The effective-resolution walk skipped any form XObject already visited
once when it was nested more than four deep, with one seen-set for the
whole document. A later, larger use of the same form was never measured,
so Reduce File Size and Optimize PDF resampled the image for its smallest
use: a 1200 px image drawn 1 in and 8 in wide through six nested forms
came out 150 px wide, about 19 ppi on the large copy.
- Cycles are detected on the current path of forms, not document-wide.
- A form with its own resources drawn again at the same scale (only
moved) is skipped, as that can't change any image's resolution; forms
without resources draw their caller's images and are always walked.
- Repeat walks are capped at 100,000. If the cap or the 12-level depth
limit leaves a use unmeasured, every image gets INFINITY: recompressed
as the settings say, never resampled.
Fixes#1811
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
* M11: merge image fragments, and the Standard and Mobile optimizer presets
Some PDF printers draw a page picture as thousands of images one pixel row
high (one real page: 3,300 strips, 4.3 MB). The optimizer works image by
image, a one-row image can't be resampled, and every JPEG strip carries its
own headers, so Reduce File Size saved 2 bytes on it.
- pdfcraft-optimize `fragments` (Settings::merge_fragments, on by default):
runs of `q … cm /Im Do Q` drawing upright 8-bit grey or RGB images in one
colour space, sharing their left and right edges and stacked edge to edge
(at least four, nothing else drawn between them; or, failing that, the
rows drawn one under the other up to a gap) become one lossless image at
their finest resolution. The image settings then resample it, and Clean
Up drops the strips. A page whose content can't be read back exactly is
left alone.
- Presets as in Acrobat's Settings menu: Standard (Reduce File Size's
choices) and Mobile (images above 144 ppi to 96 ppi, JPEG high). The PDF
Optimizer dialog has a Settings menu (Custom once an option changes) and
a Merge image fragments box; doc_optimize takes preset and
merge_fragments and reports merged_images and fragments_merged.
- A progress stage for the merge; four new strings in all 21 catalogs.
On the real page: Standard/Reduce 4.3 MB → 231 KB, Mobile → 161 KB, with
a rendering closer to the original than Acrobat's Mobile result (147 KB).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Refresh catalog hashes after merging main
---------
Co-authored-by: magdale76 <16279778+magdale76@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
* cos: decode only the first filter of a stream, strictly
Stream::decoded_first_filter_strict decodes the outer filter of a chain and leaves the rest of the chain encoded, within a caller bound. The optimizer uses it to remove an ASCII85 or ASCIIHex wrapper without inflating the inner data.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
* optimize: strip redundant ASCII wrappers from filtered streams
A stream whose filter array starts with ASCII85Decode or ASCIIHexDecode loses that outer layer when the serialized replacement is smaller. The inner encoded bytes are kept exactly, and the decoded stream is unchanged. Streams with DecodeParms, image, object stream, or Crypt filters are left alone, as are streams whose wrapper fails strict decoding.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
* optimize: document redundant ASCII-wrapper cleanup
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Haiku 5.5 <noreply@anthropic.com>
* M11: Optimize PDF and Reduce File Size run in the background with a progress bar
Advanced optimization and Reduce File Size did all their work on the UI
thread, so on a large file the window stopped repainting until they were
done and looked as if it had crashed.
- pdfcraft-optimize: optimize_with_progress reports each image and the
clean-up; returning false stops with OptimizeError::Cancelled.
- engine: Session::optimize_job captures a copy of the document and the
choices; OptimizeJob::run reports each OptimizeStage (removing user data,
images, cleaning up, merging, writing), stops on request with
EditError::Cancelled and turns a panic into an error so a worker always
reports back. optimized_bytes is the job run in place.
- ui: both commands run the job on a worker thread (inline in tests and on
the web), like OCR and Export. A card at the bottom centre shows the
stage ("Optimizing... image 14 of 40"), a bar that eases towards the
fraction with a light sweeping across it, the percentage and Cancel;
notices stack above it. A second run is refused while one is going. The
control channel's state includes the progress.
The headless doc_optimize and doc_reduce tools stay synchronous. New
strings are translated for es, fr, ja, zh-hans, zh-hant.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Clippy: as_chunks in the signature image background test (follow-up to #355)
#360 switched the image test to as_chunks; #355 added another chunks_exact(4)
in the background test, which clippy's chunks_exact_to_as_chunks rejects.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Optimize: report a failed worker spawn instead of waiting forever
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
The app, crates, binaries, bundle id, packaging, icons, screenshots and docs are now
PdfCraft / pdfcraft (repo storytold/pdfcraft). On first launch the desktop app moves the
PrintCraft settings and crash-recovery folders to the new name, and both apps read settings
saved under the old storage key, so upgrades keep recent files, preferences and unsaved work.
The signing test fixtures keep their PrintCraft subject names (they are binary).
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
mlkonrad