v1.3.0

gopdfrab 1.3.0 adds a verification-only package and WebAssembly module, makes
every binary smaller and conversion faster, and closes several ways a
conversion could lose content or write a broken file while reporting success.
Every addition is backwards compatible; three lookups are deprecated.

Highlights

• Verify without the converter: github.com/voidrab/gopdfrab/verify is the
  verification API alone, under the same names and over the same types, so
  switching is an import swap. The new ./wasm/verify module is about 6.2 MB
  against the full module's 15.1 MB, so a page can load it first and fetch the
  converter only to convert.
• Smaller, faster: every binary is about 1 MB smaller (1.6 MB in
  WebAssembly) now that the Arlington object model ships as embedded data.
  Conversion makes about a third fewer allocations and runs about 15% faster on
  object-heavy files; verification allocates 6–14% less.
• No more silent loss: embedded files and forbidden annotations removed by
  a conversion are listed in LostObjects, and optional content layers the
  document hides stay hidden instead of becoming visible.
• No more corrupt "conformant" output: a stream shared by several objects,
  or a font program shared by several fonts, is now repaired everywhere it is
  used, not through one reference only.
• Fewer rasterized pages and better ones: opaque transparency groups,
  including those that draw nested forms, stay vector. Transparency flattening
  keeps light and overlapping fills, and the raster fallback draws CFF, Type 1
  and TrueType glyphs and colour spaces correctly.
• Verify cannot be flooded: a violation repeated throughout a content
  stream is reported once per check with a count, instead of once per
  operator, which could run verify out of memory.
• Level-qualified lookups and named profiles: CheckByClauseIn,
  ChecksForClauseIn, Check.ClauseIn, Check.AppliesTo, ProfileByName,
  Profiles and Profile.Name.

Behaviour changes

• Content-stream issues are counted, not repeated: callers that count
  Issues see one issue per check and stream where they saw one per operator.
• ConvertObjectModel and the PDF profile no longer mark the output as
  PDF/A-1b (XMP identifier, OutputIntent, font repairs).
• An ObjectModel profile that enables a PDF/A check is rejected with an
  error naming the check, instead of being verified by PDF/A-1b's rules.
• LostObjects now lists removed attachments, forbidden annotations and
  hidden optional content.

These make results more correct, which the stability policy treats as fixes.

Deprecated

CheckByClause, ChecksForClause and Profile.Allows read PDF/A-1 clauses
only. Use CheckByClauseIn, ChecksForClauseIn and Profile.Has. They stay
until the next major version.

Install

go get github.com/voidrab/gopdfrab@v1.3.0
go install github.com/voidrab/gopdfrab/cmd/gopdfrab@v1.3.0

Or download a CLI binary below. They are static, built with CGO_ENABLED=0;
verify with sha256sum -c checksums.txt.

The full list of additions, changes and fixes is in
CHANGELOG.md.