If you work with PDFs for commercial printing or online distribution, your settings determine the quality, compatibility and final file size. This guide covers practical steps in Adobe Acrobat Pro: from checking images and managing colour profiles to PDF/X and linearisation. If you purchased Adobe Acrobat Pro from Licensgo, you can apply these techniques to your files immediately.

1Step 1 — prepare the source file

Export from the native app (InDesign, Illustrator, Photoshop) using appropriate settings: set the image resolution, embed or subset fonts and assign the correct colour profile. Where possible, export directly to PDF/X from the authoring app to reduce the fixes needed in Acrobat.

If you only have the final PDF, open it in Adobe Acrobat Pro and use File > Save As Other > Optimized PDF → ‘Audit space usage’ before changing anything.

Quick tip

Export to PDF/X at source when sending to a commercial printer; it embeds necessary profiles and flattens transparencies correctly.

2Step 2 — image settings and compression

In Adobe Acrobat Pro, use PDF Optimizer → Images: audit and set the downsampling and compression type for each image type. Choose higher ppi for print and lower for the web, and prefer JPEG2000 or JPEG with quality controls for photographs; use ZIP for line art when you need lossless compression.

  • photographs: downsample to 300 ppi for print, 150 ppi for web;
  • line art: keep 600–1200 ppi and use ZIP or lossless compression;
  • colour images for the web: convert to 8-bit sRGB and use medium JPEG quality to balance size and appearance.
Warning

Excessive downsampling of line art causes jagged edges in print; test a sample page before applying global downsampling.

3Step 3 — colour profiles and PDF/X for print

For commercial printing, convert images to the printer's CMYK profile (e.g. FOGRA39) in the authoring app, or use Acrobat's conversion if necessary. In Acrobat, choose Output Preview and Convert to Destination if the print shop requests a specific profile.

Select PDF/X-1a if the workflow requires flattened transparency and strict CMYK; choose PDF/X-4 to preserve live transparency and modern colour workflows. Validate with Preflight before delivery.

  • PDF/X-1a: high compatibility for traditional printing;
  • PDF/X-4: better for modern workflows with transparency and embedded ICC profiles;
  • Preflight: use the check to find unsupported objects and missing fonts.

4Step 4 — web optimisation and linearisation

Use File > Save As Other > Optimized PDF → discard unnecessary objects (metadata, hidden layers, unused form fields) and enable ‘Optimize for Fast Web View’ to linearise the file. Linearisation arranges the file so that the first pages download first in a browser or email preview.

For email distribution, reduce image resolution for screen-only use, remove embedded thumbnails and attachments, and consider zipping very large PDFs. Ensure the first pages are lightweight for fast preview.

Pro tip

Use ‘Audit space usage’ first to see which elements add the most weight, then target them in PDF Optimizer.

5Step 5 — typography: fonts and appearance

Embed or subset fonts: subsetting reduces file size by including only the glyphs used. Avoid converting text to outlines unless the print shop explicitly requests it, as outlined text cannot be selected or searched.

Check font embedding in Acrobat via File > Properties > Fonts. If a font cannot be embedded for licensing reasons, replace it or ask the printer to supply a substitute.

  • subset fonts to reduce size but keep typographic fidelity when possible;
  • embed full fonts only on printer request;
  • avoid outlining unless absolutely necessary for compatibility.

6Step 6 — validation and delivery

Run Preflight checks in Adobe Acrobat Pro for PDF/X compliance, colour conversion issues and missing fonts. Export a proof PDF and, if possible, ask the print shop for a test proof to confirm colour and layout before the full run.

For online delivery, remember to keep a backup of the source files and optimised PDFs. If you distribute via email or the cloud, linearise the PDF for the best preview performance.

Need the software? You can buy Adobe Acrobat Pro or Adobe Creative Cloud from Licensgo and apply these settings immediately.

  • save a proof copy before heavy optimisation;
  • use Preflight to validate the final PDF;
  • linearise for online delivery and keep an unoptimised master file.

7Extra resources

If you need the application, you'll find Adobe Acrobat Pro and Adobe Creative Cloud in the Licensgo catalogue with immediate digital delivery: Adobe Acrobat Pro and Adobe Creative Cloud.

Remember to keep backups of your master files and be mindful of privacy when sharing PDFs online; see our guides on practical backup strategies and browser privacy for safe sharing.