# Description of Changes
This pull request introduces several improvements focused on security
and reliability in both the Docker build process and the backend API.
The most significant changes are the use of digest-pinned Docker base
images to ensure reproducible builds, safer handling of user-provided
filenames in error messages, and a switch to more reliable dependency
installation in CI workflows.
**Docker image security and reproducibility:**
* All Dockerfiles now use digest-pinned base images (e.g.,
`node:20-alpine@sha256:...`, `gradle:8.14-jdk21@sha256:...`,
`alpine:3.22.1@sha256:...`, `nginx:alpine@sha256:...`) to guarantee
build consistency and protect against upstream image changes.
[[1]](diffhunk://#diff-f8faae0938488156cf26e9322ffdf755deaa8770a7ac8c524dd6126c19548888L5-R5)
[[2]](diffhunk://#diff-f8faae0938488156cf26e9322ffdf755deaa8770a7ac8c524dd6126c19548888L18-R18)
[[3]](diffhunk://#diff-f8faae0938488156cf26e9322ffdf755deaa8770a7ac8c524dd6126c19548888L38-R38)
[[4]](diffhunk://#diff-2f5cd3ad965c86a7a5b4af6e0513ad294e0426644d9f5b5358dfb16a2ef995a7L5-R5)
[[5]](diffhunk://#diff-2f5cd3ad965c86a7a5b4af6e0513ad294e0426644d9f5b5358dfb16a2ef995a7L18-R18)
[[6]](diffhunk://#diff-2f5cd3ad965c86a7a5b4af6e0513ad294e0426644d9f5b5358dfb16a2ef995a7L37-R37)
[[7]](diffhunk://#diff-e9edf3a05475d0721a0e65be1ba0eeb162ae972891b0f6d7e1285687efab1de0L9-R9)
[[8]](diffhunk://#diff-fa0700cfd7d90d832649eb1d0503904564bb3b28c48972be7d9f17e4ce32a3dcL9-R9)
[[9]](diffhunk://#diff-2e766aaf0c87e7b8a62d2a2986f6999c38cc35f677479e31b77d1b427c7aeef7L5-R5)
[[10]](diffhunk://#diff-1726db0cbef194c9be3cba9825c0794802b154e15e4c892c1544d0aace03e037L5-R5)
[[11]](diffhunk://#diff-c1b6dd504a16fc68cd064baf9cf07d9dd31da56eb55de69601844ab03a5ae319L5-R5)
[[12]](diffhunk://#diff-2fc7fcfcfdbb617dd8fbb6b1a2ea5709f9018d618d13942cb33d3e0ed127df16L5-R5)
[[13]](diffhunk://#diff-2fc7fcfcfdbb617dd8fbb6b1a2ea5709f9018d618d13942cb33d3e0ed127df16L39-R39)
[[14]](diffhunk://#diff-759e94102d21fe6f9bde8ddb0b4f95b5d5cd214b0355ea0419d3ea6c09e8ffbfL2-R2)
[[15]](diffhunk://#diff-759e94102d21fe6f9bde8ddb0b4f95b5d5cd214b0355ea0419d3ea6c09e8ffbfL19-R19)
**Backend API security:**
* In `ConvertEmlToPDF.java`, error messages now escape user-provided
filenames using `HtmlUtils.htmlEscape`, preventing potential XSS
vulnerabilities when displaying error messages that include filenames.
[[1]](diffhunk://#diff-45d22a96bae3e8a746b7fb2c39e25c80aee0bf733b528a3517db8fdd2a3d25cdR13)
[[2]](diffhunk://#diff-45d22a96bae3e8a746b7fb2c39e25c80aee0bf733b528a3517db8fdd2a3d25cdR156-R170)
**CI/CD reliability:**
* All GitHub Actions workflows (`multiOSReleases.yml`,
`releaseArtifacts.yml`, `tauri-build.yml`) now use `npm ci` instead of
`npm install` for frontend dependency installation, ensuring clean,
reproducible installs that match the lockfile.
[[1]](diffhunk://#diff-895b214ee023c8c26048a2a3b946cfb1ebc4f26fbc8a9c2fa54b77c12e763b6bL271-R271)
[[2]](diffhunk://#diff-699ff98fe113446c403eb07daf16dd1966c2a047ab0b9f7e38fd695d079f7dddL177-R177)
[[3]](diffhunk://#diff-b34ab107dd4bc92075b2e89b6f16e4a2813e267ca7c2afebdb1931a0a3900d5aL177-R177)
---
## 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.
# Description of Changes
<!--
Please provide a summary of the changes, including:
- What was changed
- Why the change was made
- Any challenges encountered
Closes #(issue_number)
-->
---
## 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)
### 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: dependabot[bot] <support@github.com>
Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
Signed-off-by: stirlingbot[bot] <stirlingbot[bot]@users.noreply.github.com>
Co-authored-by: ConnorYoh <40631091+ConnorYoh@users.noreply.github.com>
Co-authored-by: Connor Yoh <connor@stirlingpdf.com>
Co-authored-by: OUNZAR Aymane <aymane.ounzar@imt-atlantique.net>
Co-authored-by: YAOU Reda <yaoureda24@gmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: stirlingbot[bot] <195170888+stirlingbot[bot]@users.noreply.github.com>
Co-authored-by: Balázs Szücs <127139797+balazs-szucs@users.noreply.github.com>
Co-authored-by: Ludy <Ludy87@users.noreply.github.com>
Co-authored-by: tkymmm <136296842+tkymmm@users.noreply.github.com>
Co-authored-by: Peter Dave Hello <hsu@peterdavehello.org>
Co-authored-by: albanobattistella <34811668+albanobattistella@users.noreply.github.com>
Co-authored-by: PingLin8888 <88387490+PingLin8888@users.noreply.github.com>
Co-authored-by: FdaSilvaYY <FdaSilvaYY@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: OteJlo <106060728+OteJlo@users.noreply.github.com>
Co-authored-by: Angel <41905618+TheShadowAngel@users.noreply.github.com>
Co-authored-by: Ricardo Catarino <ricardomicc@gmail.com>
Co-authored-by: Luis Antonio Argüelles González <luis.arguelles@encora.com>
Co-authored-by: Dawid Urbański <31166488+urbaned121@users.noreply.github.com>
Co-authored-by: Stephan Paternotte <Stephan-P@users.noreply.github.com>
Co-authored-by: Leonardo Santos Paulucio <leonardo.paulucio@hotmail.com>
Co-authored-by: hamza khalem <72972114+hamzakhalem@users.noreply.github.com>
Co-authored-by: IT Creativity + Art Team <admin@it-playground.net>
Co-authored-by: Reece Browne <74901996+reecebrowne@users.noreply.github.com>
Co-authored-by: James Brunton <jbrunton96@gmail.com>
Co-authored-by: Victor Villarreal <133383186+vvillarreal-cfee@users.noreply.github.com>
## Summary
- introduce a shared line art conversion interface and proprietary
ImageMagick-backed implementation
- have the compress controller optionally autowire the enterprise
service before running per-image line art processing
- remove ImageMagick command details from core by delegating conversions
through the proprietary service
## Testing
- not run (not requested)
------
[Codex
Task](https://chatgpt.com/codex/tasks/task_b_6928aecceaf083289a9269b1ca99307e)
---------
Co-authored-by: James Brunton <jbrunton96@gmail.com>
## Summary
- add a `PdfJsonConversionService` that serializes PDF text, fonts, and
metadata to JSON and rebuilds a PDF from the same structure
- expose REST endpoints for `/pdf/json` and `/json/pdf` conversions
using the existing convert API infrastructure
- define JSON model classes capturing document metadata, font
information, and positioned text elements
## Testing
- `./gradlew spotlessApply` *(fails: plugin
org.springframework.boot:3.5.4 unavailable in build environment)*
- `./gradlew build` *(fails: plugin org.springframework.boot:3.5.4
unavailable in build environment)*
------
https://chatgpt.com/codex/tasks/task_b_68f8e98d94ac8328a0e499e541528b6f
---------
Co-authored-by: EthanHealy01 <ethan.healy.21@gmail.com>
