as AI, EPS, or PDF.
The annoying part is that a layout can look fine on screen while using a 72 PPI image. On press, that same image can look soft or pixelated. Do not trust the screen preview alone.
4. Confirm bleed, margins, and page setup
If the design has color, images, or shapes running to the edge of the page, it needs bleed. Most printers ask for 0.125 in or 3 mm bleed on all sides. Check the printer’s specification sheet before exporting.
To review or change bleed, go to File > Document Setup, then open Bleed and Slug. Extend background colors and images to the bleed guides. Do not just set the bleed value and leave artwork at the trim edge.
Also check margins and safe areas. Text, page numbers, and key logos should sit inside the safe zone. For many print pieces, keep critical content at least 0.125 in to 0.25 in away from the trim line.
5. Choose the right Adobe PDF preset
Go to File > Adobe PDF Presets. For professional printing, common choices are PDF/X-4 and Press Quality. PDF/X-4 is often preferred by modern print shops because it supports live transparency and color-managed workflows.
Use PDF/X-1a only if the printer specifically requests it. It flattens transparency and converts colors in stricter ways. That can be useful for older systems, but it is not the safest default for every job.
For office printing or review copies, use High Quality Print or Smallest File Size, depending on the purpose. Do not send a low-size proof PDF to a commercial printer unless they ask for it.
6. Set marks and bleed correctly
In the PDF export window, open the Marks and Bleeds section. For commercial print, check Use Document Bleed Settings. This tells InDesign to include the bleed values from your document setup.
Ask the printer before adding crop marks. Some printers want them. Others impose files through their own software and prefer no marks. If marks are requested, check Crop Marks and leave the offset large enough so marks do not touch the bleed. A common offset is around 0.0833 in or more.
7. Set compression without damaging images
Open the Compression section. For print PDFs, color and grayscale images are often downsampled to 300 PPI for images above 450 PPI. This keeps the file reasonable without hurting normal print quality.
Avoid heavy JPEG compression. Use Maximum image quality when available. If the PDF is for a billboard or a very large format piece, ask the printer for resolution requirements. Large format files may not need 300 PPI at final size because they are viewed from farther away.
8. Handle color and output settings
Open the Output section. Color settings depend on the printer’s requirements. Many printers accept PDF/X-4 files with color profiles preserved. Others want all colors converted to a specific CMYK profile, such as a regional coated paper profile.
If you are unsure, do not guess. Ask the printer for:
- The preferred PDF standard
- The required CMYK profile
- Bleed size
- Whether crop marks are needed
- Whether rich black is allowed for large black areas
For black text, use standard 100% K unless the printer gives other instructions. Small text built from several ink colors can print with fuzzy edges if plates are slightly out of register.
9. Export the PDF
After settings are ready, click Export. Choose a clear file name. Include the project name, size, version, and date if needed. For example: AnnualReport 8×10 Print v3 2026 02 14.pdf.
Do not overwrite the only approved proof. Keep versions. A clean naming system prevents the classic mistake of sending final final revised to print while the approved file sits in another folder.
10. Inspect the final PDF before sending
Open the exported PDF in Adobe Acrobat. Check every page at 100% and then zoom in on type, logos, and fine lines. Review page size, bleed, and font embedding. If you have Acrobat Pro, use Print Production > Output Preview to inspect separations and ink values.
Before delivery, confirm these items:
- All pages are present and in the correct order.
- Fonts are embedded in PDF properties.
- Images are sharp and not missing.
- Bleed is included where artwork reaches the edge.
- Colors match the print requirement, especially for CMYK jobs.
- The file opens cleanly on another computer if possible.
When to package the InDesign file too
A press-ready PDF is often enough. Still, some printers also ask for the packaged InDesign file. Use File > Package to collect the INDD file, linked graphics, document fonts where licensing allows, and a report.
Packaging is useful if the printer must adjust bleeds, fix a small typo, or prepare special finishing. It is not a replacement for a proper PDF. Treat it as a backup set, not the main delivery file.
A reliable print PDF comes from disciplined checks, not luck. Fix fonts, update links, confirm bleed, choose the correct preset, and inspect the result in Acrobat. That process takes a few extra minutes, but it protects the budget, the schedule, and the final printed piece.