How do I convert a document to PDF?

Drag your file onto the upload area (or click to browse), pick a mode such as Standard or High Quality, optionally choose a page size and margins, then press “Convert to PDF”. The PDF is generated in your browser and a Download button appears. You can add many files at once and convert them as a batch.

Is this PDF converter free?

Yes. Converting documents to PDF here is completely free with no sign-up, no watermark and no daily file limit. The tool is funded by unobtrusive ads and an optional developer API, but the browser conversion is free forever.

Are my documents uploaded to a server?

No. Conversion runs 100% in your browser. Your file is read locally, converted to a PDF on your own device, and offered back as a download. Nothing is transmitted to us or any third party, which makes it private and GDPR-friendly by design.

How do I convert Word to PDF?

Add your .docx file and click Convert. The Word document is parsed (headings, paragraphs, lists, tables, bold/italic and images) and rendered into a clean PDF in your browser. For the most faithful layout, use the High Quality mode.

How do I convert DOCX to PDF for free?

Open this converter, drop the .docx file in, keep the Standard preset or pick a page size, and press Convert to PDF. The DOCX is converted locally and downloaded as a PDF — no account, no payment and no watermark.

How do I convert Excel (XLSX) to PDF?

Upload your .xlsx, .xls or .ods spreadsheet. Each sheet is read with the SheetJS engine and laid out as a formatted table in the PDF, one section per sheet. Use Landscape orientation and Tabloid/A3 page size for wide spreadsheets.

How do I convert a text file (TXT) to PDF?

Drop your .txt or .log file in and convert. The text is paginated into a clean PDF with your chosen page size, margins and font. It is ideal for turning notes, logs and exports into a shareable document.

How do I convert Markdown (MD) to PDF?

Add a .md or .markdown file. Headings, lists, bold/italic, links, blockquotes and fenced code blocks are parsed and rendered into a styled PDF. Great for turning README files and notes into polished documents.

How do I convert HTML to PDF?

Upload an .html or .htm file and convert. The DOM is walked for headings, paragraphs, lists, tables, images and inline styles, then rendered to PDF in your browser. Note that external CSS and scripts are not executed — content and basic structure are preserved.

How do I convert CSV to PDF?

Add a .csv or .tsv file. Rows are parsed (including quoted fields) and drawn as a bordered table with a header row. For wide data, choose Landscape orientation so all columns fit on the page.

How do I convert JSON or XML to PDF?

Upload a .json or .xml file. The content is pretty-printed and rendered as a monospaced, line-wrapped code block in the PDF — perfect for sharing API responses, configs or data exports as a readable document.

How do I convert an image (JPG/PNG) to PDF?

Drop a JPG, PNG, WEBP, GIF or BMP file in. The image is placed on a page (downscaled and recompressed to your chosen DPI/quality) and exported as a PDF. Add several images to create a multi-page PDF or merge them into one document.

PDF (Portable Document Format) is a file format created by Adobe that captures a document’s text, fonts, images and layout so it displays identically on any device, operating system or printer. It is the universal standard for sharing finished documents.

Why should I convert documents to PDF?

PDF gives you universal compatibility (it opens everywhere), consistent formatting (it looks the same for every reader), easy and secure sharing, print-ready output and excellent long-term archiving. Converting a Word or Excel file to PDF means the recipient sees exactly what you intended.

Will the PDF look exactly like my Word document?

The converter preserves structure — headings, paragraphs, lists, tables, bold/italic and images — and produces a clean, readable PDF. Because it re-renders the content rather than embedding Word’s exact engine, very complex layouts (multi-column, text boxes, advanced styles) are simplified. For typical documents the result is faithful and professional.

Is there a file-size limit?

Because conversion happens in your browser, the practical limit is your device’s memory rather than an artificial server cap. Most documents — including large spreadsheets and image-heavy files — convert comfortably. Very large files are slower on phones; use a desktop for the best speed.

Can I convert multiple documents at once?

Yes. Add as many files as you like and the batch queue converts them one after another, each with its own progress and downloadable PDF. You can then download every PDF individually, grab them all as a ZIP, or merge them into a single combined PDF.

Can I merge several documents into one PDF?

Yes. Add two or more files and click “Merge into 1 PDF”. Each document is converted and combined, in order, into a single PDF that downloads automatically — ideal for assembling a report from multiple sources.

Does the converter add a watermark?

No. The output PDF is exactly what your settings produce, with nothing added — unless you deliberately add your own watermark text using the watermark option.

Can I add a watermark to the PDF?

Yes. Open Advanced settings and type your watermark text (for example “CONFIDENTIAL” or “DRAFT”). It is drawn diagonally across every page at low opacity. You can also add header text, footer text, page numbers and a date.

Can I add page numbers, headers and footers?

Yes. In Advanced settings you can toggle page numbers, add header and footer text, and stamp the current date. These are drawn on every page of the generated PDF.

Can I choose the page size?

Yes. Choose A4, A3, A5, US Letter, Legal, Tabloid, a custom size in millimetres, or “Fit to content”. The page size, orientation and margins all map to real PDF geometry.

Can I set the orientation and margins?

Yes. Pick Portrait or Landscape (or Auto), and choose None, Narrow, Normal, Wide or a custom margin. Landscape with wide pages is best for spreadsheets and tables.

Which fonts does the converter use?

It embeds standard PDF fonts — Helvetica (sans-serif), Times (serif) and Courier (monospace) — which are supported everywhere and keep files small. Characters outside the Latin set are mapped to their closest equivalents; for documents in non-Latin scripts the visible text may be simplified.

Does it support Unicode and other languages?

The standard PDF fonts cover Latin-based languages (English and most European languages) fully. Common typographic characters (smart quotes, dashes, bullets) are handled. Right-to-left scripts and complex non-Latin alphabets are simplified because the built-in fonts are Latin-based.

How long does conversion take?

Most documents convert in a second or two. Large spreadsheets, long Word files and high-resolution images take a little longer because the work happens on your device. A live progress bar shows the current stage.

Does it work offline?

After the page has loaded once, conversion runs entirely on your device and does not need an active connection to process your file. The conversion libraries are cached by your browser after the first visit.

Is converting documents to PDF secure?

It is one of the most secure ways to make a PDF online because your file never leaves your computer. Cloud converters upload your document to a server you do not control; here the file stays in your browser’s memory and is discarded when you close the tab.

Do you store or keep my files?

No. There is nothing to store on our side because your files never leave your device. The original and the generated PDF live only in your browser and are released when you close or refresh the tab.

What is the best PDF setting for printing?

Use the Print Ready mode, which keeps images at up to 300 DPI and high quality, with a standard page size (A4 or Letter) and normal margins. This produces a crisp, professional file suitable for a print shop.

What is the best PDF setting for sharing online?

Use Standard or the Web & Sharing preset: a compact A4 page, balanced image quality and a small file size that opens quickly and emails easily.

What is the best PDF setting for archiving?

Use the Archive preset (High Quality with embedded metadata). It keeps images sharp and records the title, author and dates so the document is easy to identify years later.

Can I add document metadata (title, author, keywords)?

Yes. In Advanced settings you can set the PDF title, author, subject and keywords. These are written into the PDF’s metadata so search and document-management systems can index the file correctly.

Can I remove metadata from the PDF?

Yes. Toggle “Strip metadata” to produce a PDF without author, producer or date fields — useful when you want to share a document without revealing who created it or when.

Can I reduce the PDF file size?

Yes. Use the Fast mode (lower image DPI and quality) and convert images at a lower DPI. Image-heavy documents shrink the most because pictures are downscaled and recompressed during conversion.

Does converting reduce quality?

Text and tables are vector-rendered, so they stay crisp at any zoom. Images may be downscaled and recompressed according to your chosen mode — High Quality and Print Ready keep them sharp, while Fast trades some image quality for a smaller file.

How does this compare to Adobe Acrobat, Smallpdf or iLovePDF?

Those tools are powerful but most online ones upload your file to a server, and Acrobat is paid desktop software. This converter does the work locally in your browser — private, free, no upload wait and no watermark — covering the most common document, spreadsheet, text and image to PDF conversions.

How does this compare to CloudConvert or Convertio?

CloudConvert and Convertio upload your document to their servers, queue it, convert it remotely and send it back, with free-tier file and size limits. This converter runs entirely on your device, so there is no upload, no queue, no per-file cap and no watermark.

Can I convert documents to PDF on a Mac, Windows or Linux?

Yes. Because it runs in the browser, the converter works identically on Windows, macOS, Linux and ChromeOS, and on mobile. Any modern browser (Chrome, Edge, Firefox, Safari) can produce a PDF.

Does it work on phones and tablets?

Yes. The converter runs in modern mobile browsers on Android and iOS. Large or image-heavy conversions are slower on phones because they have less memory and processing power.

What browsers are supported?

Any modern browser works, including Google Chrome, Microsoft Edge, Mozilla Firefox, Safari, Brave and Opera, on desktop and mobile.

Is converting documents to PDF legal?

Yes. Converting documents you own or have the right to use is completely legal. The tool is intended for your own files and properly licensed content.

Can I convert RTF to PDF?

Yes. Add a .rtf file and convert. The text content is extracted and rendered into a PDF; complex RTF styling is simplified to clean, readable text.

Can I convert ODS (OpenDocument Spreadsheet) to PDF?

Yes. ODS files are read by the SheetJS engine just like XLSX, and each sheet is rendered as a table in the PDF.

Why is my converted PDF larger than the original?

This usually happens when the source was a tiny text or compressed file and the PDF adds page structure and embedded fonts/images. To keep the PDF small, use Fast mode, lower the image DPI, and avoid very large images.

Why is the spreadsheet cut off on the page?

Wide spreadsheets need more horizontal room. Switch the orientation to Landscape and choose a larger page size such as A3 or Tabloid. Columns are sized proportionally to fit the page width.

Can I convert just part of a document?

The converter processes the whole document. To convert a portion, copy the section you need into a new TXT, Markdown or DOCX file and convert that.

Does it preserve tables from Word and Excel?

Yes. Tables from DOCX, HTML, CSV and spreadsheets are rendered as real bordered tables in the PDF, with the header row shaded and repeated at the top of each new page.

Does it preserve images inside my Word document?

Images embedded in a DOCX (as base64) are placed into the PDF. They are downscaled and recompressed according to your selected quality mode to keep the file efficient.

Can I change the font of the PDF?

Yes. Choose Helvetica (sans-serif), Times (serif) or Courier (monospace), and pick a body font size. The selected font is embedded into the PDF.

Document to PDF Converter Free Online – Convert DOCX, TXT, XLSX, PPTX to PDF

Why this is the best free Document to PDF converter

100% Private

Conversion runs in your browser with pdf-lib. Your documents never leave your device.

Instant & Free

No upload wait, no sign-up, no watermark — processing starts the moment you hit convert.

20+ Input Formats

Word, Excel, text, Markdown, HTML, CSV, JSON, XML and images all convert to PDF.

Full Page Control

Choose page size, orientation, margins, font and quality — or use a one-click preset.

Batch & Merge

Convert dozens of files at once, download a ZIP, or merge everything into one PDF.

Watermark & Stamps

Add watermark text, headers, footers, page numbers and a date to every page.

Smart Analysis

See word count, page estimate, author, dates and language before you convert.

Searchable PDFs

Output is real, selectable text with embedded fonts and full metadata.

What Is a PDF?

PDF (Portable Document Format) is a file format, created by Adobe in 1993 and now an open ISO standard, that captures the complete appearance of a document — its text, fonts, images, vector graphics and exact layout — in a single, self-contained file. A PDF looks identical on every device, operating system and printer, which is why it has become the universal format for finished documents.

Unlike an editable Word or Excel file, a PDF is designed to be a faithful, fixed representation of a document. That makes it the best format for sharing, printing, signing and archiving — the recipient always sees exactly what you intended, with no missing fonts, shifted layouts or version mismatches.

Universal compatibilityOpens on every device and in every browser without special software.

Consistent formattingLooks the same for everyone — fonts and layout are embedded.

Print-readyDesigned for accurate, high-quality printing at any size.

Long-term archivingSelf-contained and stable, ideal for records you keep for years.

Why Convert Documents to PDF?

Converting a Word, Excel, text or image file to PDF solves the most common document headaches: broken formatting when a file opens on a different computer, missing fonts, accidental edits, and incompatibility with the recipient’s software. A PDF is a sealed, portable snapshot that just works.

Whether you are emailing a contract, submitting an assignment, publishing a report, preparing a file for print, or archiving records for the long term, PDF is the safest, most professional choice. This converter makes it instant and private — the conversion happens in your browser, so sensitive documents never leave your device.

Universal compatibilityOne file that opens for everyone, everywhere.

Consistent formattingYour layout is preserved exactly as you designed it.

Secure sharingSend a finished, tamper-resistant document — privately, with no upload.

Print-ready outputHigh-DPI modes produce files a print shop can use directly.

Long-term archivingEmbedded fonts and metadata keep the file readable for years.

Best PDF Settings for Every Goal

The right settings depend on what you are doing with the PDF. As a rule of thumb: pick a faster mode for sharing and email, a higher-quality mode for printing and archiving, and match the page size and orientation to your content.

PrintingPrint Ready mode, A4 or Letter, normal margins, images up to 300 DPI for a crisp print-shop file.

Sharing & webStandard mode, A4, balanced image quality — small and quick to open or email.

ArchivingHigh Quality with title/author/keywords metadata so the file stays identifiable for years.

Web publishingStandard mode with a compact page; add page numbers and a header for a polished look.

Business documentsTimes font, A4, page numbers on — a clean, formal report style.

How In-Browser Document Conversion Works

When you add a file, the converter reads it locally and turns it into a normalised document model: DOCX is parsed with the Mammoth engine, spreadsheets with SheetJS, and text, Markdown, HTML, CSV, JSON and XML with purpose-built parsers. Images are decoded directly.

That model — headings, paragraphs, lists, tables and images — is then laid out and paginated into a real PDF using pdf-lib, with your chosen page size, margins, fonts, watermark, headers, page numbers and metadata. Everything runs in a WebAssembly-accelerated browser sandbox, so the conversion is fast, private and requires no upload or installed software.

Convert documents to PDF in 3 steps

Upload your document

Drag and drop your DOCX, XLSX, TXT, Markdown, HTML, CSV or image file onto the converter, or click to browse. Add multiple files for batch conversion.

Choose PDF settings

Pick a mode (Fast, Standard, High Quality, Print Ready) and optionally set the page size, orientation, margins, font and watermark.

Convert and download

Press Convert to generate the PDF in your browser, then download it individually, as a ZIP, or merged into one document.

Supported Document Formats

Convert any of these formats to PDF — drag in a single file or a whole batch.

DOCXPDF

DOCPDF

TXTPDF

RTFPDF

MDPDF

HTMLPDF

CSVPDF

XLSXPDF

XLSPDF

ODSPDF

PPTXPDF

JSONPDF

XMLPDF

EPUBPDF

JPGPDF

PNGPDF

ODTPDF

PagesPDF

NumbersPDF

KeynotePDF

Supported Formats & Conversion Engines

Most formats convert instantly and privately in your browser. A few office and eBook formats use our server-side engine and API for full-fidelity layout.

Format	Type	Engine	How it’s handled	In-browser
DOCX	Word	Mammoth + pdf-lib	Headings, lists, tables, bold/italic, images	Yes
TXT / LOG	Text	pdf-lib	Paginated plain text	Yes
Markdown	Markup	pdf-lib	Headings, lists, code, links	Yes
HTML	Markup	pdf-lib	Structure + inline styles (no external CSS/JS)	Yes
CSV / TSV	Data	pdf-lib	Bordered tables with header row	Yes
XLSX / XLS / ODS	Spreadsheet	SheetJS + pdf-lib	One table section per sheet	Yes
JSON / XML	Data	pdf-lib	Pretty-printed code blocks	Yes
RTF	Rich text	pdf-lib	Text extracted, styling simplified	Yes
JPG / PNG / WEBP / GIF / BMP	Image	pdf-lib	Downscaled + recompressed to PDF pages	Yes
DOC / PPT / PPTX / ODT / ODP / EPUB	Office / eBook	LibreOffice (API)	Full-fidelity via server engine & API	API
Pages / Numbers / Keynote	Apple	Export → API	Export to PDF/DOCX/XLSX first, or use the API	API

Best PDF Settings for Every Goal

Printing

Crisp output for a print shop or office printer.

Print Ready · A4/Letter · normal margins · 300 DPI images

Sharing & email

Small, fast-opening file for sending around.

Standard · A4 · balanced quality · 120 DPI images

Archiving

Long-life file that stays identifiable.

High Quality · A4 · title/author/keywords metadata

Business report

Clean, formal document style.

High Quality · Times font · A4 · page numbers on

Document to PDF Use Cases

Business reports

Turn Word and Excel files into polished, fixed-layout PDFs for clients and stakeholders.

Assignments & theses

Submit coursework as a PDF so formatting never breaks on the reviewer’s computer.

Invoices & receipts

Convert spreadsheets or images of receipts into clean, archivable PDFs.

Contracts & legal

Share tamper-resistant, print-ready documents that look identical for every party.

Scans & photos

Combine multiple images into a single multi-page PDF for records and submissions.

Docs & code

Render README files, logs, JSON and source code into readable, shareable PDFs.

Privacy First: No Upload, No Tracking

Unlike cloud converters that send your file to a remote server, this tool processes everything locally. Your documents stay yours.

No upload requiredYour document is never sent anywhere — there is no upload step at all.

Files stay on your deviceThe original and the PDF live only in your browser, never on a server.

Browser-based processingAll conversion happens locally using your device’s own processor.

Open-source enginesReal pdf-lib, Mammoth and SheetJS run the conversion right inside the page.

No account requiredNo sign-up, no email, no login — just open the page and convert.

No file retentionNothing is stored or logged; files are released when you close the tab.

How Document to PDF Conversion Works

How does the converter turn a Word file into a PDF?

It uses the Mammoth library to read the DOCX and convert it to clean HTML (headings, paragraphs, lists, tables, bold/italic and embedded images). That structure is normalised into a document model and laid out page by page with pdf-lib, which embeds the fonts and writes a standard PDF — all in your browser.

How are spreadsheets converted?

SheetJS parses XLSX, XLS and ODS files into rows and columns. Each sheet becomes a section in the PDF, rendered as a bordered table with a shaded header that repeats at the top of every page. Column widths are sized proportionally to fit the page.

Why is in-browser conversion private and safe?

Your document never travels across the internet, is never stored on a third-party server and is never exposed to that server’s staff, logs or breaches. The only copy of your file is the one on your own device — the strongest possible privacy guarantee for confidential documents.

What are the limits of client-side conversion?

Browser conversion is fast, private and free, and handles the most common formats beautifully. Pixel-perfect reproduction of complex office layouts (advanced PowerPoint, ODT/Pages, multi-column DTP) and certified PDF/A or OCR are best handled by our server-side LibreOffice engine and API, which complement the browser tool.

15 Pro Tips for Converting Documents to PDF

1Match the page size to your contentA4/Letter for documents, A3/Tabloid + Landscape for wide spreadsheets and tables.

2Use Landscape for spreadsheetsWide Excel/CSV data fits far better in landscape — fewer cut-off columns.

3High Quality for print, Fast for emailPrint Ready keeps images at 300 DPI; Fast shrinks them for small, emailable files.

4Add page numbers to long reportsToggle page numbers (and a header) so multi-page documents stay easy to navigate.

5Stamp drafts with a watermarkA diagonal “DRAFT” or “CONFIDENTIAL” watermark makes the document’s status unmistakable.

6Set the title and author metadataFilling in the PDF title/author helps search and document systems index the file.

7Merge instead of attaching many filesCombine several documents into one PDF so recipients get a single, ordered file.

8Lower image DPI to shrink the fileFor image-heavy documents, dropping to 120 DPI cuts the size dramatically with little visible loss.

9Convert a folder in one goUse the Folder button to add every supported file inside a directory and batch-convert.

10Keep your editable originalPDF is a finished format — keep the DOCX/XLSX for future edits and share the PDF.

11Use Times for formal documentsA serif font gives reports and letters a more traditional, professional look.

12Strip metadata before sharing externallyTurn on “Strip metadata” to remove author and date fields from a public file.

13Export tricky formats firstFor Pages/Keynote/PPT, export to DOCX/XLSX/PDF or images, then convert here.

14Use a desktop for big batchesLarge or many-file conversions run faster with more memory on a laptop or desktop.

15Preview before downloadingThe queue card shows a real first-page thumbnail of your generated PDF so you can check it.

Document to PDF API & Plans

The browser tool is free and unlimited. For automated, server-side or high-volume conversion — including PowerPoint, ODT, EPUB, PDF/A and OCR — our developer plans add a REST API, batch jobs, webhooks and team features.

Free

$0forever

Unlimited browser conversions
All modes & presets
Batch + merge + ZIP
No watermark, no sign-up

Use the free tool

Popular

Pro

$9/mo

REST API access
2,000 conversions / month
DOCX, XLSX, PPTX, ODT, EPUB
Async jobs + webhooks
Email support

View pricing

Business

$39/mo

25,000 conversions / month
PDF/A + OCR searchable PDF
API-key & team management
Priority processing
Priority support

View pricing

Enterprise

Customcontact us

Unlimited volume
Dedicated / on-prem engine
Digital signatures & compliance
SLA + SSO
Dedicated success manager

Contact sales

Frequently Asked Questions

A Document to PDF converter turns files such as Word (DOCX), Excel (XLSX), text, Markdown, HTML, CSV, JSON and images into the PDF (Portable Document Format). PDF preserves layout and looks identical on every device, which makes it the best format for sharing, printing and archiving. This converter runs entirely in your browser using pdf-lib, so your documents are never uploaded.

Troubleshooting Guide

Why this is the best free Document to PDF converter

100% Private

Conversion runs in your browser with pdf-lib. Your documents never leave your device.

Instant & Free

No upload wait, no sign-up, no watermark — processing starts the moment you hit convert.

20+ Input Formats

Word, Excel, text, Markdown, HTML, CSV, JSON, XML and images all convert to PDF.

Full Page Control

Choose page size, orientation, margins, font and quality — or use a one-click preset.

Batch & Merge

Convert dozens of files at once, download a ZIP, or merge everything into one PDF.

Watermark & Stamps

Add watermark text, headers, footers, page numbers and a date to every page.

Smart Analysis

See word count, page estimate, author, dates and language before you convert.

Searchable PDFs

Output is real, selectable text with embedded fonts and full metadata.

What Is a PDF?

Universal compatibilityOpens on every device and in every browser without special software.

Consistent formattingLooks the same for everyone — fonts and layout are embedded.

Print-readyDesigned for accurate, high-quality printing at any size.

Long-term archivingSelf-contained and stable, ideal for records you keep for years.

Why Convert Documents to PDF?

Universal compatibilityOne file that opens for everyone, everywhere.

Consistent formattingYour layout is preserved exactly as you designed it.

Secure sharingSend a finished, tamper-resistant document — privately, with no upload.

Print-ready outputHigh-DPI modes produce files a print shop can use directly.

Long-term archivingEmbedded fonts and metadata keep the file readable for years.

Best PDF Settings for Every Goal

PrintingPrint Ready mode, A4 or Letter, normal margins, images up to 300 DPI for a crisp print-shop file.

Sharing & webStandard mode, A4, balanced image quality — small and quick to open or email.

ArchivingHigh Quality with title/author/keywords metadata so the file stays identifiable for years.

Web publishingStandard mode with a compact page; add page numbers and a header for a polished look.

Business documentsTimes font, A4, page numbers on — a clean, formal report style.

How In-Browser Document Conversion Works

Convert documents to PDF in 3 steps

Upload your document

Drag and drop your DOCX, XLSX, TXT, Markdown, HTML, CSV or image file onto the converter, or click to browse. Add multiple files for batch conversion.

Choose PDF settings

Pick a mode (Fast, Standard, High Quality, Print Ready) and optionally set the page size, orientation, margins, font and watermark.

Convert and download

Press Convert to generate the PDF in your browser, then download it individually, as a ZIP, or merged into one document.

Supported Document Formats

Convert any of these formats to PDF — drag in a single file or a whole batch.

DOCXPDF

DOCPDF

TXTPDF

RTFPDF

MDPDF

HTMLPDF

CSVPDF

XLSXPDF

XLSPDF

ODSPDF

PPTXPDF

JSONPDF

XMLPDF

EPUBPDF

JPGPDF

PNGPDF

ODTPDF

PagesPDF

NumbersPDF

KeynotePDF

Supported Formats & Conversion Engines

Most formats convert instantly and privately in your browser. A few office and eBook formats use our server-side engine and API for full-fidelity layout.

Format	Type	Engine	How it’s handled	In-browser
DOCX	Word	Mammoth + pdf-lib	Headings, lists, tables, bold/italic, images	Yes
TXT / LOG	Text	pdf-lib	Paginated plain text	Yes
Markdown	Markup	pdf-lib	Headings, lists, code, links	Yes
HTML	Markup	pdf-lib	Structure + inline styles (no external CSS/JS)	Yes
CSV / TSV	Data	pdf-lib	Bordered tables with header row	Yes
XLSX / XLS / ODS	Spreadsheet	SheetJS + pdf-lib	One table section per sheet	Yes
JSON / XML	Data	pdf-lib	Pretty-printed code blocks	Yes
RTF	Rich text	pdf-lib	Text extracted, styling simplified	Yes
JPG / PNG / WEBP / GIF / BMP	Image	pdf-lib	Downscaled + recompressed to PDF pages	Yes
DOC / PPT / PPTX / ODT / ODP / EPUB	Office / eBook	LibreOffice (API)	Full-fidelity via server engine & API	API
Pages / Numbers / Keynote	Apple	Export → API	Export to PDF/DOCX/XLSX first, or use the API	API