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PDF Specification Archive

The latest PDF 2.0 standard (ISO 32000-2:2020) is now available at no cost. For additional reference, this page serves as an index of the evolution of the PDF format, and includes external links to all legacy Adobe PDF references and errata, as well as to the ISO 32000 family of standards.

PDF Version	Year	Reference Documents
ISO 32000-2:2020 (PDF 2.0)	2020	ISO 32000-2:2020 Document management — Portable document format — Part 2: PDF 2.0 Errata: ISO and industry-based resolutions for issues against ISO 32000-2:2020 ISO Technical Specification Extensions and Clarifications to PDF 2.0: ISO/TS 32001:2022 Document management — Portable Document Format — Extensions to Hash Algorithm Support in ISO 32000-2 (PDF 2.0) ISO/TS 32002:2022 Document management — Portable Document Format — Extensions to Digital Signatures in ISO 32000-2 (PDF 2.0) ISO/TS 24064:2023 Document management — Portable document format — RichMedia annotations conforming to the ISO 10303-242 (STEP AP 242) specification ISO/TS 32003:2023 Document management — Portable Document Format — Adding support of AES-GCM in PDF 2.0 ISO/TS 32004:202x Document management — Portable Document Format — Integrity protection in encrypted documents in PDF 2.0 Extension ISO/TS 32005:2023 Document management — Portable Document Format — PDF 1.7 and 2.0 structure namespace inclusion in ISO 32000-2 Clarification ISO/TS 32007:2024 Document management — Portable Document Format — RichMedia annotations conforming to glTF assets
ISO 32000-2:2017 (PDF 2.0)	2017	ISO 32000-2:2017 Document management — Portable document format — Part 2: PDF 2.0 (withdrawn)
ISO 32000-1:2008 (PDF 1.7)	2008	ISO 32000-1:2008 Document management — Portable document format — Part 1: PDF 1.7 Adobe equivalent: Document management — Portable document format — Part 1: PDF 1.7 (free) Adobe Supplement to ISO 32000, BaseVersion 1.7, ExtensionLevel 3 (WayBack Machine) Adobe Supplement to ISO 32000, BaseVersion 1.7, ExtensionLevel 5 (WayBack Machine) Adobe Public Patent License statement regarding ISO 32000-1:2008 (Wayback Machine)
Adobe PDF 1.7	2006	PDF Reference sixth edition, Adobe Portable Document Format Version 1.7 (WayBack Machine) PDF 1.7 Errata (WayBack Machine)
Adobe PDF 1.6	2004	PDF Reference fifth edition, Adobe Portable Document Format Version 1.6 PDF 1.6 Errata (WayBack Machine) Blend modes addendum (WayBack Machine)
Adobe PDF 1.5	2003	PDF Reference fourth edition, Adobe Portable Document Format Version 1.5 PDF 1.5 Errata (WayBack Machine)
Adobe PDF 1.4	2001	PDF Reference third edition, Adobe Portable Document Format Version 1.4 PDF 1.4 Errata (WayBack Machine)
Adobe PDF 1.3	2000	PDF Reference second edition, Adobe Portable Document Format Version 1.3 PDF 1.3 Errata (WayBack Machine)
Adobe PDF 1.2	1996	Portable Document Format Reference Manual Version 1.2
Adobe PDF 1.1	1996	Portable Document Format Reference Manual Version 1.1 (ISBN 0–201–62628–4)
Adobe PDF 1.0	1993	Portable Document Format Reference Manual Version 1.0 (ISBN 0–201–62628–4)

References

https://opensource.adobe.com/dc-acrobat-sdk-docs/acrobatsdk/#pdf-reference – new Adobe resource in May 2022 providing some legacy PDF reference documents only (no errata).

https://www.adobe.com/devnet/pdf/pdf_reference_archive.html – original website with all legacy Adobe documents. No longer available except via the WayBack Machine.

https://www.loc.gov/preservation/digital/formats/fdd/fdd000316.shtml

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