Free file to PDF · Browser only · No upload
Convert files to PDF in your browser.
Poster Poster PDF Converter is a free in-browser file → PDF converter. Merge images, Word docs, text, and HTML into one PDF. No upload, no signup, no watermark.
Drop in images, Word docs, plain text, or HTML. Pick a page size. Get one merged PDF back. Nothing uploads — it all happens on your device.
Drop files here or click to choose
Images (PNG, JPG, WebP) · Text (.txt, .md) · Word (.docx) · HTML
Often used together
All four tools are free, browser-only, no signup required.
Smaller PDFs
Compress source images before merging — the final PDF drops in size dramatically.
🖼️Resize source images first
Each image becomes one PDF page. Resize beforehand for predictable, consistent page dimensions.
🎨Make a cover design
Build a hero image as the front page of your PDF. Designs flatten cleanly into PDFs.
Why does the conversion happen in your browser?
Most online PDF converters upload your file to a server, run the conversion there, and hand the PDF back as a download. That works fine for a holiday photo, but the privacy story is murky if the file is anything sensitive — a contract, a payslip, a CV. Your file lives on someone else's server until they decide to delete it (or don't).
This tool runs entirely in your browser. Your files are read into memory locally, the PDF is built locally, and the result is handed back to you as a download. Nothing leaves your device. Nothing goes to us. It works offline once the page has loaded.
Which file types can you convert?
- Images — PNG, JPG, JPEG, WebP. Each image becomes one page, fit to the chosen paper size with a small margin.
- Plain text — .txt files render as wrapped text across as many pages as needed.
- Markdown — .md and .markdown files convert as plain text in v1. Header and bold rendering coming in a future update.
- Word documents — .docx files render as one image-page per document via mammoth.js. Basic formatting is preserved (headings, bold, lists, paragraphs).
- HTML files — .html and .htm get rendered to canvas and embedded as a page. Useful for saving a snapshot of an email export or a styled receipt.
HEIC photos (iPhone's default format) aren't yet supported. The cleanest workaround is to open the photo in macOS Preview or iOS Photos and export it as JPEG first, then drop the JPEG in here.
Common things people use this for
- Receipts and expense reports — drop in five receipt photos, get one PDF for your accountant.
- Contract proofs — combine a signed page and a cover letter into a single deliverable.
- Set lists and lyric sheets — text files for every song, merged into one printable pack.
- Application packs — CV (.docx) plus references (.txt) plus portfolio screenshots (.png) into one PDF.
- Email-friendly attachments — most email providers cap attachments at 25MB. Merging into one compressed PDF often slips under the limit.
Why no signup and no watermark?
File-format conversion is one of those operations that should just work without an account. PDF generation is a solved problem in 2026 — the libraries that do it are open source and run in any modern browser without server compute. There's no real cost to host this tool, so there's no reason to gate it behind email capture or a paywall.
The free tier of most online PDF tools either watermarks the output, caps the file count, or routes you through ad-heavy landing pages with three retries. None of that here. Use it as often as you need.
Doing this every week from the same calendar?
If you're generating the same kind of PDF every week — a weekly menu, a class timetable, a gig roster — the underlying problem is recurrence, not the conversion itself. Poster Poster generates branded weekly content automatically from your Google Calendar and posts it across your social platforms. The free converter stays free; Poster Poster takes over when the file generation is one step in a recurring workflow you'd rather not run by hand.