Markitdown
ImCa0/just-laws
Convert files and office documents to Markdown. An agent skill from ImCa0/just-laws.
Agent skill
HTML Template Authoring
by Portwood-Global-Solutions in Portwood-Global-Solutions/Portwood
Author or repair a Portwood HTML template that renders correctly through Blob.toPdf (Flying Saucer).
Install HTML Template Authoring
$ npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Portwood-Global-Solutions/Portwood html-template-authoring --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Portwood-Global-Solutions/Portwood.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/html-template-authoring .claude/skills/html-template-authoring && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "html-template-authoring" agent skill from https://github.com/Portwood-Global-Solutions/Portwood/tree/main/.claude/skills/html-template-authoring into .claude/skills/html-template-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-template-authoring", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Portwood-Global-Solutions/Portwood/tree/main/.claude/skills/html-template-authoringType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Portwood-Global-Solutions/Portwood html-template-authoring --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Portwood-Global-Solutions/Portwood.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/html-template-authoring .agents/skills/html-template-authoring && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "html-template-authoring" agent skill from https://github.com/Portwood-Global-Solutions/Portwood/tree/main/.claude/skills/html-template-authoring into .agents/skills/html-template-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-template-authoring", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Portwood-Global-Solutions/Portwood html-template-authoring --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Portwood-Global-Solutions/Portwood.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/html-template-authoring .cursor/skills/html-template-authoring && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "html-template-authoring" agent skill from https://github.com/Portwood-Global-Solutions/Portwood/tree/main/.claude/skills/html-template-authoring into .cursor/skills/html-template-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-template-authoring", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Portwood-Global-Solutions/Portwood.git --path .claude/skills/html-template-authoring--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Portwood-Global-Solutions/Portwood html-template-authoring --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Portwood-Global-Solutions/Portwood.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/html-template-authoring .gemini/skills/html-template-authoring && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "html-template-authoring" agent skill from https://github.com/Portwood-Global-Solutions/Portwood/tree/main/.claude/skills/html-template-authoring into .gemini/skills/html-template-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-template-authoring", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Portwood-Global-Solutions/Portwood html-template-authoringInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Portwood-Global-Solutions/Portwood.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/html-template-authoring .github/skills/html-template-authoring && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "html-template-authoring" agent skill from https://github.com/Portwood-Global-Solutions/Portwood/tree/main/.claude/skills/html-template-authoring into .github/skills/html-template-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-template-authoring", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Portwood-Global-Solutions/Portwood html-template-authoring --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Portwood-Global-Solutions/Portwood.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/html-template-authoring .opencode/skills/html-template-authoring && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "html-template-authoring" agent skill from https://github.com/Portwood-Global-Solutions/Portwood/tree/main/.claude/skills/html-template-authoring into .opencode/skills/html-template-authoring/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-template-authoring", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
html-template-authoring- GitHub stars
- 126
- Token cost
- ~1.6k tokens
- SKILL.md length
- 649 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Author or repair a Portwood HTML template that renders correctly through Blob.toPdf (Flying Saucer).
- Writing a new template
- SKILL.md covers The renderer is CSS 2.1, Images, Fonts and symbols and @page conflicts, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Converting a design to a template
What it does
HTML Template Authoring is an agent skill from Portwood-Global-Solutions/Portwood. Author or repair a Portwood HTML template that renders correctly through Blob.toPdf (Flying Saucer). Use when writing a new template, converting a design to a template, or fixing one whose PDF output doesn't match the source — collapsed layout, missing images, wrong fonts, broken charts.
Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Documents & Office, covering PDF. It works with Microsoft Word and Salesforce. The repository describes itself as: Free, native document generation for Salesforce. PDF, DOCX, XLSX, PPTX — merge tags, images, barcodes, QR codes, bulk generation, Flow actions. 100% Apex + LWC, zero external… The licence is Apache-2.0.
When your agent uses it
- Writing a new template
- Converting a design to a template
- Fixing one whose PDF output doesnt match the source — collapsed layout
Example prompts
- “/html-template-authoring”
What it can do on your machine
Read from SKILL.md and the folder at commit 70ede0c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are css and html).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
HTML Template Authoring loads about 1.6k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 649 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Portwood-Global-Solutions/Portwood at commit 70ede0c, republished under its Apache-2.0 licence (© Portwood-Global-Solutions). 649 words, ~1,586 tokens.
Download SKILL.mdSave it as
.claude/skills/html-template-authoring/SKILL.md (or your agent's skills folder).- name
- html-template-authoring
- description
- Author or repair a Portwood HTML template that renders correctly through Blob.toPdf (Flying Saucer). Use when writing a new template, converting a design to a template, or fixing one whose PDF output doesn't match the source — collapsed layout, missing images, wrong fonts, broken charts.
Authoring HTML templates for Portwood
HTML is the recommended source format. It skips the DOCX→HTML parse and lands more reliably in the renderer. Steer new authors here, and chart authors here without exception.
The renderer is CSS 2.1
Blob.toPdf is Flying Saucer: CSS 2.1 plus a small CSS 3 subset. Unsupported
properties are silently ignored — the page still renders, but layout collapses to
default block flow. Nothing warns you.
Never use
display: flex,display: grid,gaplinear-gradient(...)and friendscalc(...)- CSS custom properties (
var(--x)) - most CSS 3 layout
Use instead
<table>-based layout for anything multi-column- solid background colors
- absolute lengths (
pt,in) and percentages display: table-cell/table-rowon<div>where you need cell behavior without a real table
The tbody trap
table > tbody > tr > td { ... } /* silently matches NOTHING */The parse tree has no implied <tbody>. Use td attribute selectors or class-only
selectors:
td.total { ... }Images
URLs must be relative. Absolute https://… URLs and data: URIs both render
broken — this is a hard constraint of the renderer, not a bug to work around.
If the same image appears at two different sizes, the renderer caches one layout size per URL. Vary the URL to force a re-layout (the engine appends a size key for this reason).
Fonts and symbols
The base font families resolve to the base-14 PDF fonts (Helvetica / Times / Courier, WinAnsi). Anything outside Latin-1 renders as nothing — not a box, not a fallback, absent. Checkmarks, arrows, CJK, Greek, Cyrillic all disappear.
'Arial Unicode MS' is the one family that draws them, embedding as a subsetted CID
font. The trade-off is real and worth knowing:
| Symbols / CJK | Bold | |
|---|---|---|
'Arial Unicode MS' | ✅ | ❌ — no bold face; font-weight: bold renders regular |
| every other family | ❌ | ✅ |
So a symbol-heavy document gives up bold. Build hierarchy from size, colour and fill bands instead — reversed white-on-dark headers, tinted totals rows, a solid band behind the key number.
Embedding costs roughly 1.5KB → 70KB per page that uses it, and only for the glyphs used.
@page conflicts
The engine builds a <style> from the template's Page_Size__c, Page_Orientation__c
and Custom_Margins__c fields. If your source HTML also declares @page, the engine
defers to your source — you do not need to clear the template's page fields.
Charts
Charts are not HTML-only — Word, PowerPoint and Excel get a rasterized PNG from
DocGenChartRasterizer, and in fact support more chart shapes than HTML→PDF does.
What varies is which style survives which output.
| Style | Word / PPTX / XLSX | HTML → PDF | HTML in a browser |
|---|---|---|---|
bar | ✅ PNG | ✅ CSS-bar | ✅ |
pivot | ❌ | ✅ CSS table | ✅ |
clustered, stacked | ✅ PNG | ✅ CSS table | ✅ |
column, pie, donut, line, area | ✅ PNG | ❌ | ✅ with htmlRender=svg |
Show full SKILL.md (232 more words)Show less
The two rules behind that table
Flying Saucer drops inline <svg> from Blob.toPdf. The htmlRender=svg modifier
routes through DocGenSvgChartSerializer and looks perfect in a browser, then vanishes
in the PDF. If your HTML template is destined for PDF, stay on the default CSS-bar
styles: bar, pivot, clustered, stacked.
pivot never rasterizes. It isn't in the rasterizer's KNOWN_STYLES because a
cross-tab is a table, not a chart shape. Cross-tab belongs in HTML.
So: rich chart shapes in a PDF → author the template in Word and let the PNG pipeline handle it. Cross-tab pivots → HTML.
The pivot layout gotcha
HTML container auto-expansion looks for the nearest open <tr> when processing nested
{#…} loops. Putting {#cols} directly inside a <tr> makes each column duplicate
the whole row.
<!-- WRONG — every column repeats the entire row -->
<tr>
{#cols}
<td>{key}</td>
{/cols}
</tr>
<!-- RIGHT — div + table-row, CSS 2.1 safe -->
<div class="row" style="display: table-row">
{#cols}
<div style="display: table-cell">{key}</div>
{/cols}
</div>Reference templates
| File | What it shows |
|---|---|
docs/SurveyChartExample.html | Canonical chart template — single-dimension per question + cross-tab spread |
docs/CommuteSurveyExample.html | Pivot + filter + multi-select + colSort composed together |
docs/ChartEngineShowcase.html | The full style gallery |
Large tables
For giant-query templates, repeating headers on every PDF page come from Flying
Saucer's -fs-table-paginate: paginate plus thead { display: table-header-group; }.
Be aware this mis-paginates some real-world templates dramatically — verify page
count on a full render before relying on it.
Before you ship a template
- Grep your own CSS:
grep -nE "flex|grid|gap:|gradient|calc\(|var\(--" template.html - Confirm every
<img src>is relative - If it has symbols, confirm the font is
'Arial Unicode MS'and you haven't relied on bold - Render it and count the pages
© Portwood-Global-Solutions, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/html-template-authoring of Portwood-Global-Solutions/Portwood.
Open the folder on GitHubat commit 70ede0c
Compare with similar skills
HTML Template Authoring next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| HTML Template Authoring this skillPortwood-Global-Solutions/Portwood | 126 | — | ~1.6k | Automated safety check: Pass | Apache-2.0 | |
| MarkitdownImCa0/just-laws | 781 | 14 repos | ~3.2k | Automated safety check: Notes | MIT | |
| Gzh Designisjiamu/gzh-design-skill | 4k | — | ~2.2k | Automated safety check: Pass | AGPL-3.0 | |
| GenOffice Document CLIgenspark-ai/genoffice | 9.2k | — | ~19k | Automated safety check: Pass | Apache-2.0 | |
| Translate Bookdeusyu/translate-book | 2.1k | — | ~5.5k | Automated safety check: Notes | MIT | |
| Docsagentdocsagent/docsagent | 625 | — | ~834 | Automated safety check: Pass | None |
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Triage Report
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Decide whether a Portwood bug report is a real code defect or a template-authoring problem, before any code is written.
Fix Merge Tag
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Managed Package Rules
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Related
Works with
Categories
Questions about HTML Template Authoring
What does HTML Template Authoring do?
Author or repair a Portwood HTML template that renders correctly through Blob.toPdf (Flying Saucer). HTML Template Authoring is an agent skill from Portwood-Global-Solutions/Portwood.toPdf (Flying Saucer).
When should I use HTML Template Authoring?
HTML Template Authoring fits situations like: writing a new template; converting a design to a template; fixing one whose PDF output doesnt match the source — collapsed layout.
How do I install HTML Template Authoring in Claude Code?
Run `npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a claude-code`. Or copy the skill folder (.claude/skills/html-template-authoring in Portwood-Global-Solutions/Portwood) into .claude/skills/html-template-authoring in your project. Claude Code loads it when a task matches its description.
How do I install HTML Template Authoring in Codex?
Run `npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a codex`. Or copy the skill folder (.claude/skills/html-template-authoring in Portwood-Global-Solutions/Portwood) into .agents/skills/html-template-authoring in your project. Codex loads it when a task matches its description.
Can I use HTML Template Authoring in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Portwood-Global-Solutions/Portwood --skill html-template-authoring -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/html-template-authoring, .gemini/skills/html-template-authoring, .github/skills/html-template-authoring and .opencode/skills/html-template-authoring in your project.
What does HTML Template Authoring need to run?
SKILL.md names no scripts, command-line tools or credentials: HTML Template Authoring is instructions for the agent only.
Does HTML Template Authoring access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is HTML Template Authoring safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does HTML Template Authoring use?
HTML Template Authoring is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does HTML Template Authoring use?
About 1.6k tokens (SKILL.md is roughly 6.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to HTML Template Authoring?
Skills that share tags, products or a category with HTML Template Authoring: Markitdown (ImCa0/just-laws, 781 stars), Gzh Design (isjiamu/gzh-design-skill, 4k stars), GenOffice Document CLI (genspark-ai/genoffice, 9.2k stars) and Translate Book (deusyu/translate-book, 2.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains HTML Template Authoring?
Portwood-Global-Solutions (a GitHub organization) maintains it in Portwood-Global-Solutions/Portwood, which has 126 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 9, 2026.
Source: Portwood-Global-Solutions/Portwood on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.