v3.30.0

UniPDF version 3.30.0 contains new features and multiple bug fixes. The list of changes is as follows.

Bug

UP-266 ExtractPageText is throwing an error: range check

UP-260 Image extraction hangs and memory keeps increasing

UP-264 Loaded fonts cause panics for concurrent map read and writes

Task

UP-271 Update pkcs7 package to 0.1.0 (contains multiple fixes for digital signatures)

UP-270 Implement QA and testing process for PDF/A validation

UP-262 PDF Page Rotation hierarchy handling (fixes bugs when Rotate is specified on parent Pages element)

v3.29.0

UniPDF version 3.29.0 contains new features and multiple bug fixes. Notably, PDF/A verification for fonts has been implemented. In addition, digital signing of encrypted PDF files is now supported.

The list of changes is as follows.

Bug

UP-259 ERROR: UniDoc pdfReader failed to ExtractPageText: pageNum=1 err=range check error

UP-256 invalid Page Rotate object

UP-255 Another instance of Split operation failed on v3.28.0

UP-254 Unexpected behaviour when the contents of the a cell that has a rowspan > 1 exceeds the height of the rest of the table.

UP-242 Signing invalidates document

UP-240 Optimizer issue: Failed creating multi encoder: invalid filter in multi filter array

UP-142 Rendering issue where image content is blacked out

UP-141 Path drawing looks different than in Adobe

Enhancements

UP-239 As a user I want to encrypt pdfs and allow signing encrypted pdfs so only intended users can view and sign them

UP-263 Implement PDF/A font verifiers

UP-241 creator - Add example for table rowspan

New examples

• signatures/pdf_sign_and_encrypt_pdf.go
  Showcases how to encrypt and apply a digital signature to an encrypted file.

• signatures/pdf_sign_twice_visible_annotation.go
  Example of multiple signing with visible annotations - digital signatures

• text/pdf_search_replace_advanced.go
  More advanced example of search and replace with UniPDF.

v3.28.0

This minor release of UniPDF contains the following changes:

New Features:

• Initial PDF/A support for validation and generation (beta). [UP-95]
  • Example: Generating PDF/A compatible output - pdf_apply_standard.go. Demonstrates opening a non-compatible PDF file and converts to PDF/A-1b compatible output.
  • Example: PDF/A validation - pdf_validate_standard.go. Demonstrates PDF/A-1a and PDF/A-1b document validation.

Enhancements and fixes

• More resilient error handling in PDF optimizers [UP-244]
• Creator: Allow frontpage to contain multiple pages [UP-235]
• Creator: Fix page-wrapping for images in table [UP-237]
• Digital signing: adbe.x509.rsa_sha1 handler - Detect algorithm from pkcs#1 package [UP-238]
• Form fields: Fix text alignment for appearance generation due to encoding issue [UP-246]

v3.27.0

This minor release of UniPDF contains the following changes:

New features:

• Support for filling image form fields. [UP-228]
• Row span support for tables in the creator [UP-236]

Enhancements and fixes:

• Fixes in form fill appearance with several bugs in text field appearance generation fixed. More detail to follow. [UP-219]
• Fix problem in image optimizer with "unsupported encoding parameter" issue [UP-190]
• Fix issue with image optimizer with "invalid operand" error [UP-190]
• Fix image optimizer PPI calculation with more advanced content stream processor [UP-160]
• Fix error when Rotate page object was float [UP-229]
• Fix error when AES buf length was < 16 [UP-229]

v3.26.1

This bugfix release of UniPDF contains the following fix:

• Fix problem with compressing duplicate streams [UP-212]

v3.26.0

This minor release of UniPDF contains the following changes:

• [UP-206] Add styled paragraph text vertical align options
• [UP-215] Resume decoding CCITTFax image upon failure

v3.25.0

This minor release of UniPDF contains the following changes:

• [UP-207] Composite font widths fix
• [UP-210] Fix graphic state
• [UP-211] Fix GetNamedDestinations and add GetNameDictionary method
• [UP-208] Add character horizontal scaling support for styled paragraph

v3.24.0

This minor release includes:

• Add OpenAction to PdfWriter to support Javascript action on document open
  Example: pdf_add_javascript_docopen.go
• Add NewPdfReaderFromFile for more convenient opening files with options
• Flatten bugfix for form with inherited flags [UP-209]

v3.23.0

This minor release includes:

• Add text overflow constants
• Integrate text overflow options in the styled paragraph component
• Add page finalize callback function for creator instances
• Minor clip path calculation improvement

v3.22.0

This minor release of UniPDF has the following updates:

• Add model.PdfPage.Size method
• Improve text rendering [UP-188]
• Fix crash on font subsetting. Fixes #451