2026.11 Release Notes

Release date: 11th November 2026

Next release: 23rd December 2026

Announcements

• We have reviewed our Java version policy which you can find here
• New and updated tutorials:
  • How to linearize a PDF file
  • Linearize with the PDF Optimizer
  • Linearize with the PDF Manipulator
  • Linearize the PDF/A-3 Converter output
  • New JVM flag imageCacheSize
  • Extract structured content as JSON Lines
  • Fix PDF files with the Arlington Model PDF Validator
• New blog posts:
  • PDF/A Compliance in Java

Key features at a glance

• PDF Linearizer
• Brotli PDF writer
• JXLDecode support
• JSON Lines structured content support
• PDF/A and Arlington improvements
• Lots of performance and memory improvements
  • We have found that JPedal renders PDF files ~19% faster than the 30th September release with the median file ~16% faster.

New Features

• JPED-1129, JPED-1264 Added support for writing PDFs using Linearization
• JPED-1213 Added the ability to transcode Brotli encoded files to other filters (e.g. Flate)
• JPED-1215 Added the ability to detect and report if a file contains any Brotli encoded streams
• JPED-1223 Added support for writing marked content as JSON Lines (.jsonl)
• JPED-1227 Added support for font substitution in the PDF/A Converter
• JPED-1241 Added support for checking composite fonts in the PDF/A Converter
• JPED-1243 Added support for checking symbolic fonts in the PDF/A Converter
• JPED-1244 Added support for checking glyph width consistency in the PDF/A Converter
• JPED-1246 Added support for inputting files as streams or byte arrays in the PDF/A Converter
• JPED-1257 Added the ability to write Brotli encoded streams with the PDF Manipulator
• JPED-1261 Added a new ‘fix mode’ to the Arlington Model PDF Validator
• CORE-4286 Added experimental support for the new JPEG-XL filter (JXLDecode)

Enhancements

• JPED-930 Improved the support for running the JPedal Inspector across multiple monitors with different scaling
• JPED-1229 Improved the performance of the JPedal Inspector’s syntax highlighter
• JPED-1232 Improved the accuracy of the .notdef glyph checker in the PDF/A Converter
• JPED-1250, JPED-1260 Improved the accuracy and PDF specification compliance of XRef tables and streams created by JPedal
• JPED-1253 Added proper support for hybrid-reference files in the PDF/A Converter and Arlington Model PDF Validator
• JPED-1256 Added the ability to infer missing colour spaces of Image XObjects in the PDF/A Converter
• JPED-1263 Added support for removing PDF-1.5 UR digital signatures
• CORE-4246 Improved the accuracy of sub-pixel clipping
• CORE-4275 Improved the performance of tiling pattern cells in fill commands
• CORE-4277, CORE-4280, CORE-4311 Improved the performance of rendering Type3 fonts
• CORE-4281 Improved the performance and reduced the memory required when recovering large corrupted Flate streams
• CORE-4282, CORE-4302, CORE-4314, CORE-4316 Improved the performance of image smoothing
• CORE-4285 Improved the performance of drawing using ICCBased colour spaces
• CORE-4290 Improved the performance of image downsampling
• CORE-4292 Improved the performance of rendering large pattern cells and masks used in fills
• CORE-4293, CORE-4334 Improved the performance and reduced the memory required when drawing page clips
• CORE-4295 Reduced the memory required to read objects that have an unknown length
• CORE-4296 Improved the handling of files with incorrect Size entries in their trailers
• CORE-4297, CORE-4298 Improved the performance and reduced the memory required when reading predefined CMap tables
• CORE-4301 Improved the performance of rendering 1-bit images
• CORE-4305 Improved the performance of rendering ARGB images
• CORE-4247, CORE-4306, CORE-4307 Improved the performance and reduced the memory required when rendering soft masks
• CORE-4308 Improved the performance of rendering pattern images that are enlarged
• CORE-4309 Reduced the memory required to render pages to images
• CORE-4312 Improved the performance of URL detection within text
• CORE-4313 Reduced the memory required when rendering text
• CORE-4317 Reduced the memory required when parsing content streams
• CORE-4318 Reduced the memory required when parsing arrays of rectangles
• CORE-4319, CORE-4320 Reduced the memory required to store glyphs
• CORE-4330 Improved the performance of rendering by disabling anti-aliasing when it is unnecessary
• CORE-4331 Improved the performance when images are drawn more than once in a document
• CORE-4333 Added full support for rendering glyphs with FDArray FontMatrices
• CORE-4338 Improved the accuracy of rendering Coons patches
• CORE-4351 Improved the performance of rendering JBIG2 images which are used as soft masks by different images
• CORE-4353 Reduced the memory required when writing encrypted temporary files
• JDEL-809 Improved the performance and reduced the memory required for internal stream data structures
• JDEL-811, JDEL-815 Improved the performance of decoding JBIG2 images
• JDEL-817 Improved the performance of JPEG decoding
• JDEL-818, JDEL-820 Improved the performance of CMYK colour conversions

Fixes

• JPED-896 Fixed a rare bug where cached images were sometimes selected incorrectly causing the wrong image to be rendered
• JPED-1214 Added the ‘Remove Digital Signatures’ feature to the PDF Manipulator’s command line API
• JPED-1216 Fixed a bug where the JPedal Inspector could not view XRef tables
• JPED-1217 Fixed a bug where the JPedal Inspector’s command window would omit the last command in a stream
• JPED-1218 Fixed a race condition in the JPedal Inspector’s syntax highlighting
• JPED-1220 Fixed a bug where the PDF Manipulator would unnecessarily escape the ASCII z character when embedding PDF names
• JPED-1221 Fixed a bug where X.509 serial numbers were being truncated in the JPedal Viewer
• JPED-1222 Fixed a potential stack overflow in the JSON marked content writer
• JPED-1225 Fixed a bug where PDF Utilities would display incorrect permissions
• JPED-1226 Fixed a bug where Extract Embedded Files would not always find every embedded file
• JPED-1230 Fixed a bug where Converting Pages To Images could not be done more than once
• JPED-1231 Fixed a bug where querying the PDF Utilities for font data would also track images in the file
• JPED-1233 Fixed a bug where the Form Writer would corrupt the output if the input and output were the same file
• JPED-1235 Fixed a bug where the Annotation Writer would crash when writing Link annotations that did not have an action
• JPED-1236 Fixed a bug where Link annotations were not always escaped properly
• JPED-1237 Fixed a bug where the Form Writer could not handle direct AcroForm dictionaries
• JPED-1240 Fixed a bug where the Form Writer was not properly escaping V values
• JPED-1242 Fixed a bug where the Form Writer was not embedding fonts properly
• JPED-1245 Fixed a potential memory leak in the PDF/A Converter
• JPED-1247 Fixed a rare bug where two large integers in an array would crash the PDF Manipulator
• JPED-1248 Improved the accuracy of determining stream extents in the PDF Manipulator
• JPED-1249 Fixed a bug where the PDF/A Converter had capitalized the XMP description property incorrectly
• JPED-1251 Fixed a bug where object generation numbers were not normalized correctly
• JPED-1252 Improved the handling of PDF null vs Java null in the Arlington Model PDF Validator
• JPED-1254 Fixed a bug where hybrid-reference files were written out using XRef streams rather than XRef tables
• JPED-1255 Fixed a bug where the PDF/A Converter refused annotations with a single appearance stream
• JPED-1258 Fixed a bug where the PDF Merger would add a dividing page one page too early
• JPED-1259 Fixed a bug where the output of files written by JPedal included old XRefStm or Linearize dictionaries
• JPED-1265 Fixed a bug where the ‘Remove JavaScript’ feature would delete the entire Next chain in an action even if the children were valid
• CORE-3928 Fixed a bug where converting images between colour spaces would sometimes cause them not to render
• CORE-4165 Fixed a bug where JPX encoded images would not be read correctly and render as noise
• CORE-4210 Fixed a bug where rendering blend modes on some macOS JDKs would cause a not implemented yet exception
• CORE-4213 Improved the handling of CID TrueType fonts that do not have an embedded cmap table
• CORE-4218 Fixed a bug where SMask textures would bleed across opposite edges
• CORE-4238 Fixed a bug where very large soft clip dimensions would cause poor performance
• CORE-4244, CORE-4341 Fixed a bug where the TJ operator did not recognise all PDF-defined whitespace characters as valid array delimiters
• CORE-4245 Fixed a bug where annotations whose appearance streams had a rotation or scaling matrix would lose their content
• CORE-4251 Fixed a bug where text extraction values were wrong for multi-character ToUnicode bfrange mappings
• CORE-4252 Fixed the usecmap handling of predefined UCS2 CMaps in ToUnicode
• CORE-4254 Fixed a bug where patch shadings would ignore the background and leave unpainted pixels when rotated
• CORE-4274 Fixed a bug where fonts that were direct dictionaries were not cached correctly
• CORE-4276 Fixed a bug where tiling pattern positions would be incorrect if the pattern was not rotated
• CORE-4284 Fixed a bug where strokes near a clip’s edge would reset the clip twice per stroke
• CORE-4287 Fixed a bug where the DCT abbreviation was not recognised for inline image filters
• CORE-4288 Fixed a bug where the background was incorrectly drawn when painting with the sh operator
• CORE-4289 Fixed a bug where some patch shadings would render incorrectly
• CORE-4291 Fixed a bug where the OneByteIdentityH CMap was incorrectly treated as multibyte when interpreting hex strings
• CORE-4299 Fixed a bug where Type3 fonts without a differences list would fail to render
• CORE-4300 Fixed a bug where an invalid XRef entry could use a large amount of garbage memory
• CORE-4310 Fixed extraction values and rendering for some characters defined in the standard encoding tables and symbolic TrueType fonts without an Encoding
• CORE-4321 Fixed a bug where some 1-bit masks would be converted to ARGB masks twice
• CORE-4322 Fixed a bug where Type3 glyphs would draw nothing if the font had no resources
• CORE-4328 Fixed a crash which could occur when opening a PDF with invalid PageLabels
• CORE-4347 Fixed a bug where forms with missing appearance streams could cause other forms not to render

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