locally hosted web application that allows you to perform various operations on PDF files
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Balázs Szücs 1cd3e2846e
feat(stamp): add dynamic variables and templates for stamp text customization (#5546)
# Description of Changes

This pull request improves the PDF stamping feature, particularly the
text stamping functionality, by introducing dynamic variables, improving
formatting flexibility, and refining positioning logic. The changes
include backend support for dynamic stamp variables (such as date, time,
filename, and metadata), improvements to text layout and positioning,
updates to the API and frontend for usability, and localization
enhancements for user guidance.

**Dynamic Stamp Variables and Text Processing:**

* Added support for dynamic variables in stamp text (e.g., `@date`,
`@time`, `@page_number`, `@filename`, `@uuid`, and metadata fields),
including custom date formats and escaping for literal `@` symbols. This
is handled by the new `processStampText` method in
`StampController.java`.
* Implemented validation and formatting for custom date variables,
ensuring only safe formats are accepted and providing user-friendly
error messages for invalid formats.

**Text Layout and Positioning Improvements:**

* Refactored text and image stamp positioning: now calculates line
heights, block heights, and widths for multi-line stamps, and adjusts
placement logic for more accurate alignment (top, center, bottom) and
margins.
* Updated the default font size for stamps to 40pt and improved font
size handling in both backend and frontend, including validation for
positive values

**API and Method Signature Updates:**

* Extended method signatures to include additional context (such as page
index and filename) for more powerful variable substitution in stamps
**Frontend and Localization Enhancements:**

* Added comprehensive help text, variable descriptions, and template
examples to the UI, making it easier for users to understand and use
dynamic stamp variables.
* Improved accessibility and clarity in the stamp formatting UI by
disabling controls appropriately and providing clearer descriptions.



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Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)
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---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

---------

Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
Co-authored-by: ConnorYoh <40631091+ConnorYoh@users.noreply.github.com>
Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
2026-01-29 21:16:14 +00:00
.devcontainer chore: update development configs, formatting tools, and CI enhancements (#4130) 2025-08-08 12:52:51 +01:00
.github chore(ci): remove automated version sync job from build workflow (#5547) 2026-01-24 23:45:48 +00:00
.vscode V2 Auto rename (#4244) 2025-09-05 17:12:52 +01:00
app feat(stamp): add dynamic variables and templates for stamp text customization (#5546) 2026-01-29 21:16:14 +00:00
devGuide refactor: remove legacy Thymeleaf web UI controllers and templates (#5406) 2026-01-21 21:58:29 +00:00
devTools build(deps-dev): bump stylelint-config-standard from 39.0.1 to 40.0.0 in /devTools (#5504) 2026-01-21 22:24:29 +00:00
docker removal of old java desktop + workspace change in tauri (#5459) 2026-01-23 11:42:33 +00:00
docs V1 merge (#5193) 2025-12-21 10:40:32 +00:00
frontend feat(stamp): add dynamic variables and templates for stamp text customization (#5546) 2026-01-29 21:16:14 +00:00
gradle/wrapper
images Revert "[ImgBot] Optimize images" (#5293) 2025-12-22 22:10:23 +00:00
scripts fix: PDF Text Editor file open (#5572) 2026-01-29 16:52:21 +00:00
testing build(deps): bump pypdf from 6.6.0 to 6.6.2 in /testing/cucumber in the pip group across 1 directory (#5577) 2026-01-28 16:11:15 +00:00
.dockerignore java frontend (#5097) 2025-12-02 17:15:29 +00:00
.editorconfig Add linting to frontend (#4341) 2025-09-04 14:08:28 +01:00
.git-blame-ignore-revs refactor: move modules under app/ directory and update file paths (#3938) 2025-07-14 20:53:11 +01:00
.gitattributes refactor: move modules under app/ directory and update file paths (#3938) 2025-07-14 20:53:11 +01:00
.gitignore refactor(security): clean up SSO handling, harden URL parsing, and bump dependencies (#5523) 2026-01-22 19:39:34 +00:00
.pre-commit-config.yaml deps(ci): update Dependabot, pre-commit tooling, and testing dependencies (#5170) 2025-12-27 23:56:57 +00:00
ADDING_TOOLS.md refactor: remove legacy Thymeleaf web UI controllers and templates (#5406) 2026-01-21 21:58:29 +00:00
build.gradle possible login fixes (#5444) 2026-01-28 23:57:43 +00:00
CLAUDE.md removal of old java desktop + workspace change in tauri (#5459) 2026-01-23 11:42:33 +00:00
CONTRIBUTING.md
DATABASE.md feat(database): make backup schedule configurable via system keys (#4251) 2025-09-04 15:02:31 +01:00
DeveloperGuide.md refactor: remove legacy Thymeleaf web UI controllers and templates (#5406) 2026-01-21 21:58:29 +00:00
gradle.properties build(local): simplify writeVersion task with WriteProperties plugin and enable build caching (#4139) 2025-08-08 10:36:30 +01:00
gradlew
gradlew.bat
HowToUseOCR.md
launch4jConfig.xml ci: enhance GitHub Actions workflows with Gradle setup, caching improvements, and Docker image testing (#3956) 2025-07-16 17:17:11 +01:00
LICENSE Update LICENSE with proprietary directory details 2025-11-27 11:11:53 +00:00
README.md Update wording for third-party services reference 2025-12-02 19:14:03 +00:00
SECURITY.md
settings.gradle chore(ci): enable Gradle dependency caching across GitHub workflows (#5400) 2026-01-19 19:03:50 +00:00
test_globalsign.pdf V2 Validate PDF Signature tool (#4679) 2025-10-16 13:45:59 +01:00
test_irs_signed.pdf V2 Validate PDF Signature tool (#4679) 2025-10-16 13:45:59 +01:00
WINDOWS_SIGNING.md Add initial Windows signing infrastructure (#4945) 2025-11-20 12:21:42 +00:00

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