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- PDF/X-1a
Convert your print PDF to PDF/X-1a.
Convert print PDFs for printers that require PDF/X
- Turns your print PDF into PDF/X-1a for printers
- CMYK, fonts embedded, transparencies reduced
- Preflight first: colors, fonts, transparency, bleed
PDF/X-1a
Free preview: Check of your PDF before conversion
- Colours converted to CMYKRGB → CMYK
- Fonts embedded12 of 12
- Transparency flattened3 objects
- Output intent setPDF/X-1a:2001
What the conversion checks and fixes
What you get out of it
For printers that ask for it
Some printers and distributors want PDF/X-1a. This turns your PDF into one.
Check first
You see colours, fonts, transparencies and bleed before the conversion.
One price per file
No software to buy, no prepress to learn: upload, convert, download.
When you need a PDF/X-1a converter
Some printers and distributors ask for PDF/X-1a: CMYK colours, embedded fonts, no transparency. Upload your PDF and download the converted file.
Amazon KDP accepts normal print PDFs but names PDF/X-1a as its preferred format. IngramSpark and many printers require PDF/X-1a, because it leaves no room for surprises in print: no RGB, no missing fonts, no transparency.
What PDF/X-1a means
PDF/X-1a is an ISO standard that leaves a printer nothing to guess. The converter checks every point and only hands you the file if it passes.
CMYK only
Images and vectors in printing colours, no RGB. Very bright screen colours can turn a little duller, as they would in print anyway.
All fonts embedded
Every font is inside the file, in a format the standard allows.
No transparency
Transparent areas, soft masks and alpha channels are flattened.
Output intent and PDF/X label
The colour profile for the print and the PDF/X identifier are written into the file.
No comments or links
Annotations and links are removed; they have no place in a print file.
PDF 1.3 or 1.4
The file version that PDF/X-1a prescribes.
Who asks for it or prefers it
- IngramSpark requires PDF/X-1a:2001 or PDF/X-3:2002, all fonts embedded and a total ink coverage of at most 240%. The converter handles the format; ink coverage stays as in your file.
- Amazon KDP names PDF/X-1a as its preferred format but also accepts normal print PDFs with embedded fonts, bleed and flattened transparency.
- Our typesetting already delivers its print PDF as PDF/X-1a. Here you convert PDFs from other programs.
- IngramSpark, File Creation Guide (24 Aug 2026), p. 11. www.ingramspark.com/hubfs/downloads/file-creation-guide.pdf
- Amazon KDP Help, Paperback and hardcover manuscript formatting guide. kdp.amazon.com/en_US/help/topic/G201857950
- Amazon KDP Help, Create a paperback manuscript: "PDF/X-1a is preferred", flatten transparency (as of 7 November 2026). kdp.amazon.com/en_US/help/topic/G202145060
PDF/X-1a conversion compared
Compared task: turn one finished print PDF into PDF/X-1a.
| Feature |  | Adobe Acrobat Pro (annual plan, billed monthly) |
|---|---|---|
| How | Upload, see the check, download | PDF/X-1a:2001 setting in the Professional versions of Acrobat2 |
| Price | $2.4020 tokens per file | Subscription, price on Adobe's pricing page; monthly plans also available1 |
| Billing | One-off per file, no subscription needed | Annual plan; a fee of half the remaining annual commitment applies if you cancel after 14 days1 |
As of 7 November 2026. Prices as shown on the provider's website.
Adobe Acrobat and IngramSpark are trademarks of their respective owners. Bookfairy is not affiliated with them.
Sources (2)
- Adobe, Acrobat product page (checked 8 Nov 2026). adobe.com/acrobat/complete-pdf-solution.html
- IngramSpark, File Creation Guide (24 Aug 2026), p. 11: PDF/X-1a:2001 setting in Acrobat Professional. ingramspark.com/hubfs/downloads/file-creation-g…
How it works
Upload your PDF
Interior or cover.
See the check
Colours, fonts, transparency, bleed.
Download PDF/X-1a
Converted and ready for the printer.
What you get
- CMYK colours
- Fonts embedded
- Transparency flattened
- PDF/X-1a output intent
Questions about PDF/X-1a
Does KDP need PDF/X-1a?
It isn't mandatory: KDP also accepts standard print PDFs, but its help names PDF/X-1a as the preferred format. IngramSpark and many printers require PDF/X.
Doesn't the typesetting already deliver PDF/X?
Yes: our typesetting delivers the print PDF as PDF/X-1a, the format KDP prefers and IngramSpark requires.
This converter is for PDFs from other programs, such as Word or Affinity, when IngramSpark or a printer asks for PDF/X-1a.
Will my colours change?
Converting RGB to CMYK can make very bright colours a little duller. That is what the print will look like anyway.